Merge commit 'upstream/0.9.3'

94 files changed, 3638 insertions, 842 deletions

diff --git a/gnulib-m4/00gnulib.m4 b/gnulib-m4/00gnulib.m4
index d4d04d15..301469b3 100644
--- a/gnulib-m4/00gnulib.m4
+++ b/gnulib-m4/00gnulib.m4
@@ -1,5 +1,5 @@
 # 00gnulib.m4 serial 2
-dnl Copyright (C) 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/alloca.m4 b/gnulib-m4/alloca.m4
index 4b978e13..f3ee3438 100644
--- a/gnulib-m4/alloca.m4
+++ b/gnulib-m4/alloca.m4
@@ -1,5 +1,6 @@
 # alloca.m4 serial 9
-dnl Copyright (C) 2002-2004, 2006, 2007, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2006-2007, 2009-2010 Free Software Foundation,
+dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/codeset.m4 b/gnulib-m4/codeset.m4
index 413217bd..a53c0426 100644
--- a/gnulib-m4/codeset.m4
+++ b/gnulib-m4/codeset.m4
@@ -1,5 +1,5 @@
 # codeset.m4 serial 4 (gettext-0.18)
-dnl Copyright (C) 2000-2002, 2006, 2008, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2000-2002, 2006, 2008-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/dup2.m4 b/gnulib-m4/dup2.m4
deleted file mode 100644
index 2abc74cd..00000000
--- a/gnulib-m4/dup2.m4
+++ /dev/null
@@ -1,35 +0,0 @@
-#serial 6
-dnl Copyright (C) 2002, 2005, 2007, 2009 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
-AC_DEFUN([gl_FUNC_DUP2],
-[
-  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
-  AC_REQUIRE([AC_CANONICAL_HOST])
-  AC_CHECK_FUNCS_ONCE([dup2])
-  if test $ac_cv_func_dup2 = no; then
-    HAVE_DUP2=0
-    AC_LIBOBJ([dup2])
-  else
-    AC_CACHE_CHECK([whether dup2 works], [gl_cv_func_dup2_works],
-      [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
-#include <unistd.h>
-]], [return 1 - dup2 (1, 1);])],
-	[gl_cv_func_dup2_works=yes], [gl_cv_func_dup2_works=no],
-	[case "$host_os" in
-	   mingw*) # on this platform, dup2 always returns 0 for success
-	     gl_cv_func_dup2_works=no;;
-	   cygwin*) # on cygwin 1.5.x, dup2(1,1) returns 0
-	     gl_cv_func_dup2_works=no;;
-	   *) gl_cv_func_dup2_works=yes;;
-	 esac])])
-    if test "$gl_cv_func_dup2_works" = no; then
-      REPLACE_DUP2=1
-      AC_LIBOBJ([dup2])
-    fi
-  fi
-  AC_DEFINE_UNQUOTED([REPLACE_DUP2], [$REPLACE_DUP2],
-    [Define to 1 if dup2 returns 0 instead of the target fd.])
-])
diff --git a/gnulib-m4/eealloc.m4 b/gnulib-m4/eealloc.m4
index 3c9c0b52..63dd9202 100644
--- a/gnulib-m4/eealloc.m4
+++ b/gnulib-m4/eealloc.m4
@@ -1,5 +1,5 @@
 # eealloc.m4 serial 2
-dnl Copyright (C) 2003, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/environ.m4 b/gnulib-m4/environ.m4
index b17bb60a..5f50d6e3 100644
--- a/gnulib-m4/environ.m4
+++ b/gnulib-m4/environ.m4
@@ -1,10 +1,10 @@
-# environ.m4 serial 2
-dnl Copyright (C) 2001-2004, 2006-2009 Free Software Foundation, Inc.
+# environ.m4 serial 3
+dnl Copyright (C) 2001-2004, 2006-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
-AC_DEFUN([gl_ENVIRON],
+AC_DEFUN_ONCE([gl_ENVIRON],
 [
   AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
   dnl Persuade glibc <unistd.h> to declare environ.
diff --git a/gnulib-m4/errno_h.m4 b/gnulib-m4/errno_h.m4
index 4ce1ccbd..d02a0393 100644
--- a/gnulib-m4/errno_h.m4
+++ b/gnulib-m4/errno_h.m4
@@ -1,5 +1,5 @@
 # errno_h.m4 serial 6
-dnl Copyright (C) 2004, 2006, 2008, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2004, 2006, 2008, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/error.m4 b/gnulib-m4/error.m4
index 7c7746e2..9f1307a4 100644
--- a/gnulib-m4/error.m4
+++ b/gnulib-m4/error.m4
@@ -1,7 +1,6 @@
-#serial 11
+#serial 12
 
-# Copyright (C) 1996, 1997, 1998, 2001, 2002, 2003, 2004 Free Software
-# Foundation, Inc.
+# Copyright (C) 1996-1998, 2001-2004, 2009-2010 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -18,5 +17,6 @@ AC_DEFUN([gl_ERROR],
 AC_DEFUN([gl_PREREQ_ERROR],
 [
   AC_REQUIRE([AC_FUNC_STRERROR_R])
+  AC_REQUIRE([AC_C_INLINE])
   :
 ])
diff --git a/gnulib-m4/exitfail.m4 b/gnulib-m4/exitfail.m4
deleted file mode 100644
index b7a691e5..00000000
--- a/gnulib-m4/exitfail.m4
+++ /dev/null
@@ -1,13 +0,0 @@
-# exitfail.m4 serial 6
-dnl Copyright (C) 2002, 2003, 2005, 2006 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
-AC_DEFUN([gl_EXITFAIL],
-[
-  AC_LIBOBJ([exitfail])
-
-  dnl No prerequisites of lib/exitfail.c.
-  :
-])
diff --git a/gnulib-m4/exponentd.m4 b/gnulib-m4/exponentd.m4
index 140cee4a..5d44d0e0 100644
--- a/gnulib-m4/exponentd.m4
+++ b/gnulib-m4/exponentd.m4
@@ -1,5 +1,5 @@
 # exponentd.m4 serial 1
-dnl Copyright (C) 2007-2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/exponentf.m4 b/gnulib-m4/exponentf.m4
index 7ff34131..4d8063fa 100644
--- a/gnulib-m4/exponentf.m4
+++ b/gnulib-m4/exponentf.m4
@@ -1,5 +1,5 @@
 # exponentf.m4 serial 1
-dnl Copyright (C) 2007-2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/exponentl.m4 b/gnulib-m4/exponentl.m4
index 98e35eb2..a700d3ba 100644
--- a/gnulib-m4/exponentl.m4
+++ b/gnulib-m4/exponentl.m4
@@ -1,5 +1,5 @@
 # exponentl.m4 serial 2
-dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/extensions.m4 b/gnulib-m4/extensions.m4
index ba6d5e19..7d9458a8 100644
--- a/gnulib-m4/extensions.m4
+++ b/gnulib-m4/extensions.m4
@@ -1,7 +1,7 @@
-# serial 8  -*- Autoconf -*-
+# serial 9  -*- Autoconf -*-
 # Enable extensions on systems that normally disable them.
 
-# Copyright (C) 2003, 2006-2009 Free Software Foundation, Inc.
+# Copyright (C) 2003, 2006-2010 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
@@ -12,6 +12,20 @@
 # enough in this area it's likely we'll need to redefine
 # AC_USE_SYSTEM_EXTENSIONS for quite some time.
 
+# If autoconf reports a warning
+#     warning: AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
+# or  warning: AC_RUN_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
+# the fix is
+#   1) to ensure that AC_USE_SYSTEM_EXTENSIONS is never directly invoked
+#      but always AC_REQUIREd,
+#   2) to ensure that for each occurrence of
+#        AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+#      or
+#        AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+#      the corresponding gnulib module description has 'extensions' among
+#      its dependencies. This will ensure that the gl_USE_SYSTEM_EXTENSIONS
+#      invocation occurs in gl_EARLY, not in gl_INIT.
+
 # AC_USE_SYSTEM_EXTENSIONS
 # ------------------------
 # Enable extensions on systems that normally disable them,
@@ -74,8 +88,8 @@ AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
     [ac_cv_safe_to_define___extensions__],
     [AC_COMPILE_IFELSE(
        [AC_LANG_PROGRAM([[
-#	  define __EXTENSIONS__ 1
-	  ]AC_INCLUDES_DEFAULT])],
+#         define __EXTENSIONS__ 1
+          ]AC_INCLUDES_DEFAULT])],
        [ac_cv_safe_to_define___extensions__=yes],
        [ac_cv_safe_to_define___extensions__=no])])
   test $ac_cv_safe_to_define___extensions__ = yes &&
diff --git a/gnulib-m4/fcntl-o.m4 b/gnulib-m4/fcntl-o.m4
new file mode 100644
index 00000000..d416a61c
--- /dev/null
+++ b/gnulib-m4/fcntl-o.m4
@@ -0,0 +1,81 @@
+# fcntl-o.m4 serial 1
+dnl Copyright (C) 2006, 2009-2010 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Paul Eggert.
+
+# Test whether the flags O_NOATIME and O_NOFOLLOW actually work.
+# Define HAVE_WORKING_O_NOATIME to 1 if O_NOATIME works, or to 0 otherwise.
+# Define HAVE_WORKING_O_NOFOLLOW to 1 if O_NOFOLLOW works, or to 0 otherwise.
+AC_DEFUN([gl_FCNTL_O_FLAGS],
+[
+  dnl Persuade glibc <fcntl.h> to define O_NOATIME and O_NOFOLLOW.
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+  AC_CACHE_CHECK([for working fcntl.h], [gl_cv_header_working_fcntl_h],
+    [AC_RUN_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <sys/types.h>
+           #include <sys/stat.h>
+           #include <unistd.h>
+           #include <fcntl.h>
+           #ifndef O_NOATIME
+            #define O_NOATIME 0
+           #endif
+           #ifndef O_NOFOLLOW
+            #define O_NOFOLLOW 0
+           #endif
+           static int const constants[] =
+            {
+              O_CREAT, O_EXCL, O_NOCTTY, O_TRUNC, O_APPEND,
+              O_NONBLOCK, O_SYNC, O_ACCMODE, O_RDONLY, O_RDWR, O_WRONLY
+            };
+          ]],
+          [[
+            int status = !constants;
+            {
+              static char const sym[] = "conftest.sym";
+              if (symlink (".", sym) != 0
+                  || close (open (sym, O_RDONLY | O_NOFOLLOW)) == 0)
+                status |= 32;
+              unlink (sym);
+            }
+            {
+              static char const file[] = "confdefs.h";
+              int fd = open (file, O_RDONLY | O_NOATIME);
+              char c;
+              struct stat st0, st1;
+              if (fd < 0
+                  || fstat (fd, &st0) != 0
+                  || sleep (1) != 0
+                  || read (fd, &c, 1) != 1
+                  || close (fd) != 0
+                  || stat (file, &st1) != 0
+                  || st0.st_atime != st1.st_atime)
+                status |= 64;
+            }
+            return status;]])],
+       [gl_cv_header_working_fcntl_h=yes],
+       [case $? in #(
+        32) gl_cv_header_working_fcntl_h='no (bad O_NOFOLLOW)';; #(
+        64) gl_cv_header_working_fcntl_h='no (bad O_NOATIME)';; #(
+        96) gl_cv_header_working_fcntl_h='no (bad O_NOATIME, O_NOFOLLOW)';; #(
+         *) gl_cv_header_working_fcntl_h='no';;
+        esac],
+       [gl_cv_header_working_fcntl_h=cross-compiling])])
+
+  case $gl_cv_header_working_fcntl_h in #(
+  *O_NOATIME* | no | cross-compiling) ac_val=0;; #(
+  *) ac_val=1;;
+  esac
+  AC_DEFINE_UNQUOTED([HAVE_WORKING_O_NOATIME], [$ac_val],
+    [Define to 1 if O_NOATIME works.])
+
+  case $gl_cv_header_working_fcntl_h in #(
+  *O_NOFOLLOW* | no | cross-compiling) ac_val=0;; #(
+  *) ac_val=1;;
+  esac
+  AC_DEFINE_UNQUOTED([HAVE_WORKING_O_NOFOLLOW], [$ac_val],
+    [Define to 1 if O_NOFOLLOW works.])
+])
diff --git a/gnulib-m4/fcntl_h.m4 b/gnulib-m4/fcntl_h.m4
deleted file mode 100644
index 1ae0b15a..00000000
--- a/gnulib-m4/fcntl_h.m4
+++ /dev/null
@@ -1,96 +0,0 @@
-# Configure fcntl.h.
-dnl Copyright (C) 2006, 2007, 2009 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
-dnl Written by Paul Eggert.
-
-AC_DEFUN([gl_FCNTL_H],
-[
-  AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
-  dnl Persuade glibc <fcntl.h> to define O_NOATIME and O_NOFOLLOW.
-  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
-  AC_CACHE_CHECK([for working fcntl.h], [gl_cv_header_working_fcntl_h],
-    [AC_RUN_IFELSE(
-       [AC_LANG_PROGRAM(
-	  [[#include <sys/types.h>
-	   #include <sys/stat.h>
-	   #include <unistd.h>
-	   #include <fcntl.h>
-	   #ifndef O_NOATIME
-	    #define O_NOATIME 0
-	   #endif
-	   #ifndef O_NOFOLLOW
-	    #define O_NOFOLLOW 0
-	   #endif
-	   static int const constants[] =
-	    {
-	      O_CREAT, O_EXCL, O_NOCTTY, O_TRUNC, O_APPEND,
-	      O_NONBLOCK, O_SYNC, O_ACCMODE, O_RDONLY, O_RDWR, O_WRONLY
-	    };
-	  ]],
-	  [[
-	    int status = !constants;
-	    {
-	      static char const sym[] = "conftest.sym";
-	      if (symlink (".", sym) != 0
-		  || close (open (sym, O_RDONLY | O_NOFOLLOW)) == 0)
-		status |= 32;
-	    }
-	    {
-	      static char const file[] = "confdefs.h";
-	      int fd = open (file, O_RDONLY | O_NOATIME);
-	      char c;
-	      struct stat st0, st1;
-	      if (fd < 0
-		  || fstat (fd, &st0) != 0
-		  || sleep (1) != 0
-		  || read (fd, &c, 1) != 1
-		  || close (fd) != 0
-		  || stat (file, &st1) != 0
-		  || st0.st_atime != st1.st_atime)
-		status |= 64;
-	    }
-	    return status;]])],
-       [gl_cv_header_working_fcntl_h=yes],
-       [case $? in #(
-	32) gl_cv_header_working_fcntl_h='no (bad O_NOFOLLOW)';; #(
-	64) gl_cv_header_working_fcntl_h='no (bad O_NOATIME)';; #(
-	96) gl_cv_header_working_fcntl_h='no (bad O_NOATIME, O_NOFOLLOW)';; #(
-	 *) gl_cv_header_working_fcntl_h='no';;
-	esac],
-       [gl_cv_header_working_fcntl_h=cross-compiling])])
-
-  case $gl_cv_header_working_fcntl_h in #(
-  *O_NOATIME* | no | cross-compiling) ac_val=0;; #(
-  *) ac_val=1;;
-  esac
-  AC_DEFINE_UNQUOTED([HAVE_WORKING_O_NOATIME], [$ac_val],
-    [Define to 1 if O_NOATIME works.])
-
-  case $gl_cv_header_working_fcntl_h in #(
-  *O_NOFOLLOW* | no | cross-compiling) ac_val=0;; #(
-  *) ac_val=1;;
-  esac
-  AC_DEFINE_UNQUOTED([HAVE_WORKING_O_NOFOLLOW], [$ac_val],
-    [Define to 1 if O_NOFOLLOW works.])
-
-  gl_CHECK_NEXT_HEADERS([fcntl.h])
-  FCNTL_H='fcntl.h'
-  AC_SUBST([FCNTL_H])
-])
-
-AC_DEFUN([gl_FCNTL_MODULE_INDICATOR],
-[
-  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
-  AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
-])
-
-AC_DEFUN([gl_FCNTL_H_DEFAULTS],
-[
-  GNULIB_OPEN=0;  AC_SUBST([GNULIB_OPEN])
-  dnl Assume proper GNU behavior unless another module says otherwise.
-  REPLACE_OPEN=0; AC_SUBST([REPLACE_OPEN])
-])
diff --git a/gnulib-m4/float_h.m4 b/gnulib-m4/float_h.m4
index d36e3a46..a74a0d95 100644
--- a/gnulib-m4/float_h.m4
+++ b/gnulib-m4/float_h.m4
@@ -1,5 +1,5 @@
 # float_h.m4 serial 3
-dnl Copyright (C) 2007 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/fpieee.m4 b/gnulib-m4/fpieee.m4
index 9f4a92cb..532802d7 100644
--- a/gnulib-m4/fpieee.m4
+++ b/gnulib-m4/fpieee.m4
@@ -1,5 +1,5 @@
 # fpieee.m4 serial 1
-dnl Copyright (C) 2007 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/frexp.m4 b/gnulib-m4/frexp.m4
index 6c911121..3a450f65 100644
--- a/gnulib-m4/frexp.m4
+++ b/gnulib-m4/frexp.m4
@@ -1,5 +1,5 @@
 # frexp.m4 serial 7
-dnl Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/frexpl.m4 b/gnulib-m4/frexpl.m4
index c5da7446..80165204 100644
--- a/gnulib-m4/frexpl.m4
+++ b/gnulib-m4/frexpl.m4
@@ -1,5 +1,5 @@
 # frexpl.m4 serial 9
-dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -7,54 +7,56 @@ dnl with or without modifications, as long as this notice is preserved.
 AC_DEFUN([gl_FUNC_FREXPL],
 [
   AC_REQUIRE([gl_MATH_H_DEFAULTS])
+  dnl Check whether it's declared.
+  dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
+  AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [#include <math.h>])
   FREXPL_LIBM=
-  AC_CACHE_CHECK([whether frexpl() can be used without linking with libm],
-    [gl_cv_func_frexpl_no_libm],
-    [
-      AC_TRY_LINK([#include <math.h>
-                   long double x;],
-                  [int e; return frexpl (x, &e) > 0;],
-        [gl_cv_func_frexpl_no_libm=yes],
-        [gl_cv_func_frexpl_no_libm=no])
-    ])
-  if test $gl_cv_func_frexpl_no_libm = no; then
-    AC_CACHE_CHECK([whether frexpl() can be used with libm],
-      [gl_cv_func_frexpl_in_libm],
+  if test $HAVE_DECL_FREXPL = 1; then
+    AC_CACHE_CHECK([whether frexpl() can be used without linking with libm],
+      [gl_cv_func_frexpl_no_libm],
       [
-        save_LIBS="$LIBS"
-        LIBS="$LIBS -lm"
         AC_TRY_LINK([#include <math.h>
                      long double x;],
                     [int e; return frexpl (x, &e) > 0;],
-          [gl_cv_func_frexpl_in_libm=yes],
-          [gl_cv_func_frexpl_in_libm=no])
-        LIBS="$save_LIBS"
+          [gl_cv_func_frexpl_no_libm=yes],
+          [gl_cv_func_frexpl_no_libm=no])
       ])
-    if test $gl_cv_func_frexpl_in_libm = yes; then
-      FREXPL_LIBM=-lm
+    if test $gl_cv_func_frexpl_no_libm = no; then
+      AC_CACHE_CHECK([whether frexpl() can be used with libm],
+        [gl_cv_func_frexpl_in_libm],
+        [
+          save_LIBS="$LIBS"
+          LIBS="$LIBS -lm"
+          AC_TRY_LINK([#include <math.h>
+                       long double x;],
+                      [int e; return frexpl (x, &e) > 0;],
+            [gl_cv_func_frexpl_in_libm=yes],
+            [gl_cv_func_frexpl_in_libm=no])
+          LIBS="$save_LIBS"
+        ])
+      if test $gl_cv_func_frexpl_in_libm = yes; then
+        FREXPL_LIBM=-lm
+      fi
+    fi
+    if test $gl_cv_func_frexpl_no_libm = yes \
+       || test $gl_cv_func_frexpl_in_libm = yes; then
+      save_LIBS="$LIBS"
+      LIBS="$LIBS $FREXPL_LIBM"
+      gl_FUNC_FREXPL_WORKS
+      LIBS="$save_LIBS"
+      case "$gl_cv_func_frexpl_works" in
+        *yes) gl_func_frexpl=yes ;;
+        *)    gl_func_frexpl=no; REPLACE_FREXPL=1; FREXPL_LIBM= ;;
+      esac
+    else
+      gl_func_frexpl=no
+    fi
+    if test $gl_func_frexpl = yes; then
+      AC_DEFINE([HAVE_FREXPL], [1],
+        [Define if the frexpl() function is available.])
     fi
   fi
-  if test $gl_cv_func_frexpl_no_libm = yes \
-     || test $gl_cv_func_frexpl_in_libm = yes; then
-    save_LIBS="$LIBS"
-    LIBS="$LIBS $FREXPL_LIBM"
-    gl_FUNC_FREXPL_WORKS
-    LIBS="$save_LIBS"
-    case "$gl_cv_func_frexpl_works" in
-      *yes) gl_func_frexpl=yes ;;
-      *)    gl_func_frexpl=no; REPLACE_FREXPL=1; FREXPL_LIBM= ;;
-    esac
-  else
-    gl_func_frexpl=no
-  fi
-  if test $gl_func_frexpl = yes; then
-    AC_DEFINE([HAVE_FREXPL], [1],
-      [Define if the frexpl() function is available.])
-    dnl Also check whether it's declared.
-    dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
-    AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [#include <math.h>])
-  else
-    HAVE_DECL_FREXPL=0
+  if test $HAVE_DECL_FREXPL = 0 || test $gl_func_frexpl = no; then
     AC_LIBOBJ([frexpl])
   fi
   AC_SUBST([FREXPL_LIBM])
@@ -63,34 +65,36 @@ AC_DEFUN([gl_FUNC_FREXPL],
 AC_DEFUN([gl_FUNC_FREXPL_NO_LIBM],
 [
   AC_REQUIRE([gl_MATH_H_DEFAULTS])
-  AC_CACHE_CHECK([whether frexpl() can be used without linking with libm],
-    [gl_cv_func_frexpl_no_libm],
-    [
-      AC_TRY_LINK([#include <math.h>
-                   long double x;],
-                  [int e; return frexpl (x, &e) > 0;],
-        [gl_cv_func_frexpl_no_libm=yes],
-        [gl_cv_func_frexpl_no_libm=no])
-    ])
-  if test $gl_cv_func_frexpl_no_libm = yes; then
-    gl_FUNC_FREXPL_WORKS
-    case "$gl_cv_func_frexpl_works" in
-      *yes) gl_func_frexpl_no_libm=yes ;;
-      *)    gl_func_frexpl_no_libm=no; REPLACE_FREXPL=1 ;;
-    esac
-  else
-    gl_func_frexpl_no_libm=no
-    dnl Set REPLACE_FREXPL here because the system may have frexpl in libm.
-    REPLACE_FREXPL=1
+  dnl Check whether it's declared.
+  dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
+  AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [#include <math.h>])
+  if test $HAVE_DECL_FREXPL = 1; then
+    AC_CACHE_CHECK([whether frexpl() can be used without linking with libm],
+      [gl_cv_func_frexpl_no_libm],
+      [
+        AC_TRY_LINK([#include <math.h>
+                     long double x;],
+                    [int e; return frexpl (x, &e) > 0;],
+          [gl_cv_func_frexpl_no_libm=yes],
+          [gl_cv_func_frexpl_no_libm=no])
+      ])
+    if test $gl_cv_func_frexpl_no_libm = yes; then
+      gl_FUNC_FREXPL_WORKS
+      case "$gl_cv_func_frexpl_works" in
+        *yes) gl_func_frexpl_no_libm=yes ;;
+        *)    gl_func_frexpl_no_libm=no; REPLACE_FREXPL=1 ;;
+      esac
+    else
+      gl_func_frexpl_no_libm=no
+      dnl Set REPLACE_FREXPL here because the system may have frexpl in libm.
+      REPLACE_FREXPL=1
+    fi
+    if test $gl_func_frexpl_no_libm = yes; then
+      AC_DEFINE([HAVE_FREXPL_IN_LIBC], [1],
+        [Define if the frexpl() function is available in libc.])
+    fi
   fi
-  if test $gl_func_frexpl_no_libm = yes; then
-    AC_DEFINE([HAVE_FREXPL_IN_LIBC], [1],
-      [Define if the frexpl() function is available in libc.])
-    dnl Also check whether it's declared.
-    dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
-    AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [#include <math.h>])
-  else
-    HAVE_DECL_FREXPL=0
+  if test $HAVE_DECL_FREXPL = 0 || test $gl_func_frexpl_no_libm = no; then
     AC_LIBOBJ([frexpl])
   fi
 ])
diff --git a/gnulib-m4/getpagesize.m4 b/gnulib-m4/getpagesize.m4
index 0d07a3a5..313ad7fa 100644
--- a/gnulib-m4/getpagesize.m4
+++ b/gnulib-m4/getpagesize.m4
@@ -1,5 +1,6 @@
-# getpagesize.m4 serial 7
-dnl Copyright (C) 2002, 2004-2005, 2007 Free Software Foundation, Inc.
+# getpagesize.m4 serial 8
+dnl Copyright (C) 2002, 2004-2005, 2007, 2009-2010 Free Software Foundation,
+dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -26,4 +27,7 @@ AC_DEFUN([gl_FUNC_GETPAGESIZE],
       AC_LIBOBJ([getpagesize])
       ;;
   esac
+  dnl Also check whether it's declared.
+  dnl mingw has getpagesize() in libgcc.a but doesn't declare it.
+  AC_CHECK_DECL([getpagesize], , [HAVE_DECL_GETPAGESIZE=0])
 ])
diff --git a/gnulib-m4/glibc21.m4 b/gnulib-m4/glibc21.m4
index 93fbf474..68ada9d4 100644
--- a/gnulib-m4/glibc21.m4
+++ b/gnulib-m4/glibc21.m4
@@ -1,5 +1,5 @@
 # glibc21.m4 serial 4
-dnl Copyright (C) 2000-2002, 2004, 2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2000-2002, 2004, 2008-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -12,16 +12,16 @@ AC_DEFUN([gl_GLIBC21],
     AC_CACHE_CHECK([whether we are using the GNU C Library 2.1 or newer],
       [ac_cv_gnu_library_2_1],
       [AC_EGREP_CPP([Lucky GNU user],
-	[
+        [
 #include <features.h>
 #ifdef __GNU_LIBRARY__
  #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
   Lucky GNU user
  #endif
 #endif
-	],
-	[ac_cv_gnu_library_2_1=yes],
-	[ac_cv_gnu_library_2_1=no])
+        ],
+        [ac_cv_gnu_library_2_1=yes],
+        [ac_cv_gnu_library_2_1=no])
       ]
     )
     AC_SUBST([GLIBC21])
diff --git a/gnulib-m4/gnulib-cache.m4 b/gnulib-m4/gnulib-cache.m4
index b3ae1d22..72bc8cce 100644
--- a/gnulib-m4/gnulib-cache.m4
+++ b/gnulib-m4/gnulib-cache.m4
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2009 Free Software Foundation, Inc.
+# Copyright (C) 2002-2010 Free Software Foundation, Inc.
 #
 # This file is free software, distributed under the terms of the GNU
 # General Public License.  As a special exception to the GNU General
@@ -15,7 +15,7 @@
 
 
 # Specification in the form of a command-line invocation:
-#   gnulib-tool --import --dir=. --local-dir=gnulib-local --lib=libunistring --source-base=lib --m4-base=gnulib-m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --with-tests --lgpl --makefile-name=Makefile.gnulib --libtool --macro-prefix=gl relocatable-lib-lgpl unicase/base unicase/empty-prefix-context unicase/empty-suffix-context unicase/locale-language unicase/tolower unicase/totitle unicase/toupper unicase/u16-casecmp unicase/u16-casecoll unicase/u16-casefold unicase/u16-casexfrm unicase/u16-ct-casefold unicase/u16-ct-tolower unicase/u16-ct-totitle unicase/u16-ct-toupper unicase/u16-is-cased unicase/u16-is-casefolded unicase/u16-is-lowercase unicase/u16-is-titlecase unicase/u16-is-uppercase unicase/u16-tolower unicase/u16-totitle unicase/u16-toupper unicase/u32-casecmp unicase/u32-casecoll unicase/u32-casefold unicase/u32-casexfrm unicase/u32-ct-casefold unicase/u32-ct-tolower unicase/u32-ct-totitle unicase/u32-ct-toupper unicase/u32-is-cased unicase/u32-is-casefolded unicase/u32-is-lowercase unicase/u32-is-titlecase unicase/u32-is-uppercase unicase/u32-tolower unicase/u32-totitle unicase/u32-toupper unicase/u8-casecmp unicase/u8-casecoll unicase/u8-casefold unicase/u8-casexfrm unicase/u8-ct-casefold unicase/u8-ct-tolower unicase/u8-ct-totitle unicase/u8-ct-toupper unicase/u8-is-cased unicase/u8-is-casefolded unicase/u8-is-lowercase unicase/u8-is-titlecase unicase/u8-is-uppercase unicase/u8-tolower unicase/u8-totitle unicase/u8-toupper unicase/ulc-casecmp unicase/ulc-casecoll unicase/ulc-casexfrm uniconv/base uniconv/u16-conv-from-enc uniconv/u16-conv-to-enc uniconv/u16-strconv-from-enc uniconv/u16-strconv-from-locale uniconv/u16-strconv-to-enc uniconv/u16-strconv-to-locale uniconv/u32-conv-from-enc uniconv/u32-conv-to-enc uniconv/u32-strconv-from-enc uniconv/u32-strconv-from-locale uniconv/u32-strconv-to-enc uniconv/u32-strconv-to-locale uniconv/u8-conv-from-enc uniconv/u8-conv-to-enc uniconv/u8-strconv-from-enc uniconv/u8-strconv-from-locale uniconv/u8-strconv-to-enc uniconv/u8-strconv-to-locale unictype/base unictype/bidicategory-all unictype/block-all unictype/category-all unictype/combining-class unictype/ctype-alnum unictype/ctype-alpha unictype/ctype-blank unictype/ctype-cntrl unictype/ctype-digit unictype/ctype-graph unictype/ctype-lower unictype/ctype-print unictype/ctype-punct unictype/ctype-space unictype/ctype-upper unictype/ctype-xdigit unictype/decimal-digit unictype/digit unictype/mirror unictype/numeric unictype/property-all unictype/scripts-all unictype/syntax-c-ident unictype/syntax-c-whitespace unictype/syntax-java-ident unictype/syntax-java-whitespace unilbrk/base unilbrk/tables unilbrk/u16-possible-linebreaks unilbrk/u16-width-linebreaks unilbrk/u32-possible-linebreaks unilbrk/u32-width-linebreaks unilbrk/u8-possible-linebreaks unilbrk/u8-width-linebreaks unilbrk/ulc-possible-linebreaks unilbrk/ulc-width-linebreaks uniname/base uniname/uniname uninorm/base uninorm/canonical-decomposition uninorm/compat-decomposition uninorm/composition uninorm/decomposition uninorm/filter uninorm/nfc uninorm/nfd uninorm/nfkc uninorm/nfkd uninorm/u16-normalize uninorm/u16-normcmp uninorm/u16-normcoll uninorm/u16-normxfrm uninorm/u32-normalize uninorm/u32-normcmp uninorm/u32-normcoll uninorm/u32-normxfrm uninorm/u8-normalize uninorm/u8-normcmp uninorm/u8-normcoll uninorm/u8-normxfrm unistdio/base unistdio/u16-asnprintf unistdio/u16-asprintf unistdio/u16-snprintf unistdio/u16-sprintf unistdio/u16-u16-asnprintf unistdio/u16-u16-asprintf unistdio/u16-u16-snprintf unistdio/u16-u16-sprintf unistdio/u16-u16-vasnprintf unistdio/u16-u16-vasprintf unistdio/u16-u16-vsnprintf unistdio/u16-u16-vsprintf unistdio/u16-vasnprintf unistdio/u16-vasprintf unistdio/u16-vsnprintf unistdio/u16-vsprintf unistdio/u32-asnprintf unistdio/u32-asprintf unistdio/u32-snprintf unistdio/u32-sprintf unistdio/u32-u32-asnprintf unistdio/u32-u32-asprintf unistdio/u32-u32-snprintf unistdio/u32-u32-sprintf unistdio/u32-u32-vasnprintf unistdio/u32-u32-vasprintf unistdio/u32-u32-vsnprintf unistdio/u32-u32-vsprintf unistdio/u32-vasnprintf unistdio/u32-vasprintf unistdio/u32-vsnprintf unistdio/u32-vsprintf unistdio/u8-asnprintf unistdio/u8-asprintf unistdio/u8-snprintf unistdio/u8-sprintf unistdio/u8-u8-asnprintf unistdio/u8-u8-asprintf unistdio/u8-u8-snprintf unistdio/u8-u8-sprintf unistdio/u8-u8-vasnprintf unistdio/u8-u8-vasprintf unistdio/u8-u8-vsnprintf unistdio/u8-u8-vsprintf unistdio/u8-vasnprintf unistdio/u8-vasprintf unistdio/u8-vsnprintf unistdio/u8-vsprintf unistdio/ulc-asnprintf unistdio/ulc-asprintf unistdio/ulc-fprintf unistdio/ulc-snprintf unistdio/ulc-sprintf unistdio/ulc-vasnprintf unistdio/ulc-vasprintf unistdio/ulc-vfprintf unistdio/ulc-vsnprintf unistdio/ulc-vsprintf unistr/base unistr/u16-check unistr/u16-chr unistr/u16-cmp unistr/u16-cmp2 unistr/u16-cpy unistr/u16-cpy-alloc unistr/u16-endswith unistr/u16-mblen unistr/u16-mbsnlen unistr/u16-mbtouc unistr/u16-mbtouc-unsafe unistr/u16-mbtoucr unistr/u16-move unistr/u16-next unistr/u16-prev unistr/u16-set unistr/u16-startswith unistr/u16-stpcpy unistr/u16-stpncpy unistr/u16-strcat unistr/u16-strchr unistr/u16-strcmp unistr/u16-strcoll unistr/u16-strcpy unistr/u16-strcspn unistr/u16-strdup unistr/u16-strlen unistr/u16-strmblen unistr/u16-strmbtouc unistr/u16-strncat unistr/u16-strncmp unistr/u16-strncpy unistr/u16-strnlen unistr/u16-strpbrk unistr/u16-strrchr unistr/u16-strspn unistr/u16-strstr unistr/u16-strtok unistr/u16-to-u32 unistr/u16-to-u8 unistr/u16-uctomb unistr/u32-check unistr/u32-chr unistr/u32-cmp unistr/u32-cmp2 unistr/u32-cpy unistr/u32-cpy-alloc unistr/u32-endswith unistr/u32-mblen unistr/u32-mbsnlen unistr/u32-mbtouc unistr/u32-mbtouc-unsafe unistr/u32-mbtoucr unistr/u32-move unistr/u32-next unistr/u32-prev unistr/u32-set unistr/u32-startswith unistr/u32-stpcpy unistr/u32-stpncpy unistr/u32-strcat unistr/u32-strchr unistr/u32-strcmp unistr/u32-strcoll unistr/u32-strcpy unistr/u32-strcspn unistr/u32-strdup unistr/u32-strlen unistr/u32-strmblen unistr/u32-strmbtouc unistr/u32-strncat unistr/u32-strncmp unistr/u32-strncpy unistr/u32-strnlen unistr/u32-strpbrk unistr/u32-strrchr unistr/u32-strspn unistr/u32-strstr unistr/u32-strtok unistr/u32-to-u16 unistr/u32-to-u8 unistr/u32-uctomb unistr/u8-check unistr/u8-chr unistr/u8-cmp unistr/u8-cmp2 unistr/u8-cpy unistr/u8-cpy-alloc unistr/u8-endswith unistr/u8-mblen unistr/u8-mbsnlen unistr/u8-mbtouc unistr/u8-mbtouc-unsafe unistr/u8-mbtoucr unistr/u8-move unistr/u8-next unistr/u8-prev unistr/u8-set unistr/u8-startswith unistr/u8-stpcpy unistr/u8-stpncpy unistr/u8-strcat unistr/u8-strchr unistr/u8-strcmp unistr/u8-strcoll unistr/u8-strcpy unistr/u8-strcspn unistr/u8-strdup unistr/u8-strlen unistr/u8-strmblen unistr/u8-strmbtouc unistr/u8-strncat unistr/u8-strncmp unistr/u8-strncpy unistr/u8-strnlen unistr/u8-strpbrk unistr/u8-strrchr unistr/u8-strspn unistr/u8-strstr unistr/u8-strtok unistr/u8-to-u16 unistr/u8-to-u32 unistr/u8-uctomb unitypes uniwbrk/base uniwbrk/u16-wordbreaks uniwbrk/u32-wordbreaks uniwbrk/u8-wordbreaks uniwbrk/ulc-wordbreaks uniwbrk/wordbreak-property uniwidth/base uniwidth/u16-strwidth uniwidth/u16-width uniwidth/u32-strwidth uniwidth/u32-width uniwidth/u8-strwidth uniwidth/u8-width uniwidth/width
+#   gnulib-tool --import --dir=. --local-dir=gnulib-local --lib=libunistring --source-base=lib --m4-base=gnulib-m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --with-tests --lgpl --makefile-name=Makefile.gnulib --libtool --macro-prefix=gl relocatable-lib-lgpl unicase/base unicase/empty-prefix-context unicase/empty-suffix-context unicase/locale-language unicase/tolower unicase/totitle unicase/toupper unicase/u16-casecmp unicase/u16-casecoll unicase/u16-casefold unicase/u16-casexfrm unicase/u16-ct-casefold unicase/u16-ct-tolower unicase/u16-ct-totitle unicase/u16-ct-toupper unicase/u16-is-cased unicase/u16-is-casefolded unicase/u16-is-lowercase unicase/u16-is-titlecase unicase/u16-is-uppercase unicase/u16-tolower unicase/u16-totitle unicase/u16-toupper unicase/u32-casecmp unicase/u32-casecoll unicase/u32-casefold unicase/u32-casexfrm unicase/u32-ct-casefold unicase/u32-ct-tolower unicase/u32-ct-totitle unicase/u32-ct-toupper unicase/u32-is-cased unicase/u32-is-casefolded unicase/u32-is-lowercase unicase/u32-is-titlecase unicase/u32-is-uppercase unicase/u32-tolower unicase/u32-totitle unicase/u32-toupper unicase/u8-casecmp unicase/u8-casecoll unicase/u8-casefold unicase/u8-casexfrm unicase/u8-ct-casefold unicase/u8-ct-tolower unicase/u8-ct-totitle unicase/u8-ct-toupper unicase/u8-is-cased unicase/u8-is-casefolded unicase/u8-is-lowercase unicase/u8-is-titlecase unicase/u8-is-uppercase unicase/u8-tolower unicase/u8-totitle unicase/u8-toupper unicase/ulc-casecmp unicase/ulc-casecoll unicase/ulc-casexfrm uniconv/base uniconv/u16-conv-from-enc uniconv/u16-conv-to-enc uniconv/u16-strconv-from-enc uniconv/u16-strconv-from-locale uniconv/u16-strconv-to-enc uniconv/u16-strconv-to-locale uniconv/u32-conv-from-enc uniconv/u32-conv-to-enc uniconv/u32-strconv-from-enc uniconv/u32-strconv-from-locale uniconv/u32-strconv-to-enc uniconv/u32-strconv-to-locale uniconv/u8-conv-from-enc uniconv/u8-conv-to-enc uniconv/u8-strconv-from-enc uniconv/u8-strconv-from-locale uniconv/u8-strconv-to-enc uniconv/u8-strconv-to-locale unictype/base unictype/bidicategory-all unictype/block-all unictype/category-all unictype/combining-class unictype/ctype-alnum unictype/ctype-alpha unictype/ctype-blank unictype/ctype-cntrl unictype/ctype-digit unictype/ctype-graph unictype/ctype-lower unictype/ctype-print unictype/ctype-punct unictype/ctype-space unictype/ctype-upper unictype/ctype-xdigit unictype/decimal-digit unictype/digit unictype/mirror unictype/numeric unictype/property-all unictype/scripts-all unictype/syntax-c-ident unictype/syntax-c-whitespace unictype/syntax-java-ident unictype/syntax-java-whitespace unilbrk/base unilbrk/u16-possible-linebreaks unilbrk/u16-width-linebreaks unilbrk/u32-possible-linebreaks unilbrk/u32-width-linebreaks unilbrk/u8-possible-linebreaks unilbrk/u8-width-linebreaks unilbrk/ulc-possible-linebreaks unilbrk/ulc-width-linebreaks uniname/base uniname/uniname uninorm/base uninorm/canonical-decomposition uninorm/composition uninorm/decomposition uninorm/filter uninorm/nfc uninorm/nfd uninorm/nfkc uninorm/nfkd uninorm/u16-normalize uninorm/u16-normcmp uninorm/u16-normcoll uninorm/u16-normxfrm uninorm/u32-normalize uninorm/u32-normcmp uninorm/u32-normcoll uninorm/u32-normxfrm uninorm/u8-normalize uninorm/u8-normcmp uninorm/u8-normcoll uninorm/u8-normxfrm unistdio/base unistdio/u16-asnprintf unistdio/u16-asprintf unistdio/u16-snprintf unistdio/u16-sprintf unistdio/u16-u16-asnprintf unistdio/u16-u16-asprintf unistdio/u16-u16-snprintf unistdio/u16-u16-sprintf unistdio/u16-u16-vasnprintf unistdio/u16-u16-vasprintf unistdio/u16-u16-vsnprintf unistdio/u16-u16-vsprintf unistdio/u16-vasnprintf unistdio/u16-vasprintf unistdio/u16-vsnprintf unistdio/u16-vsprintf unistdio/u32-asnprintf unistdio/u32-asprintf unistdio/u32-snprintf unistdio/u32-sprintf unistdio/u32-u32-asnprintf unistdio/u32-u32-asprintf unistdio/u32-u32-snprintf unistdio/u32-u32-sprintf unistdio/u32-u32-vasnprintf unistdio/u32-u32-vasprintf unistdio/u32-u32-vsnprintf unistdio/u32-u32-vsprintf unistdio/u32-vasnprintf unistdio/u32-vasprintf unistdio/u32-vsnprintf unistdio/u32-vsprintf unistdio/u8-asnprintf unistdio/u8-asprintf unistdio/u8-snprintf unistdio/u8-sprintf unistdio/u8-u8-asnprintf unistdio/u8-u8-asprintf unistdio/u8-u8-snprintf unistdio/u8-u8-sprintf unistdio/u8-u8-vasnprintf unistdio/u8-u8-vasprintf unistdio/u8-u8-vsnprintf unistdio/u8-u8-vsprintf unistdio/u8-vasnprintf unistdio/u8-vasprintf unistdio/u8-vsnprintf unistdio/u8-vsprintf unistdio/ulc-asnprintf unistdio/ulc-asprintf unistdio/ulc-fprintf unistdio/ulc-snprintf unistdio/ulc-sprintf unistdio/ulc-vasnprintf unistdio/ulc-vasprintf unistdio/ulc-vfprintf unistdio/ulc-vsnprintf unistdio/ulc-vsprintf unistr/base unistr/u16-check unistr/u16-chr unistr/u16-cmp unistr/u16-cmp2 unistr/u16-cpy unistr/u16-cpy-alloc unistr/u16-endswith unistr/u16-mblen unistr/u16-mbsnlen unistr/u16-mbtouc unistr/u16-mbtouc-unsafe unistr/u16-mbtoucr unistr/u16-move unistr/u16-next unistr/u16-prev unistr/u16-set unistr/u16-startswith unistr/u16-stpcpy unistr/u16-stpncpy unistr/u16-strcat unistr/u16-strchr unistr/u16-strcmp unistr/u16-strcoll unistr/u16-strcpy unistr/u16-strcspn unistr/u16-strdup unistr/u16-strlen unistr/u16-strmblen unistr/u16-strmbtouc unistr/u16-strncat unistr/u16-strncmp unistr/u16-strncpy unistr/u16-strnlen unistr/u16-strpbrk unistr/u16-strrchr unistr/u16-strspn unistr/u16-strstr unistr/u16-strtok unistr/u16-to-u32 unistr/u16-to-u8 unistr/u16-uctomb unistr/u32-check unistr/u32-chr unistr/u32-cmp unistr/u32-cmp2 unistr/u32-cpy unistr/u32-cpy-alloc unistr/u32-endswith unistr/u32-mblen unistr/u32-mbsnlen unistr/u32-mbtouc unistr/u32-mbtouc-unsafe unistr/u32-mbtoucr unistr/u32-move unistr/u32-next unistr/u32-prev unistr/u32-set unistr/u32-startswith unistr/u32-stpcpy unistr/u32-stpncpy unistr/u32-strcat unistr/u32-strchr unistr/u32-strcmp unistr/u32-strcoll unistr/u32-strcpy unistr/u32-strcspn unistr/u32-strdup unistr/u32-strlen unistr/u32-strmblen unistr/u32-strmbtouc unistr/u32-strncat unistr/u32-strncmp unistr/u32-strncpy unistr/u32-strnlen unistr/u32-strpbrk unistr/u32-strrchr unistr/u32-strspn unistr/u32-strstr unistr/u32-strtok unistr/u32-to-u16 unistr/u32-to-u8 unistr/u32-uctomb unistr/u8-check unistr/u8-chr unistr/u8-cmp unistr/u8-cmp2 unistr/u8-cpy unistr/u8-cpy-alloc unistr/u8-endswith unistr/u8-mblen unistr/u8-mbsnlen unistr/u8-mbtouc unistr/u8-mbtouc-unsafe unistr/u8-mbtoucr unistr/u8-move unistr/u8-next unistr/u8-prev unistr/u8-set unistr/u8-startswith unistr/u8-stpcpy unistr/u8-stpncpy unistr/u8-strcat unistr/u8-strchr unistr/u8-strcmp unistr/u8-strcoll unistr/u8-strcpy unistr/u8-strcspn unistr/u8-strdup unistr/u8-strlen unistr/u8-strmblen unistr/u8-strmbtouc unistr/u8-strncat unistr/u8-strncmp unistr/u8-strncpy unistr/u8-strnlen unistr/u8-strpbrk unistr/u8-strrchr unistr/u8-strspn unistr/u8-strstr unistr/u8-strtok unistr/u8-to-u16 unistr/u8-to-u32 unistr/u8-uctomb unitypes uniwbrk/base uniwbrk/u16-wordbreaks uniwbrk/u32-wordbreaks uniwbrk/u8-wordbreaks uniwbrk/ulc-wordbreaks uniwbrk/wordbreak-property uniwidth/base uniwidth/u16-strwidth uniwidth/u16-width uniwidth/u32-strwidth uniwidth/u32-width uniwidth/u8-strwidth uniwidth/u8-width uniwidth/width
 
 # Specification in the form of a few gnulib-tool.m4 macro invocations:
 gl_LOCAL_DIR([gnulib-local])
@@ -126,7 +126,6 @@ gl_MODULES([
   unictype/syntax-java-ident
   unictype/syntax-java-whitespace
   unilbrk/base
-  unilbrk/tables
   unilbrk/u16-possible-linebreaks
   unilbrk/u16-width-linebreaks
   unilbrk/u32-possible-linebreaks
@@ -139,7 +138,6 @@ gl_MODULES([
   uniname/uniname
   uninorm/base
   uninorm/canonical-decomposition
-  uninorm/compat-decomposition
   uninorm/composition
   uninorm/decomposition
   uninorm/filter
diff --git a/gnulib-m4/gnulib-common.m4 b/gnulib-m4/gnulib-common.m4
index c8fda203..4c7ac30d 100644
--- a/gnulib-m4/gnulib-common.m4
+++ b/gnulib-m4/gnulib-common.m4
@@ -1,5 +1,5 @@
-# gnulib-common.m4 serial 11
-dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
+# gnulib-common.m4 serial 20
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -23,23 +23,83 @@ AC_DEFUN([gl_COMMON_BODY], [
 # define __GNUC_STDC_INLINE__ 1
 #endif])
   AH_VERBATIM([unused_parameter],
-[/* Define as a marker that can be attached to function parameter declarations
-   for parameters that are not used.  This helps to reduce warnings, such as
-   from GCC -Wunused-parameter.  */
+[/* Define as a marker that can be attached to declarations that might not
+    be used.  This helps to reduce warnings, such as from
+    GCC -Wunused-parameter.  */
 #if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
-# define _UNUSED_PARAMETER_ __attribute__ ((__unused__))
+# define _GL_UNUSED __attribute__ ((__unused__))
 #else
-# define _UNUSED_PARAMETER_
+# define _GL_UNUSED
 #endif
+/* The name _UNUSED_PARAMETER_ is an earlier spelling, although the name
+   is a misnomer outside of parameter lists.  */
+#define _UNUSED_PARAMETER_ _GL_UNUSED
 ])
+  dnl Preparation for running test programs:
+  dnl Tell glibc to write diagnostics from -D_FORTIFY_SOURCE=2 to stderr, not
+  dnl to /dev/tty, so they can be redirected to log files.  Such diagnostics
+  dnl arise e.g., in the macros gl_PRINTF_DIRECTIVE_N, gl_SNPRINTF_DIRECTIVE_N.
+  LIBC_FATAL_STDERR_=1
+  export LIBC_FATAL_STDERR_
+])
+
+# gl_MODULE_INDICATOR_CONDITION
+# expands to a C preprocessor expression that evaluates to 1 or 0, depending
+# whether a gnulib module that has been requested shall be considered present
+# or not.
+AC_DEFUN([gl_MODULE_INDICATOR_CONDITION], [1])
+
+# gl_MODULE_INDICATOR_SET_VARIABLE([modulename])
+# sets the shell variable that indicates the presence of the given module to
+# a C preprocessor expression that will evaluate to 1.
+AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE],
+[
+  GNULIB_[]m4_translit([[$1]],
+    [abcdefghijklmnopqrstuvwxyz./-],
+    [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=gl_MODULE_INDICATOR_CONDITION
 ])
 
 # gl_MODULE_INDICATOR([modulename])
-# defines a C macro indicating the presence of the given module.
+# defines a C macro indicating the presence of the given module
+# in a location where it can be used.
+#                                             |  Value  |   Value   |
+#                                             | in lib/ | in tests/ |
+# --------------------------------------------+---------+-----------+
+# Module present among main modules:          |    1    |     1     |
+# --------------------------------------------+---------+-----------+
+# Module present among tests-related modules: |    0    |     1     |
+# --------------------------------------------+---------+-----------+
+# Module not present at all:                  |    0    |     0     |
+# --------------------------------------------+---------+-----------+
 AC_DEFUN([gl_MODULE_INDICATOR],
 [
-  AC_DEFINE([GNULIB_]translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [1],
-    [Define to 1 when using the gnulib module ]$1[.])
+  AC_DEFINE_UNQUOTED([GNULIB_]m4_translit([[$1]],
+      [abcdefghijklmnopqrstuvwxyz./-],
+      [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]),
+    [gl_MODULE_INDICATOR_CONDITION],
+    [Define to a C preprocessor expression that evaluates to 1 or 0,
+     depending whether the gnulib module $1 shall be considered present.])
+])
+
+# gl_MODULE_INDICATOR_FOR_TESTS([modulename])
+# defines a C macro indicating the presence of the given module
+# in lib or tests. This is useful to determine whether the module
+# should be tested.
+#                                             |  Value  |   Value   |
+#                                             | in lib/ | in tests/ |
+# --------------------------------------------+---------+-----------+
+# Module present among main modules:          |    1    |     1     |
+# --------------------------------------------+---------+-----------+
+# Module present among tests-related modules: |    1    |     1     |
+# --------------------------------------------+---------+-----------+
+# Module not present at all:                  |    0    |     0     |
+# --------------------------------------------+---------+-----------+
+AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS],
+[
+  AC_DEFINE([GNULIB_TEST_]m4_translit([[$1]],
+      [abcdefghijklmnopqrstuvwxyz./-],
+      [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [1],
+    [Define to 1 when the gnulib module $1 should be tested.])
 ])
 
 # m4_foreach_w
@@ -49,10 +109,25 @@ m4_ifndef([m4_foreach_w],
   [m4_define([m4_foreach_w],
     [m4_foreach([$1], m4_split(m4_normalize([$2]), [ ]), [$3])])])
 
+# AS_VAR_IF(VAR, VALUE, [IF-MATCH], [IF-NOT-MATCH])
+# ----------------------------------------------------
+# Backport of autoconf-2.63b's macro.
+# Remove this macro when we can assume autoconf >= 2.64.
+m4_ifndef([AS_VAR_IF],
+[m4_define([AS_VAR_IF],
+[AS_IF([test x"AS_VAR_GET([$1])" = x""$2], [$3], [$4])])])
+
 # AC_PROG_MKDIR_P
-# is a backport of autoconf-2.60's AC_PROG_MKDIR_P.
-# Remove this macro when we can assume autoconf >= 2.60.
-m4_ifdef([AC_PROG_MKDIR_P], [], [
+# is a backport of autoconf-2.60's AC_PROG_MKDIR_P, with a fix
+# for interoperability with automake-1.9.6 from autoconf-2.62.
+# Remove this macro when we can assume autoconf >= 2.62 or
+# autoconf >= 2.60 && automake >= 1.10.
+m4_ifdef([AC_PROG_MKDIR_P], [
+  dnl For automake-1.9.6 && autoconf < 2.62: Ensure MKDIR_P is AC_SUBSTed.
+  m4_define([AC_PROG_MKDIR_P],
+    m4_defn([AC_PROG_MKDIR_P])[
+    AC_SUBST([MKDIR_P])])], [
+  dnl For autoconf < 2.60: Backport of AC_PROG_MKDIR_P.
   AC_DEFUN_ONCE([AC_PROG_MKDIR_P],
     [AC_REQUIRE([AM_PROG_MKDIR_P])dnl defined by automake
      MKDIR_P='$(mkdir_p)'
@@ -63,6 +138,7 @@ m4_ifdef([AC_PROG_MKDIR_P], [], [
 # so that mixed use of GNU C and GNU C++ and mixed use of Sun C and Sun C++
 # works.
 # This definition can be removed once autoconf >= 2.62 can be assumed.
+m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.62]),[-1],[
 AC_DEFUN([AC_C_RESTRICT],
 [AC_CACHE_CHECK([for C/C++ restrict keyword], [ac_cv_c_restrict],
   [ac_cv_c_restrict=no
@@ -70,13 +146,13 @@ AC_DEFUN([AC_C_RESTRICT],
    for ac_kw in __restrict __restrict__ _Restrict restrict; do
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
       [[typedef int * int_ptr;
-	int foo (int_ptr $ac_kw ip) {
-	return ip[0];
+        int foo (int_ptr $ac_kw ip) {
+        return ip[0];
        }]],
       [[int s[1];
-	int * $ac_kw t = s;
-	t[0] = 0;
-	return foo(t)]])],
+        int * $ac_kw t = s;
+        t[0] = 0;
+        return foo(t)]])],
       [ac_cv_c_restrict=$ac_kw])
      test "$ac_cv_c_restrict" != no && break
    done
@@ -100,6 +176,7 @@ AC_DEFUN([AC_C_RESTRICT],
    *)  AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;;
  esac
 ])
+])
 
 # gl_BIGENDIAN
 # is like AC_C_BIGENDIAN, except that it can be AC_REQUIREd.
diff --git a/gnulib-m4/gnulib-comp.m4 b/gnulib-m4/gnulib-comp.m4
index 39e7d193..21284a4c 100644
--- a/gnulib-m4/gnulib-comp.m4
+++ b/gnulib-m4/gnulib-comp.m4
@@ -1,5 +1,5 @@
 # DO NOT EDIT! GENERATED AUTOMATICALLY!
-# Copyright (C) 2002-2009 Free Software Foundation, Inc.
+# Copyright (C) 2002-2010 Free Software Foundation, Inc.
 #
 # This file is free software, distributed under the terms of the GNU
 # General Public License.  As a special exception to the GNU General
@@ -26,8 +26,983 @@ AC_DEFUN([gl_EARLY],
   m4_pattern_allow([^gl_LTLIBOBJS$])dnl a variable
   AC_REQUIRE([AC_PROG_RANLIB])
   AC_REQUIRE([AM_PROG_CC_C_O])
+  # Code from module alloca-opt:
+  # Code from module alloca-opt-tests:
+  # Code from module arg-nonnull:
+  # Code from module array-mergesort:
+  # Code from module array-mergesort-tests:
+  # Code from module c++defs:
+  # Code from module c-ctype:
+  # Code from module c-ctype-tests:
+  # Code from module c-strcase:
+  # Code from module c-strcase-tests:
+  # Code from module c-strcaseeq:
+  # Code from module configmake:
+  # Code from module environ:
+  # Code from module environ-tests:
+  # Code from module errno:
+  # Code from module errno-tests:
+  # Code from module error:
+  # Code from module exitfail:
+  # Code from module extensions:
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  # Code from module float:
+  # Code from module fpieee:
   AC_REQUIRE([gl_FP_IEEE])
+  # Code from module fpucw:
+  # Code from module frexpl-nolibm:
+  # Code from module frexpl-nolibm-tests:
+  # Code from module fseterr:
+  # Code from module fseterr-tests:
+  # Code from module getpagesize:
+  # Code from module gettext-h:
+  # Code from module gperf:
+  # Code from module havelib:
+  # Code from module iconv:
+  # Code from module iconv-h:
+  # Code from module iconv-h-tests:
+  # Code from module iconv-tests:
+  # Code from module iconv_open:
+  # Code from module include_next:
+  # Code from module inline:
+  # Code from module intprops:
+  # Code from module isnand-nolibm:
+  # Code from module isnand-nolibm-tests:
+  # Code from module isnanf-nolibm:
+  # Code from module isnanf-nolibm-tests:
+  # Code from module isnanl-nolibm:
+  # Code from module isnanl-nolibm-tests:
+  # Code from module localcharset:
+  # Code from module locale:
+  # Code from module locale-tests:
+  # Code from module localename:
+  # Code from module localename-tests:
+  # Code from module lock:
+  # Code from module lock-tests:
+  # Code from module malloc-posix:
+  # Code from module malloca:
+  # Code from module malloca-tests:
+  # Code from module math:
+  # Code from module math-tests:
+  # Code from module mbchar:
+  # Code from module mbiter:
+  # Code from module mbrtowc:
+  # Code from module mbrtowc-tests:
+  # Code from module mbsinit:
+  # Code from module mbsinit-tests:
+  # Code from module mbsnlen:
+  # Code from module memchr:
+  # Code from module memchr-tests:
+  # Code from module memcmp2:
+  # Code from module memxfrm:
+  # Code from module minmax:
+  # Code from module multiarch:
+  # Code from module nocrash:
+  # Code from module printf-frexp:
+  # Code from module printf-frexp-tests:
+  # Code from module printf-frexpl:
+  # Code from module printf-frexpl-tests:
+  # Code from module printf-safe:
+  # Code from module progname:
+  # Code from module putenv:
+  # Code from module relocatable-lib-lgpl:
+  # Code from module setenv:
+  # Code from module setenv-tests:
+  # Code from module signbit:
+  # Code from module signbit-tests:
+  # Code from module size_max:
+  # Code from module stdbool:
+  # Code from module stdbool-tests:
+  # Code from module stddef:
+  # Code from module stddef-tests:
+  # Code from module stdint:
+  # Code from module stdint-tests:
+  # Code from module stdlib:
+  # Code from module stdlib-tests:
+  # Code from module streq:
+  # Code from module strerror:
+  # Code from module strerror-tests:
+  # Code from module striconveh:
+  # Code from module striconveh-tests:
+  # Code from module striconveha:
+  # Code from module striconveha-tests:
+  # Code from module string:
+  # Code from module string-tests:
+  # Code from module strncat:
+  # Code from module strncat-tests:
+  # Code from module thread:
+  # Code from module threadlib:
+  gl_THREADLIB_EARLY
+  # Code from module unicase/base:
+  # Code from module unicase/cased:
+  # Code from module unicase/cased-tests:
+  # Code from module unicase/empty-prefix-context:
+  # Code from module unicase/empty-suffix-context:
+  # Code from module unicase/ignorable:
+  # Code from module unicase/ignorable-tests:
+  # Code from module unicase/locale-language:
+  # Code from module unicase/locale-language-tests:
+  # Code from module unicase/special-casing:
+  # Code from module unicase/tocasefold:
+  # Code from module unicase/tolower:
+  # Code from module unicase/tolower-tests:
+  # Code from module unicase/totitle:
+  # Code from module unicase/totitle-tests:
+  # Code from module unicase/toupper:
+  # Code from module unicase/toupper-tests:
+  # Code from module unicase/u16-casecmp:
+  # Code from module unicase/u16-casecmp-tests:
+  # Code from module unicase/u16-casecoll:
+  # Code from module unicase/u16-casecoll-tests:
+  # Code from module unicase/u16-casefold:
+  # Code from module unicase/u16-casefold-tests:
+  # Code from module unicase/u16-casemap:
+  # Code from module unicase/u16-casexfrm:
+  # Code from module unicase/u16-ct-casefold:
+  # Code from module unicase/u16-ct-tolower:
+  # Code from module unicase/u16-ct-totitle:
+  # Code from module unicase/u16-ct-toupper:
+  # Code from module unicase/u16-is-cased:
+  # Code from module unicase/u16-is-cased-tests:
+  # Code from module unicase/u16-is-casefolded:
+  # Code from module unicase/u16-is-casefolded-tests:
+  # Code from module unicase/u16-is-invariant:
+  # Code from module unicase/u16-is-lowercase:
+  # Code from module unicase/u16-is-lowercase-tests:
+  # Code from module unicase/u16-is-titlecase:
+  # Code from module unicase/u16-is-titlecase-tests:
+  # Code from module unicase/u16-is-uppercase:
+  # Code from module unicase/u16-is-uppercase-tests:
+  # Code from module unicase/u16-tolower:
+  # Code from module unicase/u16-tolower-tests:
+  # Code from module unicase/u16-totitle:
+  # Code from module unicase/u16-totitle-tests:
+  # Code from module unicase/u16-toupper:
+  # Code from module unicase/u16-toupper-tests:
+  # Code from module unicase/u32-casecmp:
+  # Code from module unicase/u32-casecmp-tests:
+  # Code from module unicase/u32-casecoll:
+  # Code from module unicase/u32-casecoll-tests:
+  # Code from module unicase/u32-casefold:
+  # Code from module unicase/u32-casefold-tests:
+  # Code from module unicase/u32-casemap:
+  # Code from module unicase/u32-casexfrm:
+  # Code from module unicase/u32-ct-casefold:
+  # Code from module unicase/u32-ct-tolower:
+  # Code from module unicase/u32-ct-totitle:
+  # Code from module unicase/u32-ct-toupper:
+  # Code from module unicase/u32-is-cased:
+  # Code from module unicase/u32-is-cased-tests:
+  # Code from module unicase/u32-is-casefolded:
+  # Code from module unicase/u32-is-casefolded-tests:
+  # Code from module unicase/u32-is-invariant:
+  # Code from module unicase/u32-is-lowercase:
+  # Code from module unicase/u32-is-lowercase-tests:
+  # Code from module unicase/u32-is-titlecase:
+  # Code from module unicase/u32-is-titlecase-tests:
+  # Code from module unicase/u32-is-uppercase:
+  # Code from module unicase/u32-is-uppercase-tests:
+  # Code from module unicase/u32-tolower:
+  # Code from module unicase/u32-tolower-tests:
+  # Code from module unicase/u32-totitle:
+  # Code from module unicase/u32-totitle-tests:
+  # Code from module unicase/u32-toupper:
+  # Code from module unicase/u32-toupper-tests:
+  # Code from module unicase/u8-casecmp:
+  # Code from module unicase/u8-casecmp-tests:
+  # Code from module unicase/u8-casecoll:
+  # Code from module unicase/u8-casecoll-tests:
+  # Code from module unicase/u8-casefold:
+  # Code from module unicase/u8-casefold-tests:
+  # Code from module unicase/u8-casemap:
+  # Code from module unicase/u8-casexfrm:
+  # Code from module unicase/u8-ct-casefold:
+  # Code from module unicase/u8-ct-tolower:
+  # Code from module unicase/u8-ct-totitle:
+  # Code from module unicase/u8-ct-toupper:
+  # Code from module unicase/u8-is-cased:
+  # Code from module unicase/u8-is-cased-tests:
+  # Code from module unicase/u8-is-casefolded:
+  # Code from module unicase/u8-is-casefolded-tests:
+  # Code from module unicase/u8-is-invariant:
+  # Code from module unicase/u8-is-lowercase:
+  # Code from module unicase/u8-is-lowercase-tests:
+  # Code from module unicase/u8-is-titlecase:
+  # Code from module unicase/u8-is-titlecase-tests:
+  # Code from module unicase/u8-is-uppercase:
+  # Code from module unicase/u8-is-uppercase-tests:
+  # Code from module unicase/u8-tolower:
+  # Code from module unicase/u8-tolower-tests:
+  # Code from module unicase/u8-totitle:
+  # Code from module unicase/u8-totitle-tests:
+  # Code from module unicase/u8-toupper:
+  # Code from module unicase/u8-toupper-tests:
+  # Code from module unicase/ulc-casecmp:
+  # Code from module unicase/ulc-casecmp-tests:
+  # Code from module unicase/ulc-casecoll:
+  # Code from module unicase/ulc-casecoll-tests:
+  # Code from module unicase/ulc-casexfrm:
+  # Code from module uniconv/base:
+  # Code from module uniconv/u16-conv-from-enc:
+  # Code from module uniconv/u16-conv-from-enc-tests:
+  # Code from module uniconv/u16-conv-to-enc:
+  # Code from module uniconv/u16-conv-to-enc-tests:
+  # Code from module uniconv/u16-strconv-from-enc:
+  # Code from module uniconv/u16-strconv-from-enc-tests:
+  # Code from module uniconv/u16-strconv-from-locale:
+  # Code from module uniconv/u16-strconv-to-enc:
+  # Code from module uniconv/u16-strconv-to-enc-tests:
+  # Code from module uniconv/u16-strconv-to-locale:
+  # Code from module uniconv/u32-conv-from-enc:
+  # Code from module uniconv/u32-conv-from-enc-tests:
+  # Code from module uniconv/u32-conv-to-enc:
+  # Code from module uniconv/u32-conv-to-enc-tests:
+  # Code from module uniconv/u32-strconv-from-enc:
+  # Code from module uniconv/u32-strconv-from-enc-tests:
+  # Code from module uniconv/u32-strconv-from-locale:
+  # Code from module uniconv/u32-strconv-to-enc:
+  # Code from module uniconv/u32-strconv-to-enc-tests:
+  # Code from module uniconv/u32-strconv-to-locale:
+  # Code from module uniconv/u8-conv-from-enc:
+  # Code from module uniconv/u8-conv-from-enc-tests:
+  # Code from module uniconv/u8-conv-to-enc:
+  # Code from module uniconv/u8-conv-to-enc-tests:
+  # Code from module uniconv/u8-strconv-from-enc:
+  # Code from module uniconv/u8-strconv-from-enc-tests:
+  # Code from module uniconv/u8-strconv-from-locale:
+  # Code from module uniconv/u8-strconv-to-enc:
+  # Code from module uniconv/u8-strconv-to-enc-tests:
+  # Code from module uniconv/u8-strconv-to-locale:
+  # Code from module unictype/base:
+  # Code from module unictype/bidicategory-all:
+  # Code from module unictype/bidicategory-byname:
+  # Code from module unictype/bidicategory-byname-tests:
+  # Code from module unictype/bidicategory-name:
+  # Code from module unictype/bidicategory-name-tests:
+  # Code from module unictype/bidicategory-of:
+  # Code from module unictype/bidicategory-of-tests:
+  # Code from module unictype/bidicategory-test:
+  # Code from module unictype/bidicategory-test-tests:
+  # Code from module unictype/block-all:
+  # Code from module unictype/block-list:
+  # Code from module unictype/block-list-tests:
+  # Code from module unictype/block-of:
+  # Code from module unictype/block-of-tests:
+  # Code from module unictype/block-test:
+  # Code from module unictype/block-test-tests:
+  # Code from module unictype/category-C:
+  # Code from module unictype/category-C-tests:
+  # Code from module unictype/category-Cc:
+  # Code from module unictype/category-Cc-tests:
+  # Code from module unictype/category-Cf:
+  # Code from module unictype/category-Cf-tests:
+  # Code from module unictype/category-Cn:
+  # Code from module unictype/category-Cn-tests:
+  # Code from module unictype/category-Co:
+  # Code from module unictype/category-Co-tests:
+  # Code from module unictype/category-Cs:
+  # Code from module unictype/category-Cs-tests:
+  # Code from module unictype/category-L:
+  # Code from module unictype/category-L-tests:
+  # Code from module unictype/category-Ll:
+  # Code from module unictype/category-Ll-tests:
+  # Code from module unictype/category-Lm:
+  # Code from module unictype/category-Lm-tests:
+  # Code from module unictype/category-Lo:
+  # Code from module unictype/category-Lo-tests:
+  # Code from module unictype/category-Lt:
+  # Code from module unictype/category-Lt-tests:
+  # Code from module unictype/category-Lu:
+  # Code from module unictype/category-Lu-tests:
+  # Code from module unictype/category-M:
+  # Code from module unictype/category-M-tests:
+  # Code from module unictype/category-Mc:
+  # Code from module unictype/category-Mc-tests:
+  # Code from module unictype/category-Me:
+  # Code from module unictype/category-Me-tests:
+  # Code from module unictype/category-Mn:
+  # Code from module unictype/category-Mn-tests:
+  # Code from module unictype/category-N:
+  # Code from module unictype/category-N-tests:
+  # Code from module unictype/category-Nd:
+  # Code from module unictype/category-Nd-tests:
+  # Code from module unictype/category-Nl:
+  # Code from module unictype/category-Nl-tests:
+  # Code from module unictype/category-No:
+  # Code from module unictype/category-No-tests:
+  # Code from module unictype/category-P:
+  # Code from module unictype/category-P-tests:
+  # Code from module unictype/category-Pc:
+  # Code from module unictype/category-Pc-tests:
+  # Code from module unictype/category-Pd:
+  # Code from module unictype/category-Pd-tests:
+  # Code from module unictype/category-Pe:
+  # Code from module unictype/category-Pe-tests:
+  # Code from module unictype/category-Pf:
+  # Code from module unictype/category-Pf-tests:
+  # Code from module unictype/category-Pi:
+  # Code from module unictype/category-Pi-tests:
+  # Code from module unictype/category-Po:
+  # Code from module unictype/category-Po-tests:
+  # Code from module unictype/category-Ps:
+  # Code from module unictype/category-Ps-tests:
+  # Code from module unictype/category-S:
+  # Code from module unictype/category-S-tests:
+  # Code from module unictype/category-Sc:
+  # Code from module unictype/category-Sc-tests:
+  # Code from module unictype/category-Sk:
+  # Code from module unictype/category-Sk-tests:
+  # Code from module unictype/category-Sm:
+  # Code from module unictype/category-Sm-tests:
+  # Code from module unictype/category-So:
+  # Code from module unictype/category-So-tests:
+  # Code from module unictype/category-Z:
+  # Code from module unictype/category-Z-tests:
+  # Code from module unictype/category-Zl:
+  # Code from module unictype/category-Zl-tests:
+  # Code from module unictype/category-Zp:
+  # Code from module unictype/category-Zp-tests:
+  # Code from module unictype/category-Zs:
+  # Code from module unictype/category-Zs-tests:
+  # Code from module unictype/category-all:
+  # Code from module unictype/category-and:
+  # Code from module unictype/category-and-not:
+  # Code from module unictype/category-and-not-tests:
+  # Code from module unictype/category-and-tests:
+  # Code from module unictype/category-byname:
+  # Code from module unictype/category-byname-tests:
+  # Code from module unictype/category-name:
+  # Code from module unictype/category-name-tests:
+  # Code from module unictype/category-none:
+  # Code from module unictype/category-none-tests:
+  # Code from module unictype/category-of:
+  # Code from module unictype/category-of-tests:
+  # Code from module unictype/category-or:
+  # Code from module unictype/category-or-tests:
+  # Code from module unictype/category-test:
+  # Code from module unictype/category-test-withtable:
+  # Code from module unictype/category-test-withtable-tests:
+  # Code from module unictype/combining-class:
+  # Code from module unictype/combining-class-tests:
+  # Code from module unictype/ctype-alnum:
+  # Code from module unictype/ctype-alnum-tests:
+  # Code from module unictype/ctype-alpha:
+  # Code from module unictype/ctype-alpha-tests:
+  # Code from module unictype/ctype-blank:
+  # Code from module unictype/ctype-blank-tests:
+  # Code from module unictype/ctype-cntrl:
+  # Code from module unictype/ctype-cntrl-tests:
+  # Code from module unictype/ctype-digit:
+  # Code from module unictype/ctype-digit-tests:
+  # Code from module unictype/ctype-graph:
+  # Code from module unictype/ctype-graph-tests:
+  # Code from module unictype/ctype-lower:
+  # Code from module unictype/ctype-lower-tests:
+  # Code from module unictype/ctype-print:
+  # Code from module unictype/ctype-print-tests:
+  # Code from module unictype/ctype-punct:
+  # Code from module unictype/ctype-punct-tests:
+  # Code from module unictype/ctype-space:
+  # Code from module unictype/ctype-space-tests:
+  # Code from module unictype/ctype-upper:
+  # Code from module unictype/ctype-upper-tests:
+  # Code from module unictype/ctype-xdigit:
+  # Code from module unictype/ctype-xdigit-tests:
+  # Code from module unictype/decimal-digit:
+  # Code from module unictype/decimal-digit-tests:
+  # Code from module unictype/digit:
+  # Code from module unictype/digit-tests:
+  # Code from module unictype/mirror:
+  # Code from module unictype/mirror-tests:
+  # Code from module unictype/numeric:
+  # Code from module unictype/numeric-tests:
+  # Code from module unictype/property-all:
+  # Code from module unictype/property-alphabetic:
+  # Code from module unictype/property-alphabetic-tests:
+  # Code from module unictype/property-ascii-hex-digit:
+  # Code from module unictype/property-ascii-hex-digit-tests:
+  # Code from module unictype/property-bidi-arabic-digit:
+  # Code from module unictype/property-bidi-arabic-digit-tests:
+  # Code from module unictype/property-bidi-arabic-right-to-left:
+  # Code from module unictype/property-bidi-arabic-right-to-left-tests:
+  # Code from module unictype/property-bidi-block-separator:
+  # Code from module unictype/property-bidi-block-separator-tests:
+  # Code from module unictype/property-bidi-boundary-neutral:
+  # Code from module unictype/property-bidi-boundary-neutral-tests:
+  # Code from module unictype/property-bidi-common-separator:
+  # Code from module unictype/property-bidi-common-separator-tests:
+  # Code from module unictype/property-bidi-control:
+  # Code from module unictype/property-bidi-control-tests:
+  # Code from module unictype/property-bidi-embedding-or-override:
+  # Code from module unictype/property-bidi-embedding-or-override-tests:
+  # Code from module unictype/property-bidi-eur-num-separator:
+  # Code from module unictype/property-bidi-eur-num-separator-tests:
+  # Code from module unictype/property-bidi-eur-num-terminator:
+  # Code from module unictype/property-bidi-eur-num-terminator-tests:
+  # Code from module unictype/property-bidi-european-digit:
+  # Code from module unictype/property-bidi-european-digit-tests:
+  # Code from module unictype/property-bidi-hebrew-right-to-left:
+  # Code from module unictype/property-bidi-hebrew-right-to-left-tests:
+  # Code from module unictype/property-bidi-left-to-right:
+  # Code from module unictype/property-bidi-left-to-right-tests:
+  # Code from module unictype/property-bidi-non-spacing-mark:
+  # Code from module unictype/property-bidi-non-spacing-mark-tests:
+  # Code from module unictype/property-bidi-other-neutral:
+  # Code from module unictype/property-bidi-other-neutral-tests:
+  # Code from module unictype/property-bidi-pdf:
+  # Code from module unictype/property-bidi-pdf-tests:
+  # Code from module unictype/property-bidi-segment-separator:
+  # Code from module unictype/property-bidi-segment-separator-tests:
+  # Code from module unictype/property-bidi-whitespace:
+  # Code from module unictype/property-bidi-whitespace-tests:
+  # Code from module unictype/property-byname:
+  # Code from module unictype/property-byname-tests:
+  # Code from module unictype/property-combining:
+  # Code from module unictype/property-combining-tests:
+  # Code from module unictype/property-composite:
+  # Code from module unictype/property-composite-tests:
+  # Code from module unictype/property-currency-symbol:
+  # Code from module unictype/property-currency-symbol-tests:
+  # Code from module unictype/property-dash:
+  # Code from module unictype/property-dash-tests:
+  # Code from module unictype/property-decimal-digit:
+  # Code from module unictype/property-decimal-digit-tests:
+  # Code from module unictype/property-default-ignorable-code-point:
+  # Code from module unictype/property-default-ignorable-code-point-tests:
+  # Code from module unictype/property-deprecated:
+  # Code from module unictype/property-deprecated-tests:
+  # Code from module unictype/property-diacritic:
+  # Code from module unictype/property-diacritic-tests:
+  # Code from module unictype/property-extender:
+  # Code from module unictype/property-extender-tests:
+  # Code from module unictype/property-format-control:
+  # Code from module unictype/property-format-control-tests:
+  # Code from module unictype/property-grapheme-base:
+  # Code from module unictype/property-grapheme-base-tests:
+  # Code from module unictype/property-grapheme-extend:
+  # Code from module unictype/property-grapheme-extend-tests:
+  # Code from module unictype/property-grapheme-link:
+  # Code from module unictype/property-grapheme-link-tests:
+  # Code from module unictype/property-hex-digit:
+  # Code from module unictype/property-hex-digit-tests:
+  # Code from module unictype/property-hyphen:
+  # Code from module unictype/property-hyphen-tests:
+  # Code from module unictype/property-id-continue:
+  # Code from module unictype/property-id-continue-tests:
+  # Code from module unictype/property-id-start:
+  # Code from module unictype/property-id-start-tests:
+  # Code from module unictype/property-ideographic:
+  # Code from module unictype/property-ideographic-tests:
+  # Code from module unictype/property-ids-binary-operator:
+  # Code from module unictype/property-ids-binary-operator-tests:
+  # Code from module unictype/property-ids-trinary-operator:
+  # Code from module unictype/property-ids-trinary-operator-tests:
+  # Code from module unictype/property-ignorable-control:
+  # Code from module unictype/property-ignorable-control-tests:
+  # Code from module unictype/property-iso-control:
+  # Code from module unictype/property-iso-control-tests:
+  # Code from module unictype/property-join-control:
+  # Code from module unictype/property-join-control-tests:
+  # Code from module unictype/property-left-of-pair:
+  # Code from module unictype/property-left-of-pair-tests:
+  # Code from module unictype/property-line-separator:
+  # Code from module unictype/property-line-separator-tests:
+  # Code from module unictype/property-logical-order-exception:
+  # Code from module unictype/property-logical-order-exception-tests:
+  # Code from module unictype/property-lowercase:
+  # Code from module unictype/property-lowercase-tests:
+  # Code from module unictype/property-math:
+  # Code from module unictype/property-math-tests:
+  # Code from module unictype/property-non-break:
+  # Code from module unictype/property-non-break-tests:
+  # Code from module unictype/property-not-a-character:
+  # Code from module unictype/property-not-a-character-tests:
+  # Code from module unictype/property-numeric:
+  # Code from module unictype/property-numeric-tests:
+  # Code from module unictype/property-other-alphabetic:
+  # Code from module unictype/property-other-alphabetic-tests:
+  # Code from module unictype/property-other-default-ignorable-code-point:
+  # Code from module unictype/property-other-default-ignorable-code-point-tests:
+  # Code from module unictype/property-other-grapheme-extend:
+  # Code from module unictype/property-other-grapheme-extend-tests:
+  # Code from module unictype/property-other-id-continue:
+  # Code from module unictype/property-other-id-continue-tests:
+  # Code from module unictype/property-other-id-start:
+  # Code from module unictype/property-other-id-start-tests:
+  # Code from module unictype/property-other-lowercase:
+  # Code from module unictype/property-other-lowercase-tests:
+  # Code from module unictype/property-other-math:
+  # Code from module unictype/property-other-math-tests:
+  # Code from module unictype/property-other-uppercase:
+  # Code from module unictype/property-other-uppercase-tests:
+  # Code from module unictype/property-paired-punctuation:
+  # Code from module unictype/property-paired-punctuation-tests:
+  # Code from module unictype/property-paragraph-separator:
+  # Code from module unictype/property-paragraph-separator-tests:
+  # Code from module unictype/property-pattern-syntax:
+  # Code from module unictype/property-pattern-syntax-tests:
+  # Code from module unictype/property-pattern-white-space:
+  # Code from module unictype/property-pattern-white-space-tests:
+  # Code from module unictype/property-private-use:
+  # Code from module unictype/property-private-use-tests:
+  # Code from module unictype/property-punctuation:
+  # Code from module unictype/property-punctuation-tests:
+  # Code from module unictype/property-quotation-mark:
+  # Code from module unictype/property-quotation-mark-tests:
+  # Code from module unictype/property-radical:
+  # Code from module unictype/property-radical-tests:
+  # Code from module unictype/property-sentence-terminal:
+  # Code from module unictype/property-sentence-terminal-tests:
+  # Code from module unictype/property-soft-dotted:
+  # Code from module unictype/property-soft-dotted-tests:
+  # Code from module unictype/property-space:
+  # Code from module unictype/property-space-tests:
+  # Code from module unictype/property-terminal-punctuation:
+  # Code from module unictype/property-terminal-punctuation-tests:
+  # Code from module unictype/property-test:
+  # Code from module unictype/property-test-tests:
+  # Code from module unictype/property-titlecase:
+  # Code from module unictype/property-titlecase-tests:
+  # Code from module unictype/property-unassigned-code-value:
+  # Code from module unictype/property-unassigned-code-value-tests:
+  # Code from module unictype/property-unified-ideograph:
+  # Code from module unictype/property-unified-ideograph-tests:
+  # Code from module unictype/property-uppercase:
+  # Code from module unictype/property-uppercase-tests:
+  # Code from module unictype/property-variation-selector:
+  # Code from module unictype/property-variation-selector-tests:
+  # Code from module unictype/property-white-space:
+  # Code from module unictype/property-white-space-tests:
+  # Code from module unictype/property-xid-continue:
+  # Code from module unictype/property-xid-continue-tests:
+  # Code from module unictype/property-xid-start:
+  # Code from module unictype/property-xid-start-tests:
+  # Code from module unictype/property-zero-width:
+  # Code from module unictype/property-zero-width-tests:
+  # Code from module unictype/scripts:
+  # Code from module unictype/scripts-all:
+  # Code from module unictype/scripts-tests:
+  # Code from module unictype/syntax-c-ident:
+  # Code from module unictype/syntax-c-ident-tests:
+  # Code from module unictype/syntax-c-whitespace:
+  # Code from module unictype/syntax-c-whitespace-tests:
+  # Code from module unictype/syntax-java-ident:
+  # Code from module unictype/syntax-java-ident-tests:
+  # Code from module unictype/syntax-java-whitespace:
+  # Code from module unictype/syntax-java-whitespace-tests:
+  # Code from module unilbrk/base:
+  # Code from module unilbrk/tables:
+  # Code from module unilbrk/u16-possible-linebreaks:
+  # Code from module unilbrk/u16-possible-linebreaks-tests:
+  # Code from module unilbrk/u16-width-linebreaks:
+  # Code from module unilbrk/u16-width-linebreaks-tests:
+  # Code from module unilbrk/u32-possible-linebreaks:
+  # Code from module unilbrk/u32-possible-linebreaks-tests:
+  # Code from module unilbrk/u32-width-linebreaks:
+  # Code from module unilbrk/u32-width-linebreaks-tests:
+  # Code from module unilbrk/u8-possible-linebreaks:
+  # Code from module unilbrk/u8-possible-linebreaks-tests:
+  # Code from module unilbrk/u8-width-linebreaks:
+  # Code from module unilbrk/u8-width-linebreaks-tests:
+  # Code from module unilbrk/ulc-common:
+  # Code from module unilbrk/ulc-possible-linebreaks:
+  # Code from module unilbrk/ulc-possible-linebreaks-tests:
+  # Code from module unilbrk/ulc-width-linebreaks:
+  # Code from module unilbrk/ulc-width-linebreaks-tests:
+  # Code from module uniname/base:
+  # Code from module uniname/uniname:
+  # Code from module uniname/uniname-tests:
+  # Code from module uninorm/base:
+  # Code from module uninorm/canonical-decomposition:
+  # Code from module uninorm/canonical-decomposition-tests:
+  # Code from module uninorm/compat-decomposition:
+  # Code from module uninorm/compat-decomposition-tests:
+  # Code from module uninorm/composition:
+  # Code from module uninorm/composition-tests:
+  # Code from module uninorm/decompose-internal:
+  # Code from module uninorm/decomposing-form:
+  # Code from module uninorm/decomposing-form-tests:
+  # Code from module uninorm/decomposition:
+  # Code from module uninorm/decomposition-table:
+  # Code from module uninorm/decomposition-tests:
+  # Code from module uninorm/filter:
+  # Code from module uninorm/filter-tests:
+  # Code from module uninorm/nfc:
+  # Code from module uninorm/nfc-tests:
+  # Code from module uninorm/nfd:
+  # Code from module uninorm/nfd-tests:
+  # Code from module uninorm/nfkc:
+  # Code from module uninorm/nfkc-tests:
+  # Code from module uninorm/nfkd:
+  # Code from module uninorm/nfkd-tests:
+  # Code from module uninorm/u16-normalize:
+  # Code from module uninorm/u16-normcmp:
+  # Code from module uninorm/u16-normcmp-tests:
+  # Code from module uninorm/u16-normcoll:
+  # Code from module uninorm/u16-normcoll-tests:
+  # Code from module uninorm/u16-normxfrm:
+  # Code from module uninorm/u32-normalize:
+  # Code from module uninorm/u32-normcmp:
+  # Code from module uninorm/u32-normcmp-tests:
+  # Code from module uninorm/u32-normcoll:
+  # Code from module uninorm/u32-normcoll-tests:
+  # Code from module uninorm/u32-normxfrm:
+  # Code from module uninorm/u8-normalize:
+  # Code from module uninorm/u8-normcmp:
+  # Code from module uninorm/u8-normcmp-tests:
+  # Code from module uninorm/u8-normcoll:
+  # Code from module uninorm/u8-normcoll-tests:
+  # Code from module uninorm/u8-normxfrm:
+  # Code from module unistd:
+  # Code from module unistd-tests:
+  # Code from module unistdio/base:
+  # Code from module unistdio/u-printf-args:
+  # Code from module unistdio/u16-asnprintf:
+  # Code from module unistdio/u16-asnprintf-tests:
+  # Code from module unistdio/u16-asprintf:
+  # Code from module unistdio/u16-printf-parse:
+  # Code from module unistdio/u16-snprintf:
+  # Code from module unistdio/u16-sprintf:
+  # Code from module unistdio/u16-u16-asnprintf:
+  # Code from module unistdio/u16-u16-asprintf:
+  # Code from module unistdio/u16-u16-snprintf:
+  # Code from module unistdio/u16-u16-sprintf:
+  # Code from module unistdio/u16-u16-vasnprintf:
+  # Code from module unistdio/u16-u16-vasprintf:
+  # Code from module unistdio/u16-u16-vsnprintf:
+  # Code from module unistdio/u16-u16-vsprintf:
+  # Code from module unistdio/u16-vasnprintf:
+  # Code from module unistdio/u16-vasnprintf-tests:
+  # Code from module unistdio/u16-vasprintf:
+  # Code from module unistdio/u16-vasprintf-tests:
+  # Code from module unistdio/u16-vsnprintf:
+  # Code from module unistdio/u16-vsnprintf-tests:
+  # Code from module unistdio/u16-vsprintf:
+  # Code from module unistdio/u16-vsprintf-tests:
+  # Code from module unistdio/u32-asnprintf:
+  # Code from module unistdio/u32-asnprintf-tests:
+  # Code from module unistdio/u32-asprintf:
+  # Code from module unistdio/u32-printf-parse:
+  # Code from module unistdio/u32-snprintf:
+  # Code from module unistdio/u32-sprintf:
+  # Code from module unistdio/u32-u32-asnprintf:
+  # Code from module unistdio/u32-u32-asprintf:
+  # Code from module unistdio/u32-u32-snprintf:
+  # Code from module unistdio/u32-u32-sprintf:
+  # Code from module unistdio/u32-u32-vasnprintf:
+  # Code from module unistdio/u32-u32-vasprintf:
+  # Code from module unistdio/u32-u32-vsnprintf:
+  # Code from module unistdio/u32-u32-vsprintf:
+  # Code from module unistdio/u32-vasnprintf:
+  # Code from module unistdio/u32-vasnprintf-tests:
+  # Code from module unistdio/u32-vasprintf:
+  # Code from module unistdio/u32-vasprintf-tests:
+  # Code from module unistdio/u32-vsnprintf:
+  # Code from module unistdio/u32-vsnprintf-tests:
+  # Code from module unistdio/u32-vsprintf:
+  # Code from module unistdio/u32-vsprintf-tests:
+  # Code from module unistdio/u8-asnprintf:
+  # Code from module unistdio/u8-asnprintf-tests:
+  # Code from module unistdio/u8-asprintf:
+  # Code from module unistdio/u8-printf-parse:
+  # Code from module unistdio/u8-snprintf:
+  # Code from module unistdio/u8-sprintf:
+  # Code from module unistdio/u8-u8-asnprintf:
+  # Code from module unistdio/u8-u8-asprintf:
+  # Code from module unistdio/u8-u8-snprintf:
+  # Code from module unistdio/u8-u8-sprintf:
+  # Code from module unistdio/u8-u8-vasnprintf:
+  # Code from module unistdio/u8-u8-vasprintf:
+  # Code from module unistdio/u8-u8-vsnprintf:
+  # Code from module unistdio/u8-u8-vsprintf:
+  # Code from module unistdio/u8-vasnprintf:
+  # Code from module unistdio/u8-vasnprintf-tests:
+  # Code from module unistdio/u8-vasprintf:
+  # Code from module unistdio/u8-vasprintf-tests:
+  # Code from module unistdio/u8-vsnprintf:
+  # Code from module unistdio/u8-vsnprintf-tests:
+  # Code from module unistdio/u8-vsprintf:
+  # Code from module unistdio/u8-vsprintf-tests:
+  # Code from module unistdio/ulc-asnprintf:
+  # Code from module unistdio/ulc-asnprintf-tests:
+  # Code from module unistdio/ulc-asprintf:
+  # Code from module unistdio/ulc-fprintf:
+  # Code from module unistdio/ulc-printf-parse:
+  # Code from module unistdio/ulc-snprintf:
+  # Code from module unistdio/ulc-sprintf:
+  # Code from module unistdio/ulc-vasnprintf:
+  # Code from module unistdio/ulc-vasnprintf-tests:
+  # Code from module unistdio/ulc-vasprintf:
+  # Code from module unistdio/ulc-vasprintf-tests:
+  # Code from module unistdio/ulc-vfprintf:
+  # Code from module unistdio/ulc-vsnprintf:
+  # Code from module unistdio/ulc-vsnprintf-tests:
+  # Code from module unistdio/ulc-vsprintf:
+  # Code from module unistdio/ulc-vsprintf-tests:
+  # Code from module unistr/base:
+  # Code from module unistr/u16-check:
+  # Code from module unistr/u16-check-tests:
+  # Code from module unistr/u16-chr:
+  # Code from module unistr/u16-chr-tests:
+  # Code from module unistr/u16-cmp:
+  # Code from module unistr/u16-cmp-tests:
+  # Code from module unistr/u16-cmp2:
+  # Code from module unistr/u16-cmp2-tests:
+  # Code from module unistr/u16-cpy:
+  # Code from module unistr/u16-cpy-alloc:
+  # Code from module unistr/u16-cpy-alloc-tests:
+  # Code from module unistr/u16-cpy-tests:
+  # Code from module unistr/u16-endswith:
+  # Code from module unistr/u16-mblen:
+  # Code from module unistr/u16-mblen-tests:
+  # Code from module unistr/u16-mbsnlen:
+  # Code from module unistr/u16-mbsnlen-tests:
+  # Code from module unistr/u16-mbtouc:
+  # Code from module unistr/u16-mbtouc-tests:
+  # Code from module unistr/u16-mbtouc-unsafe:
+  # Code from module unistr/u16-mbtouc-unsafe-tests:
+  # Code from module unistr/u16-mbtoucr:
+  # Code from module unistr/u16-mbtoucr-tests:
+  # Code from module unistr/u16-move:
+  # Code from module unistr/u16-move-tests:
+  # Code from module unistr/u16-next:
+  # Code from module unistr/u16-next-tests:
+  # Code from module unistr/u16-prev:
+  # Code from module unistr/u16-prev-tests:
+  # Code from module unistr/u16-set:
+  # Code from module unistr/u16-set-tests:
+  # Code from module unistr/u16-startswith:
+  # Code from module unistr/u16-stpcpy:
+  # Code from module unistr/u16-stpcpy-tests:
+  # Code from module unistr/u16-stpncpy:
+  # Code from module unistr/u16-stpncpy-tests:
+  # Code from module unistr/u16-strcat:
+  # Code from module unistr/u16-strcat-tests:
+  # Code from module unistr/u16-strchr:
+  # Code from module unistr/u16-strcmp:
+  # Code from module unistr/u16-strcmp-tests:
+  # Code from module unistr/u16-strcoll:
+  # Code from module unistr/u16-strcoll-tests:
+  # Code from module unistr/u16-strcpy:
+  # Code from module unistr/u16-strcpy-tests:
+  # Code from module unistr/u16-strcspn:
+  # Code from module unistr/u16-strdup:
+  # Code from module unistr/u16-strdup-tests:
+  # Code from module unistr/u16-strlen:
+  # Code from module unistr/u16-strlen-tests:
+  # Code from module unistr/u16-strmblen:
+  # Code from module unistr/u16-strmblen-tests:
+  # Code from module unistr/u16-strmbtouc:
+  # Code from module unistr/u16-strmbtouc-tests:
+  # Code from module unistr/u16-strncat:
+  # Code from module unistr/u16-strncat-tests:
+  # Code from module unistr/u16-strncmp:
+  # Code from module unistr/u16-strncmp-tests:
+  # Code from module unistr/u16-strncpy:
+  # Code from module unistr/u16-strncpy-tests:
+  # Code from module unistr/u16-strnlen:
+  # Code from module unistr/u16-strnlen-tests:
+  # Code from module unistr/u16-strpbrk:
+  # Code from module unistr/u16-strrchr:
+  # Code from module unistr/u16-strspn:
+  # Code from module unistr/u16-strstr:
+  # Code from module unistr/u16-strtok:
+  # Code from module unistr/u16-to-u32:
+  # Code from module unistr/u16-to-u32-tests:
+  # Code from module unistr/u16-to-u8:
+  # Code from module unistr/u16-to-u8-tests:
+  # Code from module unistr/u16-uctomb:
+  # Code from module unistr/u16-uctomb-tests:
+  # Code from module unistr/u32-check:
+  # Code from module unistr/u32-check-tests:
+  # Code from module unistr/u32-chr:
+  # Code from module unistr/u32-chr-tests:
+  # Code from module unistr/u32-cmp:
+  # Code from module unistr/u32-cmp-tests:
+  # Code from module unistr/u32-cmp2:
+  # Code from module unistr/u32-cmp2-tests:
+  # Code from module unistr/u32-cpy:
+  # Code from module unistr/u32-cpy-alloc:
+  # Code from module unistr/u32-cpy-alloc-tests:
+  # Code from module unistr/u32-cpy-tests:
+  # Code from module unistr/u32-endswith:
+  # Code from module unistr/u32-mblen:
+  # Code from module unistr/u32-mblen-tests:
+  # Code from module unistr/u32-mbsnlen:
+  # Code from module unistr/u32-mbsnlen-tests:
+  # Code from module unistr/u32-mbtouc:
+  # Code from module unistr/u32-mbtouc-tests:
+  # Code from module unistr/u32-mbtouc-unsafe:
+  # Code from module unistr/u32-mbtouc-unsafe-tests:
+  # Code from module unistr/u32-mbtoucr:
+  # Code from module unistr/u32-mbtoucr-tests:
+  # Code from module unistr/u32-move:
+  # Code from module unistr/u32-move-tests:
+  # Code from module unistr/u32-next:
+  # Code from module unistr/u32-next-tests:
+  # Code from module unistr/u32-prev:
+  # Code from module unistr/u32-prev-tests:
+  # Code from module unistr/u32-set:
+  # Code from module unistr/u32-set-tests:
+  # Code from module unistr/u32-startswith:
+  # Code from module unistr/u32-stpcpy:
+  # Code from module unistr/u32-stpcpy-tests:
+  # Code from module unistr/u32-stpncpy:
+  # Code from module unistr/u32-stpncpy-tests:
+  # Code from module unistr/u32-strcat:
+  # Code from module unistr/u32-strcat-tests:
+  # Code from module unistr/u32-strchr:
+  # Code from module unistr/u32-strcmp:
+  # Code from module unistr/u32-strcmp-tests:
+  # Code from module unistr/u32-strcoll:
+  # Code from module unistr/u32-strcoll-tests:
+  # Code from module unistr/u32-strcpy:
+  # Code from module unistr/u32-strcpy-tests:
+  # Code from module unistr/u32-strcspn:
+  # Code from module unistr/u32-strdup:
+  # Code from module unistr/u32-strdup-tests:
+  # Code from module unistr/u32-strlen:
+  # Code from module unistr/u32-strlen-tests:
+  # Code from module unistr/u32-strmblen:
+  # Code from module unistr/u32-strmblen-tests:
+  # Code from module unistr/u32-strmbtouc:
+  # Code from module unistr/u32-strmbtouc-tests:
+  # Code from module unistr/u32-strncat:
+  # Code from module unistr/u32-strncat-tests:
+  # Code from module unistr/u32-strncmp:
+  # Code from module unistr/u32-strncmp-tests:
+  # Code from module unistr/u32-strncpy:
+  # Code from module unistr/u32-strncpy-tests:
+  # Code from module unistr/u32-strnlen:
+  # Code from module unistr/u32-strnlen-tests:
+  # Code from module unistr/u32-strpbrk:
+  # Code from module unistr/u32-strrchr:
+  # Code from module unistr/u32-strspn:
+  # Code from module unistr/u32-strstr:
+  # Code from module unistr/u32-strtok:
+  # Code from module unistr/u32-to-u16:
+  # Code from module unistr/u32-to-u16-tests:
+  # Code from module unistr/u32-to-u8:
+  # Code from module unistr/u32-to-u8-tests:
+  # Code from module unistr/u32-uctomb:
+  # Code from module unistr/u32-uctomb-tests:
+  # Code from module unistr/u8-check:
+  # Code from module unistr/u8-check-tests:
+  # Code from module unistr/u8-chr:
+  # Code from module unistr/u8-chr-tests:
+  # Code from module unistr/u8-cmp:
+  # Code from module unistr/u8-cmp-tests:
+  # Code from module unistr/u8-cmp2:
+  # Code from module unistr/u8-cmp2-tests:
+  # Code from module unistr/u8-cpy:
+  # Code from module unistr/u8-cpy-alloc:
+  # Code from module unistr/u8-cpy-alloc-tests:
+  # Code from module unistr/u8-cpy-tests:
+  # Code from module unistr/u8-endswith:
+  # Code from module unistr/u8-mblen:
+  # Code from module unistr/u8-mblen-tests:
+  # Code from module unistr/u8-mbsnlen:
+  # Code from module unistr/u8-mbsnlen-tests:
+  # Code from module unistr/u8-mbtouc:
+  # Code from module unistr/u8-mbtouc-tests:
+  # Code from module unistr/u8-mbtouc-unsafe:
+  # Code from module unistr/u8-mbtouc-unsafe-tests:
+  # Code from module unistr/u8-mbtoucr:
+  # Code from module unistr/u8-mbtoucr-tests:
+  # Code from module unistr/u8-move:
+  # Code from module unistr/u8-move-tests:
+  # Code from module unistr/u8-next:
+  # Code from module unistr/u8-next-tests:
+  # Code from module unistr/u8-prev:
+  # Code from module unistr/u8-prev-tests:
+  # Code from module unistr/u8-set:
+  # Code from module unistr/u8-set-tests:
+  # Code from module unistr/u8-startswith:
+  # Code from module unistr/u8-stpcpy:
+  # Code from module unistr/u8-stpcpy-tests:
+  # Code from module unistr/u8-stpncpy:
+  # Code from module unistr/u8-stpncpy-tests:
+  # Code from module unistr/u8-strcat:
+  # Code from module unistr/u8-strcat-tests:
+  # Code from module unistr/u8-strchr:
+  # Code from module unistr/u8-strcmp:
+  # Code from module unistr/u8-strcmp-tests:
+  # Code from module unistr/u8-strcoll:
+  # Code from module unistr/u8-strcoll-tests:
+  # Code from module unistr/u8-strcpy:
+  # Code from module unistr/u8-strcpy-tests:
+  # Code from module unistr/u8-strcspn:
+  # Code from module unistr/u8-strdup:
+  # Code from module unistr/u8-strdup-tests:
+  # Code from module unistr/u8-strlen:
+  # Code from module unistr/u8-strlen-tests:
+  # Code from module unistr/u8-strmblen:
+  # Code from module unistr/u8-strmblen-tests:
+  # Code from module unistr/u8-strmbtouc:
+  # Code from module unistr/u8-strmbtouc-tests:
+  # Code from module unistr/u8-strncat:
+  # Code from module unistr/u8-strncat-tests:
+  # Code from module unistr/u8-strncmp:
+  # Code from module unistr/u8-strncmp-tests:
+  # Code from module unistr/u8-strncpy:
+  # Code from module unistr/u8-strncpy-tests:
+  # Code from module unistr/u8-strnlen:
+  # Code from module unistr/u8-strnlen-tests:
+  # Code from module unistr/u8-strpbrk:
+  # Code from module unistr/u8-strrchr:
+  # Code from module unistr/u8-strspn:
+  # Code from module unistr/u8-strstr:
+  # Code from module unistr/u8-strtok:
+  # Code from module unistr/u8-to-u16:
+  # Code from module unistr/u8-to-u16-tests:
+  # Code from module unistr/u8-to-u32:
+  # Code from module unistr/u8-to-u32-tests:
+  # Code from module unistr/u8-uctomb:
+  # Code from module unistr/u8-uctomb-tests:
+  # Code from module unitypes:
+  # Code from module uniwbrk/base:
+  # Code from module uniwbrk/table:
+  # Code from module uniwbrk/u16-wordbreaks:
+  # Code from module uniwbrk/u16-wordbreaks-tests:
+  # Code from module uniwbrk/u32-wordbreaks:
+  # Code from module uniwbrk/u32-wordbreaks-tests:
+  # Code from module uniwbrk/u8-wordbreaks:
+  # Code from module uniwbrk/u8-wordbreaks-tests:
+  # Code from module uniwbrk/ulc-wordbreaks:
+  # Code from module uniwbrk/ulc-wordbreaks-tests:
+  # Code from module uniwbrk/wordbreak-property:
+  # Code from module uniwidth/base:
+  # Code from module uniwidth/u16-strwidth:
+  # Code from module uniwidth/u16-strwidth-tests:
+  # Code from module uniwidth/u16-width:
+  # Code from module uniwidth/u16-width-tests:
+  # Code from module uniwidth/u32-strwidth:
+  # Code from module uniwidth/u32-strwidth-tests:
+  # Code from module uniwidth/u32-width:
+  # Code from module uniwidth/u32-width-tests:
+  # Code from module uniwidth/u8-strwidth:
+  # Code from module uniwidth/u8-strwidth-tests:
+  # Code from module uniwidth/u8-width:
+  # Code from module uniwidth/u8-width-tests:
+  # Code from module uniwidth/width:
+  # Code from module uniwidth/width-tests:
+  # Code from module unsetenv:
+  # Code from module unsetenv-tests:
+  # Code from module unused-parameter:
+  # Code from module verify:
+  # Code from module warn-on-use:
+  # Code from module wchar:
+  # Code from module wchar-tests:
+  # Code from module wctob:
+  # Code from module wctype:
+  # Code from module wctype-tests:
+  # Code from module wcwidth:
+  # Code from module wcwidth-tests:
+  # Code from module xalloc:
+  # Code from module xalloc-die:
+  # Code from module xalloc-die-tests:
+  # Code from module xsize:
+  # Code from module yield:
 ])
 
 # This macro should be invoked from ./configure.ac, in the section
@@ -36,6 +1011,7 @@ AC_DEFUN([gl_INIT],
 [
   AM_CONDITIONAL([GL_COND_LIBTOOL], [true])
   gl_cond_libtool=true
+  gl_m4_base='gnulib-m4'
   m4_pushdef([AC_LIBOBJ], m4_defn([gl_LIBOBJ]))
   m4_pushdef([AC_REPLACE_FUNCS], m4_defn([gl_REPLACE_FUNCS]))
   m4_pushdef([AC_LIBSOURCES], m4_defn([gl_LIBSOURCES]))
@@ -43,97 +1019,752 @@ AC_DEFUN([gl_INIT],
   m4_pushdef([gl_LIBSOURCES_DIR], [])
   gl_COMMON
   gl_source_base='lib'
+  # Code from module alloca-opt:
   gl_FUNC_ALLOCA
-  gl_FUNC_DUP2
-  gl_UNISTD_MODULE_INDICATOR([dup2])
+  # Code from module arg-nonnull:
+  # Code from module array-mergesort:
+  # Code from module c++defs:
+  # Code from module c-ctype:
+  # Code from module c-strcase:
+  # Code from module c-strcaseeq:
+  # Code from module configmake:
+  # Code from module errno:
   gl_HEADER_ERRNO_H
+  # Code from module extensions:
+  # Code from module float:
   gl_FLOAT_H
+  # Code from module fpieee:
+  # Code from module fpucw:
+  # Code from module frexpl-nolibm:
   gl_FUNC_FREXPL_NO_LIBM
   gl_MATH_MODULE_INDICATOR([frexpl])
-  gl_FUNC_GETPAGESIZE
-  gl_UNISTD_MODULE_INDICATOR([getpagesize])
+  # Code from module fseterr:
+  # Code from module gperf:
+  # Code from module havelib:
+  # Code from module iconv:
   AM_ICONV
+  # Code from module iconv-h:
   gl_ICONV_H
+  # Code from module iconv_open:
   gl_FUNC_ICONV_OPEN
+  # Code from module include_next:
+  # Code from module inline:
   gl_INLINE
+  # Code from module isnand-nolibm:
   gl_FUNC_ISNAND_NO_LIBM
+  # Code from module isnanf-nolibm:
   gl_FUNC_ISNANF_NO_LIBM
+  # Code from module isnanl-nolibm:
   gl_FUNC_ISNANL_NO_LIBM
+  # Code from module localcharset:
   gl_LOCALCHARSET
   LOCALCHARSET_TESTS_ENVIRONMENT="CHARSETALIASDIR=\"\$(top_builddir)/$gl_source_base\""
   AC_SUBST([LOCALCHARSET_TESTS_ENVIRONMENT])
+  # Code from module localename:
   gl_LOCALENAME
+  # Code from module lock:
+  gl_LOCK
+  # Code from module malloc-posix:
   gl_FUNC_MALLOC_POSIX
   gl_STDLIB_MODULE_INDICATOR([malloc-posix])
+  # Code from module malloca:
   gl_MALLOCA
+  # Code from module math:
   gl_MATH_H
+  # Code from module mbchar:
   gl_MBCHAR
+  # Code from module mbiter:
   gl_MBITER
+  # Code from module mbrtowc:
   gl_FUNC_MBRTOWC
   gl_WCHAR_MODULE_INDICATOR([mbrtowc])
+  # Code from module mbsinit:
   gl_FUNC_MBSINIT
   gl_WCHAR_MODULE_INDICATOR([mbsinit])
+  # Code from module mbsnlen:
   gl_STRING_MODULE_INDICATOR([mbsnlen])
+  # Code from module memchr:
   gl_FUNC_MEMCHR
   gl_STRING_MODULE_INDICATOR([memchr])
+  # Code from module memcmp2:
+  # Code from module memxfrm:
+  # Code from module minmax:
   gl_MINMAX
+  # Code from module multiarch:
   gl_MULTIARCH
+  # Code from module nocrash:
+  # Code from module printf-frexp:
   gl_FUNC_PRINTF_FREXP
+  # Code from module printf-frexpl:
   gl_FUNC_PRINTF_FREXPL
+  # Code from module printf-safe:
   m4_divert_text([INIT_PREPARE], [gl_printf_safe=yes])
+  # Code from module relocatable-lib-lgpl:
   gl_RELOCATABLE_LIBRARY
+  # Code from module signbit:
   gl_SIGNBIT
   gl_MATH_MODULE_INDICATOR([signbit])
+  # Code from module size_max:
   gl_SIZE_MAX
+  # Code from module stdbool:
   AM_STDBOOL_H
+  # Code from module stddef:
   gl_STDDEF_H
+  # Code from module stdint:
   gl_STDINT_H
+  # Code from module stdlib:
   gl_STDLIB_H
+  # Code from module streq:
+  # Code from module striconveh:
   if test $gl_cond_libtool = false; then
     gl_ltlibdeps="$gl_ltlibdeps $LTLIBICONV"
     gl_libdeps="$gl_libdeps $LIBICONV"
   fi
+  # Code from module striconveha:
+  # Code from module string:
   gl_HEADER_STRING_H
+  # Code from module strncat:
+  gl_FUNC_STRNCAT
+  gl_STRING_MODULE_INDICATOR([strncat])
+  # Code from module threadlib:
+  gl_THREADLIB
+  # Code from module unicase/base:
+  # Code from module unicase/cased:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unicase/empty-prefix-context:
+  # Code from module unicase/empty-suffix-context:
+  # Code from module unicase/ignorable:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unicase/locale-language:
+  # Code from module unicase/special-casing:
+  # Code from module unicase/tocasefold:
+  # Code from module unicase/tolower:
+  # Code from module unicase/totitle:
+  # Code from module unicase/toupper:
+  # Code from module unicase/u16-casecmp:
+  # Code from module unicase/u16-casecoll:
+  # Code from module unicase/u16-casefold:
+  # Code from module unicase/u16-casemap:
+  # Code from module unicase/u16-casexfrm:
+  # Code from module unicase/u16-ct-casefold:
+  # Code from module unicase/u16-ct-tolower:
+  # Code from module unicase/u16-ct-totitle:
+  # Code from module unicase/u16-ct-toupper:
+  # Code from module unicase/u16-is-cased:
+  # Code from module unicase/u16-is-casefolded:
+  # Code from module unicase/u16-is-invariant:
+  # Code from module unicase/u16-is-lowercase:
+  # Code from module unicase/u16-is-titlecase:
+  # Code from module unicase/u16-is-uppercase:
+  # Code from module unicase/u16-tolower:
+  # Code from module unicase/u16-totitle:
+  # Code from module unicase/u16-toupper:
+  # Code from module unicase/u32-casecmp:
+  # Code from module unicase/u32-casecoll:
+  # Code from module unicase/u32-casefold:
+  # Code from module unicase/u32-casemap:
+  # Code from module unicase/u32-casexfrm:
+  # Code from module unicase/u32-ct-casefold:
+  # Code from module unicase/u32-ct-tolower:
+  # Code from module unicase/u32-ct-totitle:
+  # Code from module unicase/u32-ct-toupper:
+  # Code from module unicase/u32-is-cased:
+  # Code from module unicase/u32-is-casefolded:
+  # Code from module unicase/u32-is-invariant:
+  # Code from module unicase/u32-is-lowercase:
+  # Code from module unicase/u32-is-titlecase:
+  # Code from module unicase/u32-is-uppercase:
+  # Code from module unicase/u32-tolower:
+  # Code from module unicase/u32-totitle:
+  # Code from module unicase/u32-toupper:
+  # Code from module unicase/u8-casecmp:
+  # Code from module unicase/u8-casecoll:
+  # Code from module unicase/u8-casefold:
+  # Code from module unicase/u8-casemap:
+  # Code from module unicase/u8-casexfrm:
+  # Code from module unicase/u8-ct-casefold:
+  # Code from module unicase/u8-ct-tolower:
+  # Code from module unicase/u8-ct-totitle:
+  # Code from module unicase/u8-ct-toupper:
+  # Code from module unicase/u8-is-cased:
+  # Code from module unicase/u8-is-casefolded:
+  # Code from module unicase/u8-is-invariant:
+  # Code from module unicase/u8-is-lowercase:
+  # Code from module unicase/u8-is-titlecase:
+  # Code from module unicase/u8-is-uppercase:
+  # Code from module unicase/u8-tolower:
+  # Code from module unicase/u8-totitle:
+  # Code from module unicase/u8-toupper:
+  # Code from module unicase/ulc-casecmp:
+  # Code from module unicase/ulc-casecoll:
+  # Code from module unicase/ulc-casexfrm:
+  # Code from module uniconv/base:
+  # Code from module uniconv/u16-conv-from-enc:
   AC_REQUIRE([gl_BIGENDIAN])
+  # Code from module uniconv/u16-conv-to-enc:
   AC_REQUIRE([gl_BIGENDIAN])
+  # Code from module uniconv/u16-strconv-from-enc:
+  # Code from module uniconv/u16-strconv-from-locale:
+  # Code from module uniconv/u16-strconv-to-enc:
   AC_REQUIRE([gl_BIGENDIAN])
+  # Code from module uniconv/u16-strconv-to-locale:
+  # Code from module uniconv/u32-conv-from-enc:
+  # Code from module uniconv/u32-conv-to-enc:
+  # Code from module uniconv/u32-strconv-from-enc:
+  # Code from module uniconv/u32-strconv-from-locale:
+  # Code from module uniconv/u32-strconv-to-enc:
+  # Code from module uniconv/u32-strconv-to-locale:
+  # Code from module uniconv/u8-conv-from-enc:
+  # Code from module uniconv/u8-conv-to-enc:
+  # Code from module uniconv/u8-strconv-from-enc:
+  # Code from module uniconv/u8-strconv-from-locale:
+  # Code from module uniconv/u8-strconv-to-enc:
+  # Code from module uniconv/u8-strconv-to-locale:
+  # Code from module unictype/base:
+  # Code from module unictype/bidicategory-all:
+  # Code from module unictype/bidicategory-byname:
+  # Code from module unictype/bidicategory-name:
+  # Code from module unictype/bidicategory-of:
+  # Code from module unictype/bidicategory-test:
+  # Code from module unictype/block-all:
+  # Code from module unictype/block-list:
+  # Code from module unictype/block-of:
+  # Code from module unictype/block-test:
+  # Code from module unictype/category-C:
+  # Code from module unictype/category-Cc:
+  # Code from module unictype/category-Cf:
+  # Code from module unictype/category-Cn:
+  # Code from module unictype/category-Co:
+  # Code from module unictype/category-Cs:
+  # Code from module unictype/category-L:
+  # Code from module unictype/category-Ll:
+  # Code from module unictype/category-Lm:
+  # Code from module unictype/category-Lo:
+  # Code from module unictype/category-Lt:
+  # Code from module unictype/category-Lu:
+  # Code from module unictype/category-M:
+  # Code from module unictype/category-Mc:
+  # Code from module unictype/category-Me:
+  # Code from module unictype/category-Mn:
+  # Code from module unictype/category-N:
+  # Code from module unictype/category-Nd:
+  # Code from module unictype/category-Nl:
+  # Code from module unictype/category-No:
+  # Code from module unictype/category-P:
+  # Code from module unictype/category-Pc:
+  # Code from module unictype/category-Pd:
+  # Code from module unictype/category-Pe:
+  # Code from module unictype/category-Pf:
+  # Code from module unictype/category-Pi:
+  # Code from module unictype/category-Po:
+  # Code from module unictype/category-Ps:
+  # Code from module unictype/category-S:
+  # Code from module unictype/category-Sc:
+  # Code from module unictype/category-Sk:
+  # Code from module unictype/category-Sm:
+  # Code from module unictype/category-So:
+  # Code from module unictype/category-Z:
+  # Code from module unictype/category-Zl:
+  # Code from module unictype/category-Zp:
+  # Code from module unictype/category-Zs:
+  # Code from module unictype/category-all:
+  # Code from module unictype/category-and:
+  # Code from module unictype/category-and-not:
+  # Code from module unictype/category-byname:
+  # Code from module unictype/category-name:
+  # Code from module unictype/category-none:
+  # Code from module unictype/category-of:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/category-or:
+  # Code from module unictype/category-test:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/category-test-withtable:
+  # Code from module unictype/combining-class:
+  # Code from module unictype/ctype-alnum:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/ctype-alpha:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/ctype-blank:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/ctype-cntrl:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/ctype-digit:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/ctype-graph:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/ctype-lower:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/ctype-print:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/ctype-punct:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/ctype-space:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/ctype-upper:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/ctype-xdigit:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/decimal-digit:
+  # Code from module unictype/digit:
+  # Code from module unictype/mirror:
+  # Code from module unictype/numeric:
+  # Code from module unictype/property-all:
+  # Code from module unictype/property-alphabetic:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-ascii-hex-digit:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-arabic-digit:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-arabic-right-to-left:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-block-separator:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-boundary-neutral:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-common-separator:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-control:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-embedding-or-override:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-eur-num-separator:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-eur-num-terminator:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-european-digit:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-hebrew-right-to-left:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-left-to-right:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-non-spacing-mark:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-other-neutral:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-pdf:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-segment-separator:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-bidi-whitespace:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-byname:
+  # Code from module unictype/property-combining:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-composite:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-currency-symbol:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-dash:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-decimal-digit:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-default-ignorable-code-point:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-deprecated:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-diacritic:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-extender:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-format-control:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-grapheme-base:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-grapheme-extend:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-grapheme-link:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-hex-digit:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-hyphen:
   AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-id-continue:
   AC_REQUIRE([AC_C_INLINE])
-  gl_MODULE_INDICATOR([uninorm/u16-normalize])
-  gl_MODULE_INDICATOR([uninorm/u32-normalize])
-  gl_MODULE_INDICATOR([uninorm/u8-normalize])
+  # Code from module unictype/property-id-start:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-ideographic:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-ids-binary-operator:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-ids-trinary-operator:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-ignorable-control:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-iso-control:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-join-control:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-left-of-pair:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-line-separator:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-logical-order-exception:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-lowercase:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-math:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-non-break:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-not-a-character:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-numeric:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-other-alphabetic:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-other-default-ignorable-code-point:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-other-grapheme-extend:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-other-id-continue:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-other-id-start:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-other-lowercase:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-other-math:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-other-uppercase:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-paired-punctuation:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-paragraph-separator:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-pattern-syntax:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-pattern-white-space:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-private-use:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-punctuation:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-quotation-mark:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-radical:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-sentence-terminal:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-soft-dotted:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-space:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-terminal-punctuation:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-test:
+  # Code from module unictype/property-titlecase:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-unassigned-code-value:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-unified-ideograph:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-uppercase:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-variation-selector:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-white-space:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-xid-continue:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-xid-start:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/property-zero-width:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/scripts:
+  # Code from module unictype/scripts-all:
+  # Code from module unictype/syntax-c-ident:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/syntax-c-whitespace:
+  # Code from module unictype/syntax-java-ident:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unictype/syntax-java-whitespace:
+  # Code from module unilbrk/base:
+  # Code from module unilbrk/tables:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module unilbrk/u16-possible-linebreaks:
+  # Code from module unilbrk/u16-width-linebreaks:
+  # Code from module unilbrk/u32-possible-linebreaks:
+  # Code from module unilbrk/u32-width-linebreaks:
+  # Code from module unilbrk/u8-possible-linebreaks:
+  # Code from module unilbrk/u8-width-linebreaks:
+  # Code from module unilbrk/ulc-common:
+  # Code from module unilbrk/ulc-possible-linebreaks:
+  # Code from module unilbrk/ulc-width-linebreaks:
+  # Code from module uniname/base:
+  # Code from module uniname/uniname:
+  # Code from module uninorm/base:
+  # Code from module uninorm/canonical-decomposition:
+  # Code from module uninorm/compat-decomposition:
+  # Code from module uninorm/composition:
+  # Code from module uninorm/decompose-internal:
+  # Code from module uninorm/decomposing-form:
+  # Code from module uninorm/decomposition:
+  # Code from module uninorm/decomposition-table:
+  AC_REQUIRE([AC_C_INLINE])
+  # Code from module uninorm/filter:
+  # Code from module uninorm/nfc:
+  # Code from module uninorm/nfd:
+  # Code from module uninorm/nfkc:
+  # Code from module uninorm/nfkd:
+  # Code from module uninorm/u16-normalize:
+  gl_MODULE_INDICATOR_FOR_TESTS([uninorm/u16-normalize])
+  # Code from module uninorm/u16-normcmp:
+  # Code from module uninorm/u16-normcoll:
+  # Code from module uninorm/u16-normxfrm:
+  # Code from module uninorm/u32-normalize:
+  gl_MODULE_INDICATOR_FOR_TESTS([uninorm/u32-normalize])
+  # Code from module uninorm/u32-normcmp:
+  # Code from module uninorm/u32-normcoll:
+  # Code from module uninorm/u32-normxfrm:
+  # Code from module uninorm/u8-normalize:
+  gl_MODULE_INDICATOR_FOR_TESTS([uninorm/u8-normalize])
+  # Code from module uninorm/u8-normcmp:
+  # Code from module uninorm/u8-normcoll:
+  # Code from module uninorm/u8-normxfrm:
+  # Code from module unistd:
   gl_UNISTD_H
+  # Code from module unistdio/base:
+  # Code from module unistdio/u-printf-args:
   gl_PREREQ_PRINTF_ARGS
+  # Code from module unistdio/u16-asnprintf:
+  # Code from module unistdio/u16-asprintf:
+  # Code from module unistdio/u16-printf-parse:
   gl_PREREQ_PRINTF_PARSE
+  # Code from module unistdio/u16-snprintf:
+  # Code from module unistdio/u16-sprintf:
+  # Code from module unistdio/u16-u16-asnprintf:
+  # Code from module unistdio/u16-u16-asprintf:
+  # Code from module unistdio/u16-u16-snprintf:
+  # Code from module unistdio/u16-u16-sprintf:
+  # Code from module unistdio/u16-u16-vasnprintf:
   gl_PREREQ_VASNPRINTF_WITH_EXTRAS
+  # Code from module unistdio/u16-u16-vasprintf:
+  # Code from module unistdio/u16-u16-vsnprintf:
+  # Code from module unistdio/u16-u16-vsprintf:
+  # Code from module unistdio/u16-vasnprintf:
   gl_PREREQ_VASNPRINTF_WITH_EXTRAS
+  # Code from module unistdio/u16-vasprintf:
+  # Code from module unistdio/u16-vsnprintf:
+  # Code from module unistdio/u16-vsprintf:
+  # Code from module unistdio/u32-asnprintf:
+  # Code from module unistdio/u32-asprintf:
+  # Code from module unistdio/u32-printf-parse:
   gl_PREREQ_PRINTF_PARSE
+  # Code from module unistdio/u32-snprintf:
+  # Code from module unistdio/u32-sprintf:
+  # Code from module unistdio/u32-u32-asnprintf:
+  # Code from module unistdio/u32-u32-asprintf:
+  # Code from module unistdio/u32-u32-snprintf:
+  # Code from module unistdio/u32-u32-sprintf:
+  # Code from module unistdio/u32-u32-vasnprintf:
   gl_PREREQ_VASNPRINTF_WITH_EXTRAS
+  # Code from module unistdio/u32-u32-vasprintf:
+  # Code from module unistdio/u32-u32-vsnprintf:
+  # Code from module unistdio/u32-u32-vsprintf:
+  # Code from module unistdio/u32-vasnprintf:
   gl_PREREQ_VASNPRINTF_WITH_EXTRAS
+  # Code from module unistdio/u32-vasprintf:
+  # Code from module unistdio/u32-vsnprintf:
+  # Code from module unistdio/u32-vsprintf:
+  # Code from module unistdio/u8-asnprintf:
+  # Code from module unistdio/u8-asprintf:
+  # Code from module unistdio/u8-printf-parse:
   gl_PREREQ_PRINTF_PARSE
+  # Code from module unistdio/u8-snprintf:
+  # Code from module unistdio/u8-sprintf:
+  # Code from module unistdio/u8-u8-asnprintf:
+  # Code from module unistdio/u8-u8-asprintf:
+  # Code from module unistdio/u8-u8-snprintf:
+  # Code from module unistdio/u8-u8-sprintf:
+  # Code from module unistdio/u8-u8-vasnprintf:
   gl_PREREQ_VASNPRINTF_WITH_EXTRAS
+  # Code from module unistdio/u8-u8-vasprintf:
+  # Code from module unistdio/u8-u8-vsnprintf:
+  # Code from module unistdio/u8-u8-vsprintf:
+  # Code from module unistdio/u8-vasnprintf:
   gl_PREREQ_VASNPRINTF_WITH_EXTRAS
+  # Code from module unistdio/u8-vasprintf:
+  # Code from module unistdio/u8-vsnprintf:
+  # Code from module unistdio/u8-vsprintf:
+  # Code from module unistdio/ulc-asnprintf:
+  # Code from module unistdio/ulc-asprintf:
+  # Code from module unistdio/ulc-fprintf:
+  # Code from module unistdio/ulc-printf-parse:
   gl_PREREQ_PRINTF_PARSE
+  # Code from module unistdio/ulc-snprintf:
+  # Code from module unistdio/ulc-sprintf:
+  # Code from module unistdio/ulc-vasnprintf:
   gl_PREREQ_VASNPRINTF_WITH_EXTRAS
+  # Code from module unistdio/ulc-vasprintf:
+  # Code from module unistdio/ulc-vfprintf:
+  # Code from module unistdio/ulc-vsnprintf:
+  # Code from module unistdio/ulc-vsprintf:
+  # Code from module unistr/base:
+  # Code from module unistr/u16-check:
+  # Code from module unistr/u16-chr:
+  # Code from module unistr/u16-cmp:
+  # Code from module unistr/u16-cmp2:
+  # Code from module unistr/u16-cpy:
+  # Code from module unistr/u16-cpy-alloc:
+  # Code from module unistr/u16-endswith:
+  # Code from module unistr/u16-mblen:
+  # Code from module unistr/u16-mbsnlen:
+  # Code from module unistr/u16-mbtouc:
   gl_MODULE_INDICATOR([unistr/u16-mbtouc])
+  # Code from module unistr/u16-mbtouc-unsafe:
   gl_MODULE_INDICATOR([unistr/u16-mbtouc-unsafe])
+  # Code from module unistr/u16-mbtoucr:
   gl_MODULE_INDICATOR([unistr/u16-mbtoucr])
+  # Code from module unistr/u16-move:
+  # Code from module unistr/u16-next:
+  # Code from module unistr/u16-prev:
+  # Code from module unistr/u16-set:
+  # Code from module unistr/u16-startswith:
+  # Code from module unistr/u16-stpcpy:
+  # Code from module unistr/u16-stpncpy:
+  # Code from module unistr/u16-strcat:
+  # Code from module unistr/u16-strchr:
+  # Code from module unistr/u16-strcmp:
+  # Code from module unistr/u16-strcoll:
+  # Code from module unistr/u16-strcpy:
+  # Code from module unistr/u16-strcspn:
+  # Code from module unistr/u16-strdup:
+  # Code from module unistr/u16-strlen:
+  # Code from module unistr/u16-strmblen:
+  # Code from module unistr/u16-strmbtouc:
+  # Code from module unistr/u16-strncat:
+  # Code from module unistr/u16-strncmp:
+  # Code from module unistr/u16-strncpy:
+  # Code from module unistr/u16-strnlen:
+  # Code from module unistr/u16-strpbrk:
+  # Code from module unistr/u16-strrchr:
+  # Code from module unistr/u16-strspn:
+  # Code from module unistr/u16-strstr:
+  # Code from module unistr/u16-strtok:
+  # Code from module unistr/u16-to-u32:
+  # Code from module unistr/u16-to-u8:
+  # Code from module unistr/u16-uctomb:
   gl_MODULE_INDICATOR([unistr/u16-uctomb])
+  # Code from module unistr/u32-check:
+  # Code from module unistr/u32-chr:
+  # Code from module unistr/u32-cmp:
+  # Code from module unistr/u32-cmp2:
+  # Code from module unistr/u32-cpy:
+  # Code from module unistr/u32-cpy-alloc:
+  # Code from module unistr/u32-endswith:
+  # Code from module unistr/u32-mblen:
+  # Code from module unistr/u32-mbsnlen:
+  # Code from module unistr/u32-mbtouc:
   gl_MODULE_INDICATOR([unistr/u32-mbtouc])
+  # Code from module unistr/u32-mbtouc-unsafe:
   gl_MODULE_INDICATOR([unistr/u32-mbtouc-unsafe])
+  # Code from module unistr/u32-mbtoucr:
   gl_MODULE_INDICATOR([unistr/u32-mbtoucr])
+  # Code from module unistr/u32-move:
+  # Code from module unistr/u32-next:
+  # Code from module unistr/u32-prev:
+  # Code from module unistr/u32-set:
+  # Code from module unistr/u32-startswith:
+  # Code from module unistr/u32-stpcpy:
+  # Code from module unistr/u32-stpncpy:
+  # Code from module unistr/u32-strcat:
+  # Code from module unistr/u32-strchr:
+  # Code from module unistr/u32-strcmp:
+  # Code from module unistr/u32-strcoll:
+  # Code from module unistr/u32-strcpy:
+  # Code from module unistr/u32-strcspn:
+  # Code from module unistr/u32-strdup:
+  # Code from module unistr/u32-strlen:
+  # Code from module unistr/u32-strmblen:
+  # Code from module unistr/u32-strmbtouc:
+  # Code from module unistr/u32-strncat:
+  # Code from module unistr/u32-strncmp:
+  # Code from module unistr/u32-strncpy:
+  # Code from module unistr/u32-strnlen:
+  # Code from module unistr/u32-strpbrk:
+  # Code from module unistr/u32-strrchr:
+  # Code from module unistr/u32-strspn:
+  # Code from module unistr/u32-strstr:
+  # Code from module unistr/u32-strtok:
+  # Code from module unistr/u32-to-u16:
+  # Code from module unistr/u32-to-u8:
+  # Code from module unistr/u32-uctomb:
   gl_MODULE_INDICATOR([unistr/u32-uctomb])
+  # Code from module unistr/u8-check:
+  # Code from module unistr/u8-chr:
+  # Code from module unistr/u8-cmp:
+  # Code from module unistr/u8-cmp2:
+  # Code from module unistr/u8-cpy:
+  # Code from module unistr/u8-cpy-alloc:
+  # Code from module unistr/u8-endswith:
+  # Code from module unistr/u8-mblen:
+  # Code from module unistr/u8-mbsnlen:
+  # Code from module unistr/u8-mbtouc:
   gl_MODULE_INDICATOR([unistr/u8-mbtouc])
+  # Code from module unistr/u8-mbtouc-unsafe:
   gl_MODULE_INDICATOR([unistr/u8-mbtouc-unsafe])
+  # Code from module unistr/u8-mbtoucr:
   gl_MODULE_INDICATOR([unistr/u8-mbtoucr])
+  # Code from module unistr/u8-move:
+  # Code from module unistr/u8-next:
+  # Code from module unistr/u8-prev:
+  # Code from module unistr/u8-set:
+  # Code from module unistr/u8-startswith:
+  # Code from module unistr/u8-stpcpy:
   AC_CHECK_FUNCS_ONCE([stpcpy])
+  # Code from module unistr/u8-stpncpy:
+  # Code from module unistr/u8-strcat:
+  # Code from module unistr/u8-strchr:
+  # Code from module unistr/u8-strcmp:
+  # Code from module unistr/u8-strcoll:
+  # Code from module unistr/u8-strcpy:
+  # Code from module unistr/u8-strcspn:
+  # Code from module unistr/u8-strdup:
   AC_CHECK_FUNCS_ONCE([strdup])
+  # Code from module unistr/u8-strlen:
+  # Code from module unistr/u8-strmblen:
+  # Code from module unistr/u8-strmbtouc:
+  # Code from module unistr/u8-strncat:
+  # Code from module unistr/u8-strncmp:
+  # Code from module unistr/u8-strncpy:
+  # Code from module unistr/u8-strnlen:
+  # Code from module unistr/u8-strpbrk:
+  # Code from module unistr/u8-strrchr:
+  # Code from module unistr/u8-strspn:
+  # Code from module unistr/u8-strstr:
+  # Code from module unistr/u8-strtok:
+  # Code from module unistr/u8-to-u16:
+  # Code from module unistr/u8-to-u32:
+  # Code from module unistr/u8-uctomb:
   gl_MODULE_INDICATOR([unistr/u8-uctomb])
+  # Code from module unitypes:
+  # Code from module uniwbrk/base:
+  # Code from module uniwbrk/table:
+  # Code from module uniwbrk/u16-wordbreaks:
+  # Code from module uniwbrk/u32-wordbreaks:
+  # Code from module uniwbrk/u8-wordbreaks:
+  # Code from module uniwbrk/ulc-wordbreaks:
+  # Code from module uniwbrk/wordbreak-property:
+  # Code from module uniwidth/base:
+  # Code from module uniwidth/u16-strwidth:
+  # Code from module uniwidth/u16-width:
+  # Code from module uniwidth/u32-strwidth:
+  # Code from module uniwidth/u32-width:
+  # Code from module uniwidth/u8-strwidth:
+  # Code from module uniwidth/u8-width:
+  # Code from module uniwidth/width:
+  # Code from module unused-parameter:
+  # Code from module verify:
+  # Code from module warn-on-use:
+  # Code from module wchar:
   gl_WCHAR_H
+  # Code from module wctype:
   gl_WCTYPE_H
+  # Code from module wcwidth:
   gl_FUNC_WCWIDTH
   gl_WCHAR_MODULE_INDICATOR([wcwidth])
+  # Code from module xsize:
   gl_XSIZE
+  # End of code from modules
   m4_ifval(gl_LIBSOURCES_LIST, [
     m4_syscmd([test ! -d ]m4_defn([gl_LIBSOURCES_DIR])[ ||
       for gl_file in ]gl_LIBSOURCES_LIST[ ; do
@@ -156,7 +1787,7 @@ AC_DEFUN([gl_INIT],
     if test -n "$gl_LIBOBJS"; then
       # Remove the extension.
       sed_drop_objext='s/\.o$//;s/\.obj$//'
-      for i in `for i in $gl_LIBOBJS; do echo "$i"; done | sed "$sed_drop_objext" | sort | uniq`; do
+      for i in `for i in $gl_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
         gl_libobjs="$gl_libobjs $i.$ac_objext"
         gl_ltlibobjs="$gl_ltlibobjs $i.lo"
       done
@@ -173,6 +1804,12 @@ AC_DEFUN([gl_INIT],
   m4_pushdef([gltests_LIBSOURCES_DIR], [])
   gl_COMMON
   gl_source_base='tests'
+changequote(,)dnl
+  gltests_WITNESS=IN_`echo "${PACKAGE-$PACKAGE_TARNAME}" | LC_ALL=C tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ | LC_ALL=C sed -e 's/[^A-Z0-9_]/_/g'`_GNULIB_TESTS
+changequote([, ])dnl
+  AC_SUBST([gltests_WITNESS])
+  gl_module_indicator_condition=$gltests_WITNESS
+  m4_pushdef([gl_MODULE_INDICATOR_CONDITION], [$gl_module_indicator_condition])
   gt_LOCALE_FR
   gt_LOCALE_TR_UTF8
   gl_ENVIRON
@@ -181,22 +1818,25 @@ AC_DEFUN([gl_INIT],
   m4_ifdef([AM_XGETTEXT_OPTION],
     [AM_][XGETTEXT_OPTION([--flag=error:3:c-format])
      AM_][XGETTEXT_OPTION([--flag=error_at_line:5:c-format])])
-  gl_EXITFAIL
-  gl_FCNTL_H
+  gl_FUNC_GETPAGESIZE
+  gl_UNISTD_MODULE_INDICATOR([getpagesize])
   AC_SUBST([LIBINTL])
   AC_SUBST([LTLIBINTL])
   gl_DOUBLE_EXPONENT_LOCATION
   gl_FLOAT_EXPONENT_LOCATION
   gl_LONG_DOUBLE_EXPONENT_LOCATION
   gl_LOCALE_H
+  AC_CHECK_FUNCS_ONCE([newlocale])
+  AC_CHECK_FUNCS_ONCE([newlocale])
   gt_LOCALE_FR
   gt_LOCALE_FR_UTF8
   gt_LOCALE_JA
   gt_LOCALE_ZH_CN
   gt_LOCALE_FR_UTF8
-  gl_FUNC_OPEN
-  gl_MODULE_INDICATOR([open])
-  gl_FCNTL_MODULE_INDICATOR([open])
+  AC_CHECK_DECLS([program_invocation_name], [], [], [#include <errno.h>])
+  AC_CHECK_DECLS([program_invocation_short_name], [], [], [#include <errno.h>])
+  gl_FUNC_PUTENV
+  gl_STDLIB_MODULE_INDICATOR([putenv])
   gl_FUNC_SETENV
   gl_STDLIB_MODULE_INDICATOR([setenv])
   AC_REQUIRE([gl_FLOAT_EXPONENT_LOCATION])
@@ -206,6 +1846,10 @@ AC_DEFUN([gl_INIT],
   gt_TYPE_WINT_T
   gl_FUNC_STRERROR
   gl_STRING_MODULE_INDICATOR([strerror])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_THREAD
   gt_LOCALE_FR
   gt_LOCALE_FR_UTF8
   gt_LOCALE_JA
@@ -227,12 +1871,68 @@ AC_DEFUN([gl_INIT],
   gt_LOCALE_FR_UTF8
   gt_LOCALE_FR
   gt_LOCALE_FR_UTF8
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
   gt_LOCALE_FR
   gl_FUNC_UNSETENV
   gl_STDLIB_MODULE_INDICATOR([unsetenv])
   gl_FUNC_WCTOB
   gl_WCHAR_MODULE_INDICATOR([wctob])
   gl_XALLOC
+  gl_YIELD
+  m4_popdef([gl_MODULE_INDICATOR_CONDITION])
   m4_ifval(gltests_LIBSOURCES_LIST, [
     m4_syscmd([test ! -d ]m4_defn([gltests_LIBSOURCES_DIR])[ ||
       for gl_file in ]gltests_LIBSOURCES_LIST[ ; do
@@ -255,7 +1955,7 @@ AC_DEFUN([gl_INIT],
     if test -n "$gltests_LIBOBJS"; then
       # Remove the extension.
       sed_drop_objext='s/\.o$//;s/\.obj$//'
-      for i in `for i in $gltests_LIBOBJS; do echo "$i"; done | sed "$sed_drop_objext" | sort | uniq`; do
+      for i in `for i in $gltests_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
         gltests_libobjs="$gltests_libobjs $i.$ac_objext"
         gltests_ltlibobjs="$gltests_ltlibobjs $i.lo"
       done
@@ -324,8 +2024,11 @@ AC_DEFUN([gltests_LIBSOURCES], [
 # This macro records the list of files which have been installed by
 # gnulib-tool and may be removed by future gnulib-tool invocations.
 AC_DEFUN([gl_FILE_LIST], [
+  build-aux/arg-nonnull.h
+  build-aux/c++defs.h
   build-aux/config.rpath
-  build-aux/link-warning.h
+  build-aux/unused-parameter.h
+  build-aux/warn-on-use.h
   doc/relocatable.texi
   lib/alloca.in.h
   lib/array-mergesort.h
@@ -336,7 +2039,6 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/c-strcaseeq.h
   lib/c-strncasecmp.c
   lib/config.charset
-  lib/dup2.c
   lib/errno.in.h
   lib/float+.h
   lib/float.in.h
@@ -345,12 +2047,15 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/frexpl.c
   lib/fseterr.c
   lib/fseterr.h
-  lib/getpagesize.c
+  lib/glthread/lock.c
+  lib/glthread/lock.h
+  lib/glthread/threadlib.c
   lib/iconv.in.h
   lib/iconv_open-aix.gperf
   lib/iconv_open-hpux.gperf
   lib/iconv_open-irix.gperf
   lib/iconv_open-osf.gperf
+  lib/iconv_open-solaris.gperf
   lib/iconv_open.c
   lib/iconveh.h
   lib/isnan.c
@@ -409,6 +2114,7 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/striconveha.c
   lib/striconveha.h
   lib/string.in.h
+  lib/strncat.c
   lib/unicase.h
   lib/unicase/cased.c
   lib/unicase/cased.h
@@ -1132,17 +2838,15 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/00gnulib.m4
   m4/alloca.m4
   m4/codeset.m4
-  m4/dup2.m4
   m4/eealloc.m4
   m4/environ.m4
   m4/errno_h.m4
   m4/error.m4
-  m4/exitfail.m4
   m4/exponentd.m4
   m4/exponentf.m4
   m4/exponentl.m4
   m4/extensions.m4
-  m4/fcntl_h.m4
+  m4/fcntl-o.m4
   m4/float_h.m4
   m4/fpieee.m4
   m4/frexp.m4
@@ -1173,6 +2877,7 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/locale-zh.m4
   m4/locale_h.m4
   m4/localename.m4
+  m4/lock.m4
   m4/longlong.m4
   m4/malloc.m4
   m4/malloca.m4
@@ -1185,13 +2890,12 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/memchr.m4
   m4/minmax.m4
   m4/mmap-anon.m4
-  m4/mode_t.m4
   m4/multiarch.m4
   m4/nocrash.m4
-  m4/open.m4
   m4/printf-frexp.m4
   m4/printf-frexpl.m4
   m4/printf.m4
+  m4/putenv.m4
   m4/relocatable-lib.m4
   m4/setenv.m4
   m4/signbit.m4
@@ -1203,29 +2907,36 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/stdlib_h.m4
   m4/strerror.m4
   m4/string_h.m4
+  m4/strncat.m4
+  m4/thread.m4
+  m4/threadlib.m4
   m4/unistd_h.m4
   m4/vasnprintf.m4
-  m4/wchar.m4
+  m4/warn-on-use.m4
+  m4/wchar_h.m4
   m4/wchar_t.m4
   m4/wctob.m4
-  m4/wctype.m4
+  m4/wctype_h.m4
   m4/wcwidth.m4
   m4/wint_t.m4
   m4/xalloc.m4
   m4/xsize.m4
+  m4/yield.m4
+  tests/init.sh
+  tests/macros.h
   tests/nan.h
+  tests/signature.h
   tests/test-alloca-opt.c
   tests/test-array-mergesort.c
   tests/test-c-ctype.c
   tests/test-c-strcase.sh
   tests/test-c-strcasecmp.c
   tests/test-c-strncasecmp.c
-  tests/test-dup2.c
   tests/test-environ.c
   tests/test-errno.c
-  tests/test-fcntl.c
   tests/test-frexpl.c
   tests/test-fseterr.c
+  tests/test-iconv-h.c
   tests/test-iconv.c
   tests/test-isnand-nolibm.c
   tests/test-isnand.h
@@ -1235,6 +2946,7 @@ AC_DEFUN([gl_FILE_LIST], [
   tests/test-isnanl.h
   tests/test-locale.c
   tests/test-localename.c
+  tests/test-lock.c
   tests/test-malloca.c
   tests/test-math.c
   tests/test-mbrtowc.c
@@ -1245,9 +2957,9 @@ AC_DEFUN([gl_FILE_LIST], [
   tests/test-mbsinit.c
   tests/test-mbsinit.sh
   tests/test-memchr.c
-  tests/test-open.c
   tests/test-printf-frexp.c
   tests/test-printf-frexpl.c
+  tests/test-setenv.c
   tests/test-signbit.c
   tests/test-stdbool.c
   tests/test-stddef.c
@@ -1257,10 +2969,14 @@ AC_DEFUN([gl_FILE_LIST], [
   tests/test-striconveh.c
   tests/test-striconveha.c
   tests/test-string.c
+  tests/test-strncat.c
   tests/test-unistd.c
+  tests/test-unsetenv.c
   tests/test-wchar.c
   tests/test-wctype.c
   tests/test-wcwidth.c
+  tests/test-xalloc-die.c
+  tests/test-xalloc-die.sh
   tests/unicase/test-casecmp.h
   tests/unicase/test-cased.c
   tests/unicase/test-ignorable.c
@@ -1586,6 +3302,125 @@ AC_DEFUN([gl_FILE_LIST], [
   tests/unistdio/test-ulc-vasprintf1.c
   tests/unistdio/test-ulc-vsnprintf1.c
   tests/unistdio/test-ulc-vsprintf1.c
+  tests/unistr/test-chr.h
+  tests/unistr/test-cmp.h
+  tests/unistr/test-cmp2.h
+  tests/unistr/test-cpy-alloc.h
+  tests/unistr/test-cpy.h
+  tests/unistr/test-move.h
+  tests/unistr/test-set.h
+  tests/unistr/test-stpcpy.h
+  tests/unistr/test-stpncpy.h
+  tests/unistr/test-strcat.h
+  tests/unistr/test-strcmp.h
+  tests/unistr/test-strcpy.h
+  tests/unistr/test-strdup.h
+  tests/unistr/test-strncat.h
+  tests/unistr/test-strncmp.h
+  tests/unistr/test-strncpy.h
+  tests/unistr/test-strnlen.h
+  tests/unistr/test-u16-check.c
+  tests/unistr/test-u16-chr.c
+  tests/unistr/test-u16-cmp.c
+  tests/unistr/test-u16-cmp2.c
+  tests/unistr/test-u16-cpy-alloc.c
+  tests/unistr/test-u16-cpy.c
+  tests/unistr/test-u16-mblen.c
+  tests/unistr/test-u16-mbsnlen.c
+  tests/unistr/test-u16-mbtouc-unsafe.c
+  tests/unistr/test-u16-mbtouc.c
+  tests/unistr/test-u16-mbtouc.h
+  tests/unistr/test-u16-mbtoucr.c
+  tests/unistr/test-u16-move.c
+  tests/unistr/test-u16-next.c
+  tests/unistr/test-u16-prev.c
+  tests/unistr/test-u16-set.c
+  tests/unistr/test-u16-stpcpy.c
+  tests/unistr/test-u16-stpncpy.c
+  tests/unistr/test-u16-strcat.c
+  tests/unistr/test-u16-strcmp.c
+  tests/unistr/test-u16-strcmp.h
+  tests/unistr/test-u16-strcoll.c
+  tests/unistr/test-u16-strcpy.c
+  tests/unistr/test-u16-strdup.c
+  tests/unistr/test-u16-strlen.c
+  tests/unistr/test-u16-strmblen.c
+  tests/unistr/test-u16-strmbtouc.c
+  tests/unistr/test-u16-strncat.c
+  tests/unistr/test-u16-strncmp.c
+  tests/unistr/test-u16-strncpy.c
+  tests/unistr/test-u16-strnlen.c
+  tests/unistr/test-u16-to-u32.c
+  tests/unistr/test-u16-to-u8.c
+  tests/unistr/test-u16-uctomb.c
+  tests/unistr/test-u32-check.c
+  tests/unistr/test-u32-chr.c
+  tests/unistr/test-u32-cmp.c
+  tests/unistr/test-u32-cmp2.c
+  tests/unistr/test-u32-cpy-alloc.c
+  tests/unistr/test-u32-cpy.c
+  tests/unistr/test-u32-mblen.c
+  tests/unistr/test-u32-mbsnlen.c
+  tests/unistr/test-u32-mbtouc-unsafe.c
+  tests/unistr/test-u32-mbtouc.c
+  tests/unistr/test-u32-mbtouc.h
+  tests/unistr/test-u32-mbtoucr.c
+  tests/unistr/test-u32-move.c
+  tests/unistr/test-u32-next.c
+  tests/unistr/test-u32-prev.c
+  tests/unistr/test-u32-set.c
+  tests/unistr/test-u32-stpcpy.c
+  tests/unistr/test-u32-stpncpy.c
+  tests/unistr/test-u32-strcat.c
+  tests/unistr/test-u32-strcmp.c
+  tests/unistr/test-u32-strcmp.h
+  tests/unistr/test-u32-strcoll.c
+  tests/unistr/test-u32-strcpy.c
+  tests/unistr/test-u32-strdup.c
+  tests/unistr/test-u32-strlen.c
+  tests/unistr/test-u32-strmblen.c
+  tests/unistr/test-u32-strmbtouc.c
+  tests/unistr/test-u32-strncat.c
+  tests/unistr/test-u32-strncmp.c
+  tests/unistr/test-u32-strncpy.c
+  tests/unistr/test-u32-strnlen.c
+  tests/unistr/test-u32-to-u16.c
+  tests/unistr/test-u32-to-u8.c
+  tests/unistr/test-u32-uctomb.c
+  tests/unistr/test-u8-check.c
+  tests/unistr/test-u8-chr.c
+  tests/unistr/test-u8-cmp.c
+  tests/unistr/test-u8-cmp2.c
+  tests/unistr/test-u8-cpy-alloc.c
+  tests/unistr/test-u8-cpy.c
+  tests/unistr/test-u8-mblen.c
+  tests/unistr/test-u8-mbsnlen.c
+  tests/unistr/test-u8-mbtouc-unsafe.c
+  tests/unistr/test-u8-mbtouc.c
+  tests/unistr/test-u8-mbtouc.h
+  tests/unistr/test-u8-mbtoucr.c
+  tests/unistr/test-u8-move.c
+  tests/unistr/test-u8-next.c
+  tests/unistr/test-u8-prev.c
+  tests/unistr/test-u8-set.c
+  tests/unistr/test-u8-stpcpy.c
+  tests/unistr/test-u8-stpncpy.c
+  tests/unistr/test-u8-strcat.c
+  tests/unistr/test-u8-strcmp.c
+  tests/unistr/test-u8-strcmp.h
+  tests/unistr/test-u8-strcoll.c
+  tests/unistr/test-u8-strcpy.c
+  tests/unistr/test-u8-strdup.c
+  tests/unistr/test-u8-strlen.c
+  tests/unistr/test-u8-strmblen.c
+  tests/unistr/test-u8-strmbtouc.c
+  tests/unistr/test-u8-strncat.c
+  tests/unistr/test-u8-strncmp.c
+  tests/unistr/test-u8-strncpy.c
+  tests/unistr/test-u8-strnlen.c
+  tests/unistr/test-u8-to-u16.c
+  tests/unistr/test-u8-to-u32.c
+  tests/unistr/test-u8-uctomb.c
   tests/uniwbrk/test-u16-wordbreaks.c
   tests/uniwbrk/test-u32-wordbreaks.c
   tests/uniwbrk/test-u8-wordbreaks.c
@@ -1605,13 +3440,16 @@ AC_DEFUN([gl_FILE_LIST], [
   tests=lib/error.h
   tests=lib/exitfail.c
   tests=lib/exitfail.h
-  tests=lib/fcntl.in.h
+  tests=lib/getpagesize.c
   tests=lib/gettext.h
+  tests=lib/glthread/thread.c
+  tests=lib/glthread/thread.h
+  tests=lib/glthread/yield.h
   tests=lib/intprops.h
   tests=lib/locale.in.h
-  tests=lib/open.c
   tests=lib/progname.c
   tests=lib/progname.h
+  tests=lib/putenv.c
   tests=lib/setenv.c
   tests=lib/strerror.c
   tests=lib/unsetenv.c
diff --git a/gnulib-m4/iconv.m4 b/gnulib-m4/iconv.m4
index ce21b0b8..f46ff142 100644
--- a/gnulib-m4/iconv.m4
+++ b/gnulib-m4/iconv.m4
@@ -1,5 +1,5 @@
-# iconv.m4 serial AM8 (gettext-0.18)
-dnl Copyright (C) 2000-2002, 2007-2009 Free Software Foundation, Inc.
+# iconv.m4 serial 9 (gettext-0.18)
+dnl Copyright (C) 2000-2002, 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -58,7 +58,7 @@ AC_DEFUN([AM_ICONV_LINK],
   ])
   if test "$am_cv_func_iconv" = yes; then
     AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [
-      dnl This tests against bugs in AIX 5.1 and HP-UX 11.11.
+      dnl This tests against bugs in AIX 5.1, HP-UX 11.11, Solaris 10.
       am_save_LIBS="$LIBS"
       if test $am_cv_lib_iconv = yes; then
         LIBS="$LIBS $LIBICONV"
@@ -87,6 +87,25 @@ int main ()
           return 1;
       }
   }
+  /* Test against Solaris 10 bug: Failures are not distinguishable from
+     successful returns.  */
+  {
+    iconv_t cd_ascii_to_88591 = iconv_open ("ISO8859-1", "646");
+    if (cd_ascii_to_88591 != (iconv_t)(-1))
+      {
+        static const char input[] = "\263";
+        char buf[10];
+        const char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_ascii_to_88591,
+                            (char **) &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res == 0)
+          return 1;
+      }
+  }
 #if 0 /* This bug could be worked around by the caller.  */
   /* Test against HP-UX 11.11 bug: Positive return value instead of 0.  */
   {
diff --git a/gnulib-m4/iconv_h.m4 b/gnulib-m4/iconv_h.m4
index bc05b055..7366cb98 100644
--- a/gnulib-m4/iconv_h.m4
+++ b/gnulib-m4/iconv_h.m4
@@ -1,5 +1,5 @@
-# iconv_h.m4 serial 4
-dnl Copyright (C) 2007-2008 Free Software Foundation, Inc.
+# iconv_h.m4 serial 6
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -7,6 +7,9 @@ dnl with or without modifications, as long as this notice is preserved.
 AC_DEFUN([gl_ICONV_H],
 [
   AC_REQUIRE([gl_ICONV_H_DEFAULTS])
+
+  dnl Execute this unconditionally, because ICONV_H may be set by other
+  dnl modules, after this code is executed.
   gl_CHECK_NEXT_HEADERS([iconv.h])
 ])
 
@@ -21,7 +24,7 @@ AC_DEFUN([gl_ICONV_MODULE_INDICATOR],
 [
   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
   AC_REQUIRE([gl_ICONV_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])
 
 AC_DEFUN([gl_ICONV_H_DEFAULTS],
diff --git a/gnulib-m4/iconv_open.m4 b/gnulib-m4/iconv_open.m4
index c7b948e9..60f62ca5 100644
--- a/gnulib-m4/iconv_open.m4
+++ b/gnulib-m4/iconv_open.m4
@@ -1,5 +1,5 @@
-# iconv_open.m4 serial 5
-dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
+# iconv_open.m4 serial 7
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -10,6 +10,8 @@ AC_DEFUN([gl_FUNC_ICONV_OPEN],
   AC_REQUIRE([AC_CANONICAL_HOST])
   AC_REQUIRE([gl_ICONV_H_DEFAULTS])
   if test "$am_cv_func_iconv" = yes; then
+    dnl Provide the <iconv.h> override, for the sake of the C++ aliases.
+    gl_REPLACE_ICONV_H
     dnl Test whether iconv_open accepts standardized encoding names.
     dnl We know that GNU libiconv and GNU libc do.
     AC_EGREP_CPP([gnu_iconv], [
@@ -21,10 +23,11 @@ AC_DEFUN([gl_FUNC_ICONV_OPEN],
     if test $gl_func_iconv_gnu = no; then
       iconv_flavor=
       case "$host_os" in
-        aix*)  iconv_flavor=ICONV_FLAVOR_AIX ;;
-        irix*) iconv_flavor=ICONV_FLAVOR_IRIX ;;
-        hpux*) iconv_flavor=ICONV_FLAVOR_HPUX ;;
-        osf*)  iconv_flavor=ICONV_FLAVOR_OSF ;;
+        aix*)     iconv_flavor=ICONV_FLAVOR_AIX ;;
+        irix*)    iconv_flavor=ICONV_FLAVOR_IRIX ;;
+        hpux*)    iconv_flavor=ICONV_FLAVOR_HPUX ;;
+        osf*)     iconv_flavor=ICONV_FLAVOR_OSF ;;
+        solaris*) iconv_flavor=ICONV_FLAVOR_SOLARIS ;;
       esac
       if test -n "$iconv_flavor"; then
         AC_DEFINE_UNQUOTED([ICONV_FLAVOR], [$iconv_flavor],
@@ -89,8 +92,8 @@ int main ()
     outptr = buf;
     outbytesleft = sizeof (buf);
     res = iconv (cd,
-		 (ICONV_CONST char **) &inptr, &inbytesleft,
-		 &outptr, &outbytesleft);
+                 (ICONV_CONST char **) &inptr, &inbytesleft,
+                 &outptr, &outbytesleft);
     ASSERT (res == 0 && inbytesleft == 0);
     ASSERT (outptr == buf + (sizeof (expected) - 1));
     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
@@ -116,8 +119,8 @@ int main ()
     outptr = buf;
     outbytesleft = sizeof (buf);
     res = iconv (cd,
-		 (ICONV_CONST char **) &inptr, &inbytesleft,
-		 &outptr, &outbytesleft);
+                 (ICONV_CONST char **) &inptr, &inbytesleft,
+                 &outptr, &outbytesleft);
     ASSERT (res == 0 && inbytesleft == 0);
     ASSERT (outptr == buf + (sizeof (expected) - 1));
     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
@@ -143,8 +146,8 @@ int main ()
     outptr = buf;
     outbytesleft = sizeof (buf);
     res = iconv (cd,
-		 (ICONV_CONST char **) &inptr, &inbytesleft,
-		 &outptr, &outbytesleft);
+                 (ICONV_CONST char **) &inptr, &inbytesleft,
+                 &outptr, &outbytesleft);
     ASSERT (res == 0 && inbytesleft == 0);
     ASSERT (outptr == buf + (sizeof (expected) - 1));
     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
@@ -170,8 +173,8 @@ int main ()
     outptr = buf;
     outbytesleft = sizeof (buf);
     res = iconv (cd,
-		 (ICONV_CONST char **) &inptr, &inbytesleft,
-		 &outptr, &outbytesleft);
+                 (ICONV_CONST char **) &inptr, &inbytesleft,
+                 &outptr, &outbytesleft);
     ASSERT (res == 0 && inbytesleft == 0);
     ASSERT (outptr == buf + (sizeof (expected) - 1));
     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
@@ -198,8 +201,8 @@ int main ()
     outptr = buf;
     outbytesleft = sizeof (buf);
     res = iconv (cd,
-		 (ICONV_CONST char **) &inptr, &inbytesleft,
-		 &outptr, &outbytesleft);
+                 (ICONV_CONST char **) &inptr, &inbytesleft,
+                 &outptr, &outbytesleft);
     ASSERT (res == 0 && inbytesleft == 0);
     ASSERT (outptr == buf + (sizeof (expected) - 1));
     ASSERT (memcmp (buf, expected, sizeof (expected) - 1) == 0);
diff --git a/gnulib-m4/include_next.m4 b/gnulib-m4/include_next.m4
index 5e22ded9..c7e0672f 100644
--- a/gnulib-m4/include_next.m4
+++ b/gnulib-m4/include_next.m4
@@ -1,5 +1,5 @@
 # include_next.m4 serial 14
-dnl Copyright (C) 2006-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -109,11 +109,11 @@ EOF
 # be
 # '"///usr/include/foo.h"', or whatever other absolute file name is suitable.
 # That way, a header file with the following line:
-#	#@INCLUDE_NEXT@ @NEXT_FOO_H@
+#       #@INCLUDE_NEXT@ @NEXT_FOO_H@
 # or
-#	#@INCLUDE_NEXT_AS_FIRST_DIRECTIVE@ @NEXT_AS_FIRST_DIRECTIVE_FOO_H@
+#       #@INCLUDE_NEXT_AS_FIRST_DIRECTIVE@ @NEXT_AS_FIRST_DIRECTIVE_FOO_H@
 # behaves (after sed substitution) as if it contained
-#	#include_next <foo.h>
+#       #include_next <foo.h>
 # even if the compiler does not support include_next.
 # The three "///" are to pacify Sun C 5.8, which otherwise would say
 # "warning: #include of /usr/include/... may be non-portable".
@@ -129,46 +129,46 @@ AC_DEFUN([gl_CHECK_NEXT_HEADERS],
 
   m4_foreach_w([gl_HEADER_NAME], [$1],
     [AS_VAR_PUSHDEF([gl_next_header],
-		    [gl_cv_next_]m4_defn([gl_HEADER_NAME]))
+                    [gl_cv_next_]m4_defn([gl_HEADER_NAME]))
      if test $gl_cv_have_include_next = yes; then
        AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
      else
        AC_CACHE_CHECK(
-	 [absolute name of <]m4_defn([gl_HEADER_NAME])[>],
-	 m4_defn([gl_next_header]),
-	 [AS_VAR_PUSHDEF([gl_header_exists],
-			 [ac_cv_header_]m4_defn([gl_HEADER_NAME]))
-	  if test AS_VAR_GET(gl_header_exists) = yes; then
-	    AC_LANG_CONFTEST(
-	      [AC_LANG_SOURCE(
-		 [[#include <]]m4_dquote(m4_defn([gl_HEADER_NAME]))[[>]]
-	       )])
-	    dnl AIX "xlc -E" and "cc -E" omit #line directives for header files
-	    dnl that contain only a #include of other header files and no
-	    dnl non-comment tokens of their own. This leads to a failure to
-	    dnl detect the absolute name of <dirent.h>, <signal.h>, <poll.h>
-	    dnl and others. The workaround is to force preservation of comments
-	    dnl through option -C. This ensures all necessary #line directives
-	    dnl are present. GCC supports option -C as well.
-	    case "$host_os" in
-	      aix*) gl_absname_cpp="$ac_cpp -C" ;;
-	      *)    gl_absname_cpp="$ac_cpp" ;;
-	    esac
-	    dnl eval is necessary to expand gl_absname_cpp.
-	    dnl Ultrix and Pyramid sh refuse to redirect output of eval,
-	    dnl so use subshell.
-	    AS_VAR_SET([gl_next_header],
-	      ['"'`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
-	       sed -n '\#/]m4_defn([gl_HEADER_NAME])[#{
-		 s#.*"\(.*/]m4_defn([gl_HEADER_NAME])[\)".*#\1#
-		 s#^/[^/]#//&#
-		 p
-		 q
-	       }'`'"'])
-	  else
-	    AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
-	  fi
-	  AS_VAR_POPDEF([gl_header_exists])])
+         [absolute name of <]m4_defn([gl_HEADER_NAME])[>],
+         m4_defn([gl_next_header]),
+         [AS_VAR_PUSHDEF([gl_header_exists],
+                         [ac_cv_header_]m4_defn([gl_HEADER_NAME]))
+          if test AS_VAR_GET(gl_header_exists) = yes; then
+            AC_LANG_CONFTEST(
+              [AC_LANG_SOURCE(
+                 [[#include <]]m4_dquote(m4_defn([gl_HEADER_NAME]))[[>]]
+               )])
+            dnl AIX "xlc -E" and "cc -E" omit #line directives for header files
+            dnl that contain only a #include of other header files and no
+            dnl non-comment tokens of their own. This leads to a failure to
+            dnl detect the absolute name of <dirent.h>, <signal.h>, <poll.h>
+            dnl and others. The workaround is to force preservation of comments
+            dnl through option -C. This ensures all necessary #line directives
+            dnl are present. GCC supports option -C as well.
+            case "$host_os" in
+              aix*) gl_absname_cpp="$ac_cpp -C" ;;
+              *)    gl_absname_cpp="$ac_cpp" ;;
+            esac
+            dnl eval is necessary to expand gl_absname_cpp.
+            dnl Ultrix and Pyramid sh refuse to redirect output of eval,
+            dnl so use subshell.
+            AS_VAR_SET([gl_next_header],
+              ['"'`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
+               sed -n '\#/]m4_defn([gl_HEADER_NAME])[#{
+                 s#.*"\(.*/]m4_defn([gl_HEADER_NAME])[\)".*#\1#
+                 s#^/[^/]#//&#
+                 p
+                 q
+               }'`'"'])
+          else
+            AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
+          fi
+          AS_VAR_POPDEF([gl_header_exists])])
      fi
      AC_SUBST(
        AS_TR_CPP([NEXT_]m4_defn([gl_HEADER_NAME])),
diff --git a/gnulib-m4/inline.m4 b/gnulib-m4/inline.m4
index cee51099..4ef768de 100644
--- a/gnulib-m4/inline.m4
+++ b/gnulib-m4/inline.m4
@@ -1,5 +1,5 @@
 # inline.m4 serial 4
-dnl Copyright (C) 2006, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/intlmacosx.m4 b/gnulib-m4/intlmacosx.m4
index c24837c4..dd910259 100644
--- a/gnulib-m4/intlmacosx.m4
+++ b/gnulib-m4/intlmacosx.m4
@@ -1,5 +1,5 @@
 # intlmacosx.m4 serial 3 (gettext-0.18)
-dnl Copyright (C) 2004-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/intmax_t.m4 b/gnulib-m4/intmax_t.m4
index 264cb571..975caac5 100644
--- a/gnulib-m4/intmax_t.m4
+++ b/gnulib-m4/intmax_t.m4
@@ -1,5 +1,6 @@
 # intmax_t.m4 serial 7
-dnl Copyright (C) 1997-2004, 2006-2007, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 1997-2004, 2006-2007, 2009-2010 Free Software Foundation,
+dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/inttypes_h.m4 b/gnulib-m4/inttypes_h.m4
index f4ca1602..782d77ed 100644
--- a/gnulib-m4/inttypes_h.m4
+++ b/gnulib-m4/inttypes_h.m4
@@ -1,5 +1,5 @@
 # inttypes_h.m4 serial 9
-dnl Copyright (C) 1997-2004, 2006, 2008, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 1997-2004, 2006, 2008-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/isnand.m4 b/gnulib-m4/isnand.m4
index c823c2ce..cd916284 100644
--- a/gnulib-m4/isnand.m4
+++ b/gnulib-m4/isnand.m4
@@ -1,5 +1,5 @@
 # isnand.m4 serial 6
-dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/isnanf.m4 b/gnulib-m4/isnanf.m4
index 2ad8f945..1509fb44 100644
--- a/gnulib-m4/isnanf.m4
+++ b/gnulib-m4/isnanf.m4
@@ -1,5 +1,5 @@
 # isnanf.m4 serial 10
-dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/isnanl.m4 b/gnulib-m4/isnanl.m4
index e3029f5c..25daecae 100644
--- a/gnulib-m4/isnanl.m4
+++ b/gnulib-m4/isnanl.m4
@@ -1,5 +1,5 @@
 # isnanl.m4 serial 12
-dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/lcmessage.m4 b/gnulib-m4/lcmessage.m4
index fa8e4167..1a705431 100644
--- a/gnulib-m4/lcmessage.m4
+++ b/gnulib-m4/lcmessage.m4
@@ -1,5 +1,6 @@
 # lcmessage.m4 serial 6 (gettext-0.18)
-dnl Copyright (C) 1995-2002, 2004-2005, 2008, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 1995-2002, 2004-2005, 2008-2010 Free Software Foundation,
+dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/ldexpl.m4 b/gnulib-m4/ldexpl.m4
index 8ba85c61..d84b50ff 100644
--- a/gnulib-m4/ldexpl.m4
+++ b/gnulib-m4/ldexpl.m4
@@ -1,5 +1,5 @@
-# ldexpl.m4 serial 4
-dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
+# ldexpl.m4 serial 5
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -7,54 +7,56 @@ dnl with or without modifications, as long as this notice is preserved.
 AC_DEFUN([gl_FUNC_LDEXPL],
 [
   AC_REQUIRE([gl_MATH_H_DEFAULTS])
+  dnl Check whether it's declared.
+  dnl MacOS X 10.3 has ldexpl() in libc but doesn't declare it in <math.h>.
+  AC_CHECK_DECL([ldexpl], , [HAVE_DECL_LDEXPL=0], [#include <math.h>])
   LDEXPL_LIBM=
-  AC_CACHE_CHECK([whether ldexpl() can be used without linking with libm],
-    [gl_cv_func_ldexpl_no_libm],
-    [
-      AC_TRY_LINK([#include <math.h>
-                   long double x;],
-                  [return ldexpl (x, -1) > 0;],
-        [gl_cv_func_ldexpl_no_libm=yes],
-        [gl_cv_func_ldexpl_no_libm=no])
-    ])
-  if test $gl_cv_func_ldexpl_no_libm = no; then
-    AC_CACHE_CHECK([whether ldexpl() can be used with libm],
-      [gl_cv_func_ldexpl_in_libm],
+  if test $HAVE_DECL_LDEXPL = 1; then
+    AC_CACHE_CHECK([whether ldexpl() can be used without linking with libm],
+      [gl_cv_func_ldexpl_no_libm],
       [
-        save_LIBS="$LIBS"
-        LIBS="$LIBS -lm"
         AC_TRY_LINK([#include <math.h>
                      long double x;],
                     [return ldexpl (x, -1) > 0;],
-          [gl_cv_func_ldexpl_in_libm=yes],
-          [gl_cv_func_ldexpl_in_libm=no])
-        LIBS="$save_LIBS"
+          [gl_cv_func_ldexpl_no_libm=yes],
+          [gl_cv_func_ldexpl_no_libm=no])
       ])
-    if test $gl_cv_func_ldexpl_in_libm = yes; then
-      LDEXPL_LIBM=-lm
+    if test $gl_cv_func_ldexpl_no_libm = no; then
+      AC_CACHE_CHECK([whether ldexpl() can be used with libm],
+        [gl_cv_func_ldexpl_in_libm],
+        [
+          save_LIBS="$LIBS"
+          LIBS="$LIBS -lm"
+          AC_TRY_LINK([#include <math.h>
+                       long double x;],
+                      [return ldexpl (x, -1) > 0;],
+            [gl_cv_func_ldexpl_in_libm=yes],
+            [gl_cv_func_ldexpl_in_libm=no])
+          LIBS="$save_LIBS"
+        ])
+      if test $gl_cv_func_ldexpl_in_libm = yes; then
+        LDEXPL_LIBM=-lm
+      fi
+    fi
+    if test $gl_cv_func_ldexpl_no_libm = yes \
+       || test $gl_cv_func_ldexpl_in_libm = yes; then
+      save_LIBS="$LIBS"
+      LIBS="$LIBS $LDEXPL_LIBM"
+      gl_FUNC_LDEXPL_WORKS
+      LIBS="$save_LIBS"
+      case "$gl_cv_func_ldexpl_works" in
+        *yes) gl_func_ldexpl=yes ;;
+        *)    gl_func_ldexpl=no; REPLACE_LDEXPL=1; LDEXPL_LIBM= ;;
+      esac
+    else
+      gl_func_ldexpl=no
+    fi
+    if test $gl_func_ldexpl = yes; then
+      AC_DEFINE([HAVE_LDEXPL], [1],
+        [Define if the ldexpl() function is available.])
     fi
   fi
-  if test $gl_cv_func_ldexpl_no_libm = yes \
-     || test $gl_cv_func_ldexpl_in_libm = yes; then
-    save_LIBS="$LIBS"
-    LIBS="$LIBS $LDEXPL_LIBM"
-    gl_FUNC_LDEXPL_WORKS
-    LIBS="$save_LIBS"
-    case "$gl_cv_func_ldexpl_works" in
-      *yes) gl_func_ldexpl=yes ;;
-      *)    gl_func_ldexpl=no; REPLACE_LDEXPL=1; LDEXPL_LIBM= ;;
-    esac
-  else
-    gl_func_ldexpl=no
-  fi
-  if test $gl_func_ldexpl = yes; then
-    AC_DEFINE([HAVE_LDEXPL], [1],
-      [Define if the ldexpl() function is available.])
-    dnl Also check whether it's declared.
-    dnl MacOS X 10.3 has ldexpl() in libc but doesn't declare it in <math.h>.
-    AC_CHECK_DECL([ldexpl], , [HAVE_DECL_LDEXPL=0], [#include <math.h>])
-  else
-    HAVE_DECL_LDEXPL=0
+  if test $HAVE_DECL_LDEXPL = 0 || test $gl_func_ldexpl = no; then
     AC_LIBOBJ([ldexpl])
   fi
   AC_SUBST([LDEXPL_LIBM])
diff --git a/gnulib-m4/lib-ld.m4 b/gnulib-m4/lib-ld.m4
index e4863f2c..ebb30528 100644
--- a/gnulib-m4/lib-ld.m4
+++ b/gnulib-m4/lib-ld.m4
@@ -1,5 +1,5 @@
 # lib-ld.m4 serial 4 (gettext-0.18)
-dnl Copyright (C) 1996-2003, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 1996-2003, 2009-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -59,7 +59,7 @@ if test "$GCC" = yes; then
       # Canonicalize the path of ld
       ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
       while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
-	ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
+        ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
       done
       test -z "$LD" && LD="$ac_prog"
       ;;
@@ -89,9 +89,9 @@ AC_CACHE_VAL([acl_cv_path_LD],
       # Break only if it was the GNU/non-GNU ld that we prefer.
       case `"$acl_cv_path_LD" -v 2>&1 < /dev/null` in
       *GNU* | *'with BFD'*)
-	test "$with_gnu_ld" != no && break ;;
+        test "$with_gnu_ld" != no && break ;;
       *)
-	test "$with_gnu_ld" != yes && break ;;
+        test "$with_gnu_ld" != yes && break ;;
       esac
     fi
   done
diff --git a/gnulib-m4/lib-link.m4 b/gnulib-m4/lib-link.m4
index 2f8b7ff3..c73bd8e3 100644
--- a/gnulib-m4/lib-link.m4
+++ b/gnulib-m4/lib-link.m4
@@ -1,5 +1,5 @@
-# lib-link.m4 serial 20 (gettext-0.18)
-dnl Copyright (C) 2001-2009 Free Software Foundation, Inc.
+# lib-link.m4 serial 21 (gettext-0.18)
+dnl Copyright (C) 2001-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -74,7 +74,17 @@ AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
 
   AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
     ac_save_LIBS="$LIBS"
-    LIBS="$LIBS $LIB[]NAME"
+    dnl If $LIB[]NAME contains some -l options, add it to the end of LIBS,
+    dnl because these -l options might require -L options that are present in
+    dnl LIBS. -l options benefit only from the -L options listed before it.
+    dnl Otherwise, add it to the front of LIBS, because it may be a static
+    dnl library that depends on another static library that is present in LIBS.
+    dnl Static libraries benefit only from the static libraries listed after
+    dnl it.
+    case " $LIB[]NAME" in
+      *" -l"*) LIBS="$LIBS $LIB[]NAME" ;;
+      *)       LIBS="$LIB[]NAME $LIBS" ;;
+    esac
     AC_TRY_LINK([$3], [$4],
       [ac_cv_lib[]Name=yes],
       [ac_cv_lib[]Name='m4_if([$5], [], [no], [[$5]])'])
diff --git a/gnulib-m4/lib-prefix.m4 b/gnulib-m4/lib-prefix.m4
index 4b7ee335..1601ceae 100644
--- a/gnulib-m4/lib-prefix.m4
+++ b/gnulib-m4/lib-prefix.m4
@@ -1,5 +1,5 @@
 # lib-prefix.m4 serial 7 (gettext-0.18)
-dnl Copyright (C) 2001-2005, 2008-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2005, 2008-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/localcharset.m4 b/gnulib-m4/localcharset.m4
index e9601041..ee2e801b 100644
--- a/gnulib-m4/localcharset.m4
+++ b/gnulib-m4/localcharset.m4
@@ -1,5 +1,5 @@
-# localcharset.m4 serial 6
-dnl Copyright (C) 2002, 2004, 2006, 2009 Free Software Foundation, Inc.
+# localcharset.m4 serial 7
+dnl Copyright (C) 2002, 2004, 2006, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -8,6 +8,7 @@ AC_DEFUN([gl_LOCALCHARSET],
 [
   dnl Prerequisites of lib/localcharset.c.
   AC_REQUIRE([AM_LANGINFO_CODESET])
+  AC_REQUIRE([gl_FCNTL_O_FLAGS])
   AC_CHECK_DECLS_ONCE([getc_unlocked])
 
   dnl Prerequisites of the lib/Makefile.am snippet.
diff --git a/gnulib-m4/locale-fr.m4 b/gnulib-m4/locale-fr.m4
index 653a5bc2..001f5390 100644
--- a/gnulib-m4/locale-fr.m4
+++ b/gnulib-m4/locale-fr.m4
@@ -1,5 +1,5 @@
 # locale-fr.m4 serial 11
-dnl Copyright (C) 2003, 2005-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/locale-ja.m4 b/gnulib-m4/locale-ja.m4
index 93605764..0eedaf14 100644
--- a/gnulib-m4/locale-ja.m4
+++ b/gnulib-m4/locale-ja.m4
@@ -1,5 +1,5 @@
 # locale-ja.m4 serial 7
-dnl Copyright (C) 2003, 2005-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/locale-tr.m4 b/gnulib-m4/locale-tr.m4
index 6162f65c..404c063c 100644
--- a/gnulib-m4/locale-tr.m4
+++ b/gnulib-m4/locale-tr.m4
@@ -1,5 +1,5 @@
 # locale-tr.m4 serial 6
-dnl Copyright (C) 2003, 2005-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/locale-zh.m4 b/gnulib-m4/locale-zh.m4
index 36a5f1df..777fd141 100644
--- a/gnulib-m4/locale-zh.m4
+++ b/gnulib-m4/locale-zh.m4
@@ -1,5 +1,5 @@
 # locale-zh.m4 serial 6
-dnl Copyright (C) 2003, 2005-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/locale_h.m4 b/gnulib-m4/locale_h.m4
index 86123670..18a119b8 100644
--- a/gnulib-m4/locale_h.m4
+++ b/gnulib-m4/locale_h.m4
@@ -1,26 +1,92 @@
-# locale_h.m4 serial 3
-dnl Copyright (C) 2007, 2009 Free Software Foundation, Inc.
+# locale_h.m4 serial 10
+dnl Copyright (C) 2007, 2009-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
 AC_DEFUN([gl_LOCALE_H],
 [
-  AC_CACHE_CHECK([whether locale.h conforms to POSIX],
-    [gl_cv_header_working_locale_h],
-    [AC_TRY_COMPILE([#include <locale.h>
-int x = LC_MESSAGES;], [],
-       [gl_cv_header_working_locale_h=yes],
-       [gl_cv_header_working_locale_h=no])])
+  dnl Use AC_REQUIRE here, so that the default behavior below is expanded
+  dnl once only, before all statements that occur in other macros.
+  AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
+
+  dnl Persuade glibc <locale.h> to define locale_t.
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
 
   dnl If <stddef.h> is replaced, then <locale.h> must also be replaced.
   AC_REQUIRE([gl_STDDEF_H])
 
-  if test $gl_cv_header_working_locale_h = yes && test -z "$STDDEF_H"; then
-    LOCALE_H=
+  AC_CACHE_CHECK([whether locale.h conforms to POSIX:2001],
+    [gl_cv_header_locale_h_posix2001],
+    [AC_TRY_COMPILE([#include <locale.h>
+int x = LC_MESSAGES;], [],
+       [gl_cv_header_locale_h_posix2001=yes],
+       [gl_cv_header_locale_h_posix2001=no])])
+
+  dnl Check for <xlocale.h>.
+  AC_CHECK_HEADERS_ONCE([xlocale.h])
+  if test $ac_cv_header_xlocale_h = yes; then
+    HAVE_XLOCALE_H=1
+    dnl Check whether use of locale_t requires inclusion of <xlocale.h>,
+    dnl e.g. on MacOS X 10.5. If <locale.h> does not define locale_t by
+    dnl itself, we assume that <xlocale.h> will do so.
+    AC_CACHE_CHECK([whether locale.h defines locale_t],
+      [gl_cv_header_locale_has_locale_t],
+      [AC_TRY_COMPILE([#include <locale.h>
+locale_t x;], [],
+         [gl_cv_header_locale_has_locale_t=yes],
+         [gl_cv_header_locale_has_locale_t=no])
+      ])
+    if test $gl_cv_header_locale_has_locale_t = yes; then
+      gl_cv_header_locale_h_needs_xlocale_h=no
+    else
+      gl_cv_header_locale_h_needs_xlocale_h=yes
+    fi
   else
-    gl_CHECK_NEXT_HEADERS([locale.h])
-    LOCALE_H=locale.h
+    HAVE_XLOCALE_H=0
+    gl_cv_header_locale_h_needs_xlocale_h=no
   fi
-  AC_SUBST([LOCALE_H])
+  AC_SUBST([HAVE_XLOCALE_H])
+
+  dnl <locale.h> is always overridden, because of GNULIB_POSIXCHECK.
+  gl_CHECK_NEXT_HEADERS([locale.h])
+
+  if test -n "$STDDEF_H" \
+     || test $gl_cv_header_locale_h_posix2001 = no \
+     || test $gl_cv_header_locale_h_needs_xlocale_h = yes; then
+    gl_REPLACE_LOCALE_H
+  fi
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <locale.h>
+/* Some systems provide declarations in a non-standard header.  */
+#if HAVE_XLOCALE_H
+# include <xlocale.h>
+#endif
+   ]], [duplocale])
+])
+
+dnl Unconditionally enables the replacement of <locale.h>.
+AC_DEFUN([gl_REPLACE_LOCALE_H],
+[
+  dnl This is a no-op, because <locale.h> is always overridden.
+  :
+])
+
+AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
+[
+  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+  AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+AC_DEFUN([gl_LOCALE_H_DEFAULTS],
+[
+  GNULIB_DUPLOCALE=0;  AC_SUBST([GNULIB_DUPLOCALE])
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_DUPLOCALE=1;    AC_SUBST([HAVE_DUPLOCALE])
+  REPLACE_DUPLOCALE=0; AC_SUBST([REPLACE_DUPLOCALE])
 ])
diff --git a/gnulib-m4/localename.m4 b/gnulib-m4/localename.m4
index 94e9705d..9ff5eea2 100644
--- a/gnulib-m4/localename.m4
+++ b/gnulib-m4/localename.m4
@@ -1,5 +1,5 @@
-# localename.m4 serial 1
-dnl Copyright (C) 2007 Free Software Foundation, Inc.
+# localename.m4 serial 2
+dnl Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -8,5 +8,5 @@ AC_DEFUN([gl_LOCALENAME],
 [
   AC_REQUIRE([gt_LC_MESSAGES])
   AC_REQUIRE([gt_INTL_MACOSX])
-  AC_CHECK_FUNCS([setlocale])
+  AC_CHECK_FUNCS([setlocale uselocale])
 ])
diff --git a/gnulib-m4/lock.m4 b/gnulib-m4/lock.m4
new file mode 100644
index 00000000..9da8465e
--- /dev/null
+++ b/gnulib-m4/lock.m4
@@ -0,0 +1,37 @@
+# lock.m4 serial 10 (gettext-0.18)
+dnl Copyright (C) 2005-2010 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([gl_LOCK],
+[
+  AC_REQUIRE([gl_THREADLIB])
+  if test "$gl_threads_api" = posix; then
+    # OSF/1 4.0 and MacOS X 10.1 lack the pthread_rwlock_t type and the
+    # pthread_rwlock_* functions.
+    AC_CHECK_TYPE([pthread_rwlock_t],
+      [AC_DEFINE([HAVE_PTHREAD_RWLOCK], [1],
+         [Define if the POSIX multithreading library has read/write locks.])],
+      [],
+      [#include <pthread.h>])
+    # glibc defines PTHREAD_MUTEX_RECURSIVE as enum, not as a macro.
+    AC_TRY_COMPILE([#include <pthread.h>],
+      [#if __FreeBSD__ == 4
+error "No, in FreeBSD 4.0 recursive mutexes actually don't work."
+#else
+int x = (int)PTHREAD_MUTEX_RECURSIVE;
+return !x;
+#endif],
+      [AC_DEFINE([HAVE_PTHREAD_MUTEX_RECURSIVE], [1],
+         [Define if the <pthread.h> defines PTHREAD_MUTEX_RECURSIVE.])])
+  fi
+  gl_PREREQ_LOCK
+])
+
+# Prerequisites of lib/lock.c.
+AC_DEFUN([gl_PREREQ_LOCK], [
+  AC_REQUIRE([AC_C_INLINE])
+])
diff --git a/gnulib-m4/longlong.m4 b/gnulib-m4/longlong.m4
index eedc8d56..cca3c1a9 100644
--- a/gnulib-m4/longlong.m4
+++ b/gnulib-m4/longlong.m4
@@ -1,5 +1,5 @@
 # longlong.m4 serial 14
-dnl Copyright (C) 1999-2007, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 1999-2007, 2009-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -20,30 +20,30 @@ AC_DEFUN([AC_TYPE_LONG_LONG_INT],
     [AC_LINK_IFELSE(
        [_AC_TYPE_LONG_LONG_SNIPPET],
        [dnl This catches a bug in Tandem NonStop Kernel (OSS) cc -O circa 2004.
-	dnl If cross compiling, assume the bug isn't important, since
-	dnl nobody cross compiles for this platform as far as we know.
-	AC_RUN_IFELSE(
-	  [AC_LANG_PROGRAM(
-	     [[@%:@include <limits.h>
-	       @%:@ifndef LLONG_MAX
-	       @%:@ define HALF \
-			(1LL << (sizeof (long long int) * CHAR_BIT - 2))
-	       @%:@ define LLONG_MAX (HALF - 1 + HALF)
-	       @%:@endif]],
-	     [[long long int n = 1;
-	       int i;
-	       for (i = 0; ; i++)
-		 {
-		   long long int m = n << i;
-		   if (m >> i != n)
-		     return 1;
-		   if (LLONG_MAX / 2 < m)
-		     break;
-		 }
-	       return 0;]])],
-	  [ac_cv_type_long_long_int=yes],
-	  [ac_cv_type_long_long_int=no],
-	  [ac_cv_type_long_long_int=yes])],
+        dnl If cross compiling, assume the bug isn't important, since
+        dnl nobody cross compiles for this platform as far as we know.
+        AC_RUN_IFELSE(
+          [AC_LANG_PROGRAM(
+             [[@%:@include <limits.h>
+               @%:@ifndef LLONG_MAX
+               @%:@ define HALF \
+                        (1LL << (sizeof (long long int) * CHAR_BIT - 2))
+               @%:@ define LLONG_MAX (HALF - 1 + HALF)
+               @%:@endif]],
+             [[long long int n = 1;
+               int i;
+               for (i = 0; ; i++)
+                 {
+                   long long int m = n << i;
+                   if (m >> i != n)
+                     return 1;
+                   if (LLONG_MAX / 2 < m)
+                     break;
+                 }
+               return 0;]])],
+          [ac_cv_type_long_long_int=yes],
+          [ac_cv_type_long_long_int=no],
+          [ac_cv_type_long_long_int=yes])],
        [ac_cv_type_long_long_int=no])])
   if test $ac_cv_type_long_long_int = yes; then
     AC_DEFINE([HAVE_LONG_LONG_INT], [1],
@@ -83,24 +83,24 @@ AC_DEFUN([_AC_TYPE_LONG_LONG_SNIPPET],
 [
   AC_LANG_PROGRAM(
     [[/* For now, do not test the preprocessor; as of 2007 there are too many
-	 implementations with broken preprocessors.  Perhaps this can
-	 be revisited in 2012.  In the meantime, code should not expect
-	 #if to work with literals wider than 32 bits.  */
+         implementations with broken preprocessors.  Perhaps this can
+         be revisited in 2012.  In the meantime, code should not expect
+         #if to work with literals wider than 32 bits.  */
       /* Test literals.  */
       long long int ll = 9223372036854775807ll;
       long long int nll = -9223372036854775807LL;
       unsigned long long int ull = 18446744073709551615ULL;
       /* Test constant expressions.   */
       typedef int a[((-9223372036854775807LL < 0 && 0 < 9223372036854775807ll)
-		     ? 1 : -1)];
+                     ? 1 : -1)];
       typedef int b[(18446744073709551615ULL <= (unsigned long long int) -1
-		     ? 1 : -1)];
+                     ? 1 : -1)];
       int i = 63;]],
     [[/* Test availability of runtime routines for shift and division.  */
       long long int llmax = 9223372036854775807ll;
       unsigned long long int ullmax = 18446744073709551615ull;
       return ((ll << 63) | (ll >> 63) | (ll < i) | (ll > i)
-	      | (llmax / ll) | (llmax % ll)
-	      | (ull << 63) | (ull >> 63) | (ull << i) | (ull >> i)
-	      | (ullmax / ull) | (ullmax % ull));]])
+              | (llmax / ll) | (llmax % ll)
+              | (ull << 63) | (ull >> 63) | (ull << i) | (ull >> i)
+              | (ullmax / ull) | (ullmax % ull));]])
 ])
diff --git a/gnulib-m4/malloc.m4 b/gnulib-m4/malloc.m4
index 80701716..910ac922 100644
--- a/gnulib-m4/malloc.m4
+++ b/gnulib-m4/malloc.m4
@@ -1,5 +1,5 @@
 # malloc.m4 serial 9
-dnl Copyright (C) 2007, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/malloca.m4 b/gnulib-m4/malloca.m4
index 2841ae83..e07c6d93 100644
--- a/gnulib-m4/malloca.m4
+++ b/gnulib-m4/malloca.m4
@@ -1,5 +1,6 @@
 # malloca.m4 serial 1
-dnl Copyright (C) 2003-2004, 2006-2007 Free Software Foundation, Inc.
+dnl Copyright (C) 2003-2004, 2006-2007, 2009-2010 Free Software Foundation,
+dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/math_h.m4 b/gnulib-m4/math_h.m4
index d941bc33..2d89ca3f 100644
--- a/gnulib-m4/math_h.m4
+++ b/gnulib-m4/math_h.m4
@@ -1,5 +1,5 @@
-# math_h.m4 serial 14
-dnl Copyright (C) 2007-2008 Free Software Foundation, Inc.
+# math_h.m4 serial 21
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -8,6 +8,8 @@ AC_DEFUN([gl_MATH_H],
 [
   AC_REQUIRE([gl_MATH_H_DEFAULTS])
   gl_CHECK_NEXT_HEADERS([math.h])
+  AC_REQUIRE([AC_C_INLINE])
+
   AC_CACHE_CHECK([whether NAN macro works], [gl_cv_header_math_nan_works],
     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <math.h>]],
       [[/* Solaris 10 has a broken definition of NAN.  Other platforms
@@ -15,9 +17,9 @@ AC_DEFUN([gl_MATH_H],
         test only needs to fail when NAN is provided but wrong.  */
          float f = 1.0f;
 #ifdef NAN
-	 f = NAN;
+         f = NAN;
 #endif
-	 return f == 0;]])],
+         return f == 0;]])],
       [gl_cv_header_math_nan_works=yes],
       [gl_cv_header_math_nan_works=no])])
   if test $gl_cv_header_math_nan_works = no; then
@@ -26,26 +28,39 @@ AC_DEFUN([gl_MATH_H],
   AC_CACHE_CHECK([whether HUGE_VAL works], [gl_cv_header_math_huge_val_works],
     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <math.h>]],
       [[/* Solaris 10 has a broken definition of HUGE_VAL.  */
-	 double d = HUGE_VAL;
-	 return d == 0;]])],
+         double d = HUGE_VAL;
+         return d == 0;]])],
       [gl_cv_header_math_huge_val_works=yes],
       [gl_cv_header_math_huge_val_works=no])])
   if test $gl_cv_header_math_huge_val_works = no; then
     REPLACE_HUGE_VAL=1
   fi
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <math.h>
+    ]], [acosl asinl atanl ceilf ceill cosl expl floorf floorl frexpl
+    ldexpl logb logl round roundf roundl sinl sqrtl tanl trunc truncf truncl])
 ])
 
 AC_DEFUN([gl_MATH_MODULE_INDICATOR],
 [
   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
   AC_REQUIRE([gl_MATH_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
 AC_DEFUN([gl_MATH_H_DEFAULTS],
 [
+  GNULIB_ACOSL=0;    AC_SUBST([GNULIB_ACOSL])
+  GNULIB_ASINL=0;    AC_SUBST([GNULIB_ASINL])
+  GNULIB_ATANL=0;    AC_SUBST([GNULIB_ATANL])
   GNULIB_CEILF=0;    AC_SUBST([GNULIB_CEILF])
   GNULIB_CEILL=0;    AC_SUBST([GNULIB_CEILL])
+  GNULIB_COSL=0;     AC_SUBST([GNULIB_COSL])
+  GNULIB_EXPL=0;     AC_SUBST([GNULIB_EXPL])
   GNULIB_FLOORF=0;   AC_SUBST([GNULIB_FLOORF])
   GNULIB_FLOORL=0;   AC_SUBST([GNULIB_FLOORL])
   GNULIB_FREXP=0;    AC_SUBST([GNULIB_FREXP])
@@ -57,31 +72,53 @@ AC_DEFUN([gl_MATH_H_DEFAULTS],
   GNULIB_ISNAND=0;   AC_SUBST([GNULIB_ISNAND])
   GNULIB_ISNANL=0;   AC_SUBST([GNULIB_ISNANL])
   GNULIB_LDEXPL=0;   AC_SUBST([GNULIB_LDEXPL])
-  GNULIB_MATHL=0;    AC_SUBST([GNULIB_MATHL])
+  GNULIB_LOGB=0;     AC_SUBST([GNULIB_LOGB])
+  GNULIB_LOGL=0;     AC_SUBST([GNULIB_LOGL])
   GNULIB_ROUND=0;    AC_SUBST([GNULIB_ROUND])
   GNULIB_ROUNDF=0;   AC_SUBST([GNULIB_ROUNDF])
   GNULIB_ROUNDL=0;   AC_SUBST([GNULIB_ROUNDL])
   GNULIB_SIGNBIT=0;  AC_SUBST([GNULIB_SIGNBIT])
+  GNULIB_SINL=0;     AC_SUBST([GNULIB_SINL])
+  GNULIB_SQRTL=0;    AC_SUBST([GNULIB_SQRTL])
+  GNULIB_TANL=0;     AC_SUBST([GNULIB_TANL])
   GNULIB_TRUNC=0;    AC_SUBST([GNULIB_TRUNC])
   GNULIB_TRUNCF=0;   AC_SUBST([GNULIB_TRUNCF])
   GNULIB_TRUNCL=0;   AC_SUBST([GNULIB_TRUNCL])
   dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_ACOSL=1;                AC_SUBST([HAVE_ACOSL])
+  HAVE_ASINL=1;                AC_SUBST([HAVE_ASINL])
+  HAVE_ATANL=1;                AC_SUBST([HAVE_ATANL])
+  HAVE_COSL=1;                 AC_SUBST([HAVE_COSL])
+  HAVE_EXPL=1;                 AC_SUBST([HAVE_EXPL])
   HAVE_ISNANF=1;               AC_SUBST([HAVE_ISNANF])
   HAVE_ISNAND=1;               AC_SUBST([HAVE_ISNAND])
   HAVE_ISNANL=1;               AC_SUBST([HAVE_ISNANL])
+  HAVE_LOGL=1;                 AC_SUBST([HAVE_LOGL])
+  HAVE_SINL=1;                 AC_SUBST([HAVE_SINL])
+  HAVE_SQRTL=1;                AC_SUBST([HAVE_SQRTL])
+  HAVE_TANL=1;                 AC_SUBST([HAVE_TANL])
   HAVE_DECL_ACOSL=1;           AC_SUBST([HAVE_DECL_ACOSL])
   HAVE_DECL_ASINL=1;           AC_SUBST([HAVE_DECL_ASINL])
   HAVE_DECL_ATANL=1;           AC_SUBST([HAVE_DECL_ATANL])
+  HAVE_DECL_CEILF=1;           AC_SUBST([HAVE_DECL_CEILF])
+  HAVE_DECL_CEILL=1;           AC_SUBST([HAVE_DECL_CEILL])
   HAVE_DECL_COSL=1;            AC_SUBST([HAVE_DECL_COSL])
   HAVE_DECL_EXPL=1;            AC_SUBST([HAVE_DECL_EXPL])
+  HAVE_DECL_FLOORF=1;          AC_SUBST([HAVE_DECL_FLOORF])
+  HAVE_DECL_FLOORL=1;          AC_SUBST([HAVE_DECL_FLOORL])
   HAVE_DECL_FREXPL=1;          AC_SUBST([HAVE_DECL_FREXPL])
   HAVE_DECL_LDEXPL=1;          AC_SUBST([HAVE_DECL_LDEXPL])
+  HAVE_DECL_LOGB=1;            AC_SUBST([HAVE_DECL_LOGB])
   HAVE_DECL_LOGL=1;            AC_SUBST([HAVE_DECL_LOGL])
+  HAVE_DECL_ROUND=1;           AC_SUBST([HAVE_DECL_ROUND])
+  HAVE_DECL_ROUNDF=1;          AC_SUBST([HAVE_DECL_ROUNDF])
+  HAVE_DECL_ROUNDL=1;          AC_SUBST([HAVE_DECL_ROUNDL])
   HAVE_DECL_SINL=1;            AC_SUBST([HAVE_DECL_SINL])
   HAVE_DECL_SQRTL=1;           AC_SUBST([HAVE_DECL_SQRTL])
   HAVE_DECL_TANL=1;            AC_SUBST([HAVE_DECL_TANL])
   HAVE_DECL_TRUNC=1;           AC_SUBST([HAVE_DECL_TRUNC])
   HAVE_DECL_TRUNCF=1;          AC_SUBST([HAVE_DECL_TRUNCF])
+  HAVE_DECL_TRUNCL=1;          AC_SUBST([HAVE_DECL_TRUNCL])
   REPLACE_CEILF=0;             AC_SUBST([REPLACE_CEILF])
   REPLACE_CEILL=0;             AC_SUBST([REPLACE_CEILL])
   REPLACE_FLOORF=0;            AC_SUBST([REPLACE_FLOORF])
diff --git a/gnulib-m4/mbchar.m4 b/gnulib-m4/mbchar.m4
index e73e2b4b..116ce7e5 100644
--- a/gnulib-m4/mbchar.m4
+++ b/gnulib-m4/mbchar.m4
@@ -1,5 +1,5 @@
-# mbchar.m4 serial 7
-dnl Copyright (C) 2005-2007 Free Software Foundation, Inc.
+# mbchar.m4 serial 8
+dnl Copyright (C) 2005-2007, 2009-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -10,4 +10,5 @@ dnl From Bruno Haible.
 AC_DEFUN([gl_MBCHAR],
 [
   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+  AC_REQUIRE([AC_C_INLINE])
 ])
diff --git a/gnulib-m4/mbiter.m4 b/gnulib-m4/mbiter.m4
index 88ba5694..34810507 100644
--- a/gnulib-m4/mbiter.m4
+++ b/gnulib-m4/mbiter.m4
@@ -1,5 +1,5 @@
-# mbiter.m4 serial 4
-dnl Copyright (C) 2005, 2008 Free Software Foundation, Inc.
+# mbiter.m4 serial 5
+dnl Copyright (C) 2005, 2008, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -9,6 +9,7 @@ dnl From Bruno Haible.
 
 AC_DEFUN([gl_MBITER],
 [
+  AC_REQUIRE([AC_C_INLINE])
   AC_REQUIRE([AC_TYPE_MBSTATE_T])
   dnl The following line is that so the user can test HAVE_MBRTOWC before
   dnl #include "mbiter.h" or "mbuiter.h". It can be removed in 2010.
diff --git a/gnulib-m4/mbrtowc.m4 b/gnulib-m4/mbrtowc.m4
index 2fddcc8a..606de5c9 100644
--- a/gnulib-m4/mbrtowc.m4
+++ b/gnulib-m4/mbrtowc.m4
@@ -1,5 +1,6 @@
-# mbrtowc.m4 serial 16
-dnl Copyright (C) 2001-2002, 2004-2005, 2008, 2009 Free Software Foundation, Inc.
+# mbrtowc.m4 serial 17
+dnl Copyright (C) 2001-2002, 2004-2005, 2008-2010 Free Software Foundation,
+dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -10,38 +11,39 @@ AC_DEFUN([gl_FUNC_MBRTOWC],
 
   AC_REQUIRE([AC_TYPE_MBSTATE_T])
   gl_MBSTATE_T_BROKEN
-  if test $REPLACE_MBSTATE_T = 1; then
-    REPLACE_MBRTOWC=1
-  fi
+
   AC_CHECK_FUNCS_ONCE([mbrtowc])
   if test $ac_cv_func_mbrtowc = no; then
     HAVE_MBRTOWC=0
-  fi
-  if test $HAVE_MBRTOWC != 0 && test $REPLACE_MBRTOWC != 1; then
-    gl_MBRTOWC_NULL_ARG
-    gl_MBRTOWC_RETVAL
-    gl_MBRTOWC_NUL_RETVAL
-    case "$gl_cv_func_mbrtowc_null_arg" in
-      *yes) ;;
-      *) AC_DEFINE([MBRTOWC_NULL_ARG_BUG], [1],
-           [Define if the mbrtowc function has the NULL string argument bug.])
-         REPLACE_MBRTOWC=1
-         ;;
-    esac
-    case "$gl_cv_func_mbrtowc_retval" in
-      *yes) ;;
-      *) AC_DEFINE([MBRTOWC_RETVAL_BUG], [1],
-           [Define if the mbrtowc function returns a wrong return value.])
-         REPLACE_MBRTOWC=1
-         ;;
-    esac
-    case "$gl_cv_func_mbrtowc_nul_retval" in
-      *yes) ;;
-      *) AC_DEFINE([MBRTOWC_NUL_RETVAL_BUG], [1],
-           [Define if the mbrtowc function does not return 0 for a NUL character.])
-         REPLACE_MBRTOWC=1
-         ;;
-    esac
+  else
+    if test $REPLACE_MBSTATE_T = 1; then
+      REPLACE_MBRTOWC=1
+    else
+      gl_MBRTOWC_NULL_ARG
+      gl_MBRTOWC_RETVAL
+      gl_MBRTOWC_NUL_RETVAL
+      case "$gl_cv_func_mbrtowc_null_arg" in
+        *yes) ;;
+        *) AC_DEFINE([MBRTOWC_NULL_ARG_BUG], [1],
+             [Define if the mbrtowc function has the NULL string argument bug.])
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_retval" in
+        *yes) ;;
+        *) AC_DEFINE([MBRTOWC_RETVAL_BUG], [1],
+             [Define if the mbrtowc function returns a wrong return value.])
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+      case "$gl_cv_func_mbrtowc_nul_retval" in
+        *yes) ;;
+        *) AC_DEFINE([MBRTOWC_NUL_RETVAL_BUG], [1],
+             [Define if the mbrtowc function does not return 0 for a NUL character.])
+           REPLACE_MBRTOWC=1
+           ;;
+      esac
+    fi
   fi
   if test $HAVE_MBRTOWC = 0 || test $REPLACE_MBRTOWC = 1; then
     gl_REPLACE_WCHAR_H
diff --git a/gnulib-m4/mbsinit.m4 b/gnulib-m4/mbsinit.m4
index 03b055cd..46c106fc 100644
--- a/gnulib-m4/mbsinit.m4
+++ b/gnulib-m4/mbsinit.m4
@@ -1,5 +1,5 @@
-# mbsinit.m4 serial 3
-dnl Copyright (C) 2008 Free Software Foundation, Inc.
+# mbsinit.m4 serial 4
+dnl Copyright (C) 2008, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -10,12 +10,14 @@ AC_DEFUN([gl_FUNC_MBSINIT],
 
   AC_REQUIRE([AC_TYPE_MBSTATE_T])
   gl_MBSTATE_T_BROKEN
-  if test $REPLACE_MBSTATE_T = 1; then
-    REPLACE_MBSINIT=1
-  fi
+
   AC_CHECK_FUNCS_ONCE([mbsinit])
   if test $ac_cv_func_mbsinit = no; then
     HAVE_MBSINIT=0
+  else
+    if test $REPLACE_MBSTATE_T = 1; then
+      REPLACE_MBSINIT=1
+    fi
   fi
   if test $HAVE_MBSINIT = 0 || test $REPLACE_MBSINIT = 1; then
     gl_REPLACE_WCHAR_H
diff --git a/gnulib-m4/mbstate_t.m4 b/gnulib-m4/mbstate_t.m4
index d4ec6f0f..3e2df29f 100644
--- a/gnulib-m4/mbstate_t.m4
+++ b/gnulib-m4/mbstate_t.m4
@@ -1,5 +1,5 @@
 # mbstate_t.m4 serial 12
-dnl Copyright (C) 2000-2002, 2008, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2000-2002, 2008-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -18,17 +18,17 @@ AC_DEFUN([AC_TYPE_MBSTATE_T],
 
    AC_CACHE_CHECK([for mbstate_t], [ac_cv_type_mbstate_t],
      [AC_COMPILE_IFELSE(
-	[AC_LANG_PROGRAM(
-	   [AC_INCLUDES_DEFAULT[
-#	    include <wchar.h>]],
-	   [[mbstate_t x; return sizeof x;]])],
-	[ac_cv_type_mbstate_t=yes],
-	[ac_cv_type_mbstate_t=no])])
+        [AC_LANG_PROGRAM(
+           [AC_INCLUDES_DEFAULT[
+#           include <wchar.h>]],
+           [[mbstate_t x; return sizeof x;]])],
+        [ac_cv_type_mbstate_t=yes],
+        [ac_cv_type_mbstate_t=no])])
    if test $ac_cv_type_mbstate_t = yes; then
      AC_DEFINE([HAVE_MBSTATE_T], [1],
-	       [Define to 1 if <wchar.h> declares mbstate_t.])
+               [Define to 1 if <wchar.h> declares mbstate_t.])
    else
      AC_DEFINE([mbstate_t], [int],
-	       [Define to a type if <wchar.h> does not define.])
+               [Define to a type if <wchar.h> does not define.])
    fi
 ])
diff --git a/gnulib-m4/memchr.m4 b/gnulib-m4/memchr.m4
index 1194bac2..ab773b81 100644
--- a/gnulib-m4/memchr.m4
+++ b/gnulib-m4/memchr.m4
@@ -1,5 +1,5 @@
-# memchr.m4 serial 7
-dnl Copyright (C) 2002, 2003, 2004, 2009 Free Software Foundation, Inc.
+# memchr.m4 serial 8
+dnl Copyright (C) 2002-2004, 2009-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -13,12 +13,7 @@ AC_DEFUN_ONCE([gl_FUNC_MEMCHR],
 
   dnl These days, we assume memchr is present.  But just in case...
   AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
-  AC_REPLACE_FUNCS([memchr])
-  if test $ac_cv_func_memchr = no; then
-    gl_PREREQ_MEMCHR
-    REPLACE_MEMCHR=1
-  fi
-
+  AC_CHECK_FUNCS_ONCE([memchr])
   if test $ac_cv_func_memchr = yes; then
     # Detect platform-specific bugs in some versions of glibc:
     # memchr should not dereference anything with length 0
@@ -53,11 +48,11 @@ AC_DEFUN_ONCE([gl_FUNC_MEMCHR],
     {
       int pagesize = getpagesize ();
       char *two_pages =
-	(char *) mmap (NULL, 2 * pagesize, PROT_READ | PROT_WRITE,
-		       flags, fd, 0);
+        (char *) mmap (NULL, 2 * pagesize, PROT_READ | PROT_WRITE,
+                       flags, fd, 0);
       if (two_pages != (char *)(-1)
-	  && mprotect (two_pages + pagesize, pagesize, PROT_NONE) == 0)
-	fence = two_pages + pagesize;
+          && mprotect (two_pages + pagesize, pagesize, PROT_NONE) == 0)
+        fence = two_pages + pagesize;
     }
 #endif
   if (fence)
@@ -73,10 +68,14 @@ AC_DEFUN_ONCE([gl_FUNC_MEMCHR],
       [dnl Be pessimistic for now.
        gl_cv_func_memchr_works="guessing no"])])
     if test "$gl_cv_func_memchr_works" != yes; then
-      gl_PREREQ_MEMCHR
       REPLACE_MEMCHR=1
-      AC_LIBOBJ([memchr])
     fi
+  else
+    HAVE_MEMCHR=0
+  fi
+  if test $HAVE_MEMCHR = 0 || test $REPLACE_MEMCHR = 1; then
+    AC_LIBOBJ([memchr])
+    gl_PREREQ_MEMCHR
   fi
 ])
 
diff --git a/gnulib-m4/minmax.m4 b/gnulib-m4/minmax.m4
index d2993fba..d9e9cecf 100644
--- a/gnulib-m4/minmax.m4
+++ b/gnulib-m4/minmax.m4
@@ -1,5 +1,5 @@
 # minmax.m4 serial 3
-dnl Copyright (C) 2005, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/mmap-anon.m4 b/gnulib-m4/mmap-anon.m4
index 14b6270d..a6b7b9ac 100644
--- a/gnulib-m4/mmap-anon.m4
+++ b/gnulib-m4/mmap-anon.m4
@@ -1,5 +1,5 @@
 # mmap-anon.m4 serial 8
-dnl Copyright (C) 2005, 2007, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/mode_t.m4 b/gnulib-m4/mode_t.m4
deleted file mode 100644
index a4dd694d..00000000
--- a/gnulib-m4/mode_t.m4
+++ /dev/null
@@ -1,26 +0,0 @@
-# mode_t.m4 serial 1
-dnl Copyright (C) 2009 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
-# For using mode_t, it's sufficient to use AC_TYPE_MODE_T and
-# include <sys/types.h>.
-
-# Define PROMOTED_MODE_T to the type that is the result of "default argument
-# promotion" (ISO C 6.5.2.2.(6)) of the type mode_t.
-AC_DEFUN([gl_PROMOTED_TYPE_MODE_T],
-[
-  AC_REQUIRE([AC_TYPE_MODE_T])
-  AC_CACHE_CHECK([for promoted mode_t type], [gl_cv_promoted_mode_t], [
-    dnl Assume mode_t promotes to 'int' if and only if it is smaller than 'int',
-    dnl and to itself otherwise. This assumption is not guaranteed by the ISO C
-    dnl standard, but we don't know of any real-world counterexamples.
-    AC_TRY_COMPILE([#include <sys/types.h>],
-      [typedef int array[2 * (sizeof (mode_t) < sizeof (int)) - 1];],
-      [gl_cv_promoted_mode_t='int'],
-      [gl_cv_promoted_mode_t='mode_t'])
-  ])
-  AC_DEFINE_UNQUOTED([PROMOTED_MODE_T], [$gl_cv_promoted_mode_t],
-    [Define to the type that is the result of default argument promotions of type mode_t.])
-])
diff --git a/gnulib-m4/multiarch.m4 b/gnulib-m4/multiarch.m4
index ec377bac..389bd2bb 100644
--- a/gnulib-m4/multiarch.m4
+++ b/gnulib-m4/multiarch.m4
@@ -1,5 +1,5 @@
 # multiarch.m4 serial 5
-dnl Copyright (C) 2008, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/nocrash.m4 b/gnulib-m4/nocrash.m4
index 8626ea0b..efbcfa6a 100644
--- a/gnulib-m4/nocrash.m4
+++ b/gnulib-m4/nocrash.m4
@@ -1,5 +1,5 @@
 # nocrash.m4 serial 2
-dnl Copyright (C) 2005, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/open.m4 b/gnulib-m4/open.m4
deleted file mode 100644
index c0eb8e86..00000000
--- a/gnulib-m4/open.m4
+++ /dev/null
@@ -1,65 +0,0 @@
-# open.m4 serial 7
-dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
-AC_DEFUN([gl_FUNC_OPEN],
-[
-  AC_REQUIRE([AC_CANONICAL_HOST])
-  case "$host_os" in
-    mingw* | pw*)
-      gl_REPLACE_OPEN
-      ;;
-    *)
-      dnl open("foo/") should not create a file when the file name has a
-      dnl trailing slash.
-      AC_CACHE_CHECK([whether open recognizes a trailing slash],
-        [gl_cv_func_open_slash],
-        [
-          AC_TRY_RUN([
-#include <fcntl.h>
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-int main ()
-{
-  return open ("conftest.sl/", O_CREAT, 0600) >= 0;
-}], [gl_cv_func_open_slash=yes], [gl_cv_func_open_slash=no],
-            [
-changequote(,)dnl
-             case "$host_os" in
-               solaris2.[0-9]*) gl_cv_func_open_slash="guessing no" ;;
-               hpux*)           gl_cv_func_open_slash="guessing no" ;;
-               *)               gl_cv_func_open_slash="guessing yes" ;;
-             esac
-changequote([,])dnl
-            ])
-          rm -f conftest.sl
-        ])
-      case "$gl_cv_func_open_slash" in
-        *no)
-          AC_DEFINE([OPEN_TRAILING_SLASH_BUG], [1],
-            [Define to 1 if open() fails to recognize a trailing slash.])
-          gl_REPLACE_OPEN
-          ;;
-      esac
-      ;;
-  esac
-])
-
-AC_DEFUN([gl_REPLACE_OPEN],
-[
-  AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
-  REPLACE_OPEN=1
-  AC_LIBOBJ([open])
-  gl_PREREQ_OPEN
-])
-
-# Prerequisites of lib/open.c.
-AC_DEFUN([gl_PREREQ_OPEN],
-[
-  AC_REQUIRE([AC_C_INLINE])
-  AC_REQUIRE([gl_PROMOTED_TYPE_MODE_T])
-  :
-])
diff --git a/gnulib-m4/printf-frexp.m4 b/gnulib-m4/printf-frexp.m4
index fa0aa158..c42391a4 100644
--- a/gnulib-m4/printf-frexp.m4
+++ b/gnulib-m4/printf-frexp.m4
@@ -1,5 +1,5 @@
 # printf-frexp.m4 serial 3
-dnl Copyright (C) 2007, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/printf-frexpl.m4 b/gnulib-m4/printf-frexpl.m4
index f2eb2004..14ffe1fc 100644
--- a/gnulib-m4/printf-frexpl.m4
+++ b/gnulib-m4/printf-frexpl.m4
@@ -1,5 +1,5 @@
 # printf-frexpl.m4 serial 6
-dnl Copyright (C) 2007, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/printf.m4 b/gnulib-m4/printf.m4
index 87aa45c5..ebca5364 100644
--- a/gnulib-m4/printf.m4
+++ b/gnulib-m4/printf.m4
@@ -1,5 +1,5 @@
 # printf.m4 serial 33
-dnl Copyright (C) 2003, 2007-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/putenv.m4 b/gnulib-m4/putenv.m4
new file mode 100644
index 00000000..dd9140c0
--- /dev/null
+++ b/gnulib-m4/putenv.m4
@@ -0,0 +1,41 @@
+# putenv.m4 serial 16
+dnl Copyright (C) 2002-2010 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Jim Meyering.
+dnl
+dnl Check whether putenv ("FOO") removes FOO from the environment.
+dnl The putenv in libc on at least SunOS 4.1.4 does *not* do that.
+
+AC_DEFUN([gl_FUNC_PUTENV],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_CACHE_CHECK([for putenv compatible with GNU and SVID],
+   [gl_cv_func_svid_putenv],
+   [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],[[
+    /* Put it in env.  */
+    if (putenv ("CONFTEST_putenv=val"))
+      return 1;
+
+    /* Try to remove it.  */
+    if (putenv ("CONFTEST_putenv"))
+      return 1;
+
+    /* Make sure it was deleted.  */
+    if (getenv ("CONFTEST_putenv") != 0)
+      return 1;
+
+    return 0;
+              ]])],
+             gl_cv_func_svid_putenv=yes,
+             gl_cv_func_svid_putenv=no,
+             dnl When crosscompiling, assume putenv is broken.
+             gl_cv_func_svid_putenv=no)
+   ])
+  if test $gl_cv_func_svid_putenv = no; then
+    REPLACE_PUTENV=1
+    AC_LIBOBJ([putenv])
+  fi
+])
diff --git a/gnulib-m4/relocatable-lib.m4 b/gnulib-m4/relocatable-lib.m4
index fd99cdae..c1923786 100644
--- a/gnulib-m4/relocatable-lib.m4
+++ b/gnulib-m4/relocatable-lib.m4
@@ -1,5 +1,5 @@
-# relocatable-lib.m4 serial 4
-dnl Copyright (C) 2003, 2005-2007, 2009 Free Software Foundation, Inc.
+# relocatable-lib.m4 serial 5
+dnl Copyright (C) 2003, 2005-2007, 2009-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -27,7 +27,8 @@ AC_DEFUN([gl_RELOCATABLE_LIBRARY_BODY],
     [Define to the value of ${prefix}, as a string.])
   if test $RELOCATABLE = yes; then
     AC_DEFINE([ENABLE_RELOCATABLE], [1],
-      [Define to 1 if the package shall run at any location in the filesystem.])
+      [Define to 1 if the package shall run at any location in the file
+       system.])
   fi
 ])
 
@@ -43,7 +44,8 @@ AC_DEFUN([gl_RELOCATABLE_NOP],
 [
   AC_MSG_CHECKING([whether to activate relocatable installation])
   AC_ARG_ENABLE([relocatable],
-    [  --enable-relocatable    install a package that can be moved in the filesystem],
+    [AS_HELP_STRING([--enable-relocatable],
+      [install a package that can be moved in the file system])],
     [if test "$enableval" != no; then
        RELOCATABLE=yes
      else
diff --git a/gnulib-m4/setenv.m4 b/gnulib-m4/setenv.m4
index e28407ee..58f6d138 100644
--- a/gnulib-m4/setenv.m4
+++ b/gnulib-m4/setenv.m4
@@ -1,17 +1,14 @@
-# setenv.m4 serial 11
-dnl Copyright (C) 2001-2004, 2006-2009 Free Software Foundation, Inc.
+# setenv.m4 serial 16
+dnl Copyright (C) 2001-2004, 2006-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
 AC_DEFUN([gl_FUNC_SETENV],
 [
-  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
-  AC_CHECK_FUNCS_ONCE([setenv])
-  if test $ac_cv_func_setenv = no; then
-    HAVE_SETENV=0
+  AC_REQUIRE([gl_FUNC_SETENV_SEPARATE])
+  if test $HAVE_SETENV$REPLACE_SETENV != 10; then
     AC_LIBOBJ([setenv])
-    gl_PREREQ_SETENV
   fi
 ])
 
@@ -22,6 +19,25 @@ AC_DEFUN([gl_FUNC_SETENV_SEPARATE],
   AC_CHECK_FUNCS_ONCE([setenv])
   if test $ac_cv_func_setenv = no; then
     HAVE_SETENV=0
+  else
+    AC_CACHE_CHECK([whether setenv validates arguments],
+      [gl_cv_func_setenv_works],
+      [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+       #include <stdlib.h>
+       #include <errno.h>
+       #include <string.h>
+      ]], [[
+       if (setenv ("", "", 0) != -1) return 1;
+       if (errno != EINVAL) return 2;
+       if (setenv ("a", "=", 1) != 0) return 3;
+       if (strcmp (getenv ("a"), "=") != 0) return 4;
+      ]])],
+      [gl_cv_func_setenv_works=yes], [gl_cv_func_setenv_works=no],
+      [gl_cv_func_setenv_works="guessing no"])])
+    if test "$gl_cv_func_setenv_works" != yes; then
+      REPLACE_SETENV=1
+      AC_LIBOBJ([setenv])
+    fi
   fi
   gl_PREREQ_SETENV
 ])
@@ -35,6 +51,7 @@ AC_DEFUN([gl_FUNC_UNSETENV],
     AC_LIBOBJ([unsetenv])
     gl_PREREQ_UNSETENV
   else
+    dnl Some BSDs return void, failing to do error checking.
     AC_CACHE_CHECK([for unsetenv() return type], [gt_cv_func_unsetenv_ret],
       [AC_TRY_COMPILE([#include <stdlib.h>
 extern
@@ -48,7 +65,30 @@ int unsetenv();
 #endif
 ], , gt_cv_func_unsetenv_ret='int', gt_cv_func_unsetenv_ret='void')])
     if test $gt_cv_func_unsetenv_ret = 'void'; then
-      VOID_UNSETENV=1
+      AC_DEFINE([VOID_UNSETENV], [1], [Define to 1 if unsetenv returns void
+       instead of int.])
+      REPLACE_UNSETENV=1
+      AC_LIBOBJ([unsetenv])
+    fi
+
+    dnl Solaris 10 unsetenv does not remove all copies of a name.
+    AC_CACHE_CHECK([whether unsetenv works on duplicates],
+      [gl_cv_func_unsetenv_works],
+      [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+       #include <stdlib.h>
+      ]], [[
+       char entry[] = "b=2";
+       if (putenv ((char *) "a=1")) return 1;
+       if (putenv (entry)) return 2;
+       entry[0] = 'a';
+       unsetenv ("a");
+       if (getenv ("a")) return 3;
+      ]])],
+      [gl_cv_func_unsetenv_works=yes], [gl_cv_func_unsetenv_works=no],
+      [gl_cv_func_unsetenv_works="guessing no"])])
+    if test "$gl_cv_func_unsetenv_works" != yes; then
+      REPLACE_UNSETENV=1
+      AC_LIBOBJ([unsetenv])
     fi
   fi
 ])
diff --git a/gnulib-m4/signbit.m4 b/gnulib-m4/signbit.m4
index 233bf2a3..56ff825f 100644
--- a/gnulib-m4/signbit.m4
+++ b/gnulib-m4/signbit.m4
@@ -1,5 +1,5 @@
 # signbit.m4 serial 6
-dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/size_max.m4 b/gnulib-m4/size_max.m4
index 35bd3d6a..ce992db1 100644
--- a/gnulib-m4/size_max.m4
+++ b/gnulib-m4/size_max.m4
@@ -1,5 +1,5 @@
 # size_max.m4 serial 9
-dnl Copyright (C) 2003, 2005-2006, 2008-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2006, 2008-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/stdbool.m4 b/gnulib-m4/stdbool.m4
index 57c804a8..3d672d74 100644
--- a/gnulib-m4/stdbool.m4
+++ b/gnulib-m4/stdbool.m4
@@ -1,6 +1,6 @@
 # Check for stdbool.h that conforms to C99.
 
-dnl Copyright (C) 2002-2006, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -38,77 +38,77 @@ AC_DEFUN([AC_HEADER_STDBOOL],
   [AC_CACHE_CHECK([for stdbool.h that conforms to C99],
      [ac_cv_header_stdbool_h],
      [AC_TRY_COMPILE(
-	[
-	  #include <stdbool.h>
-	  #ifndef bool
-	   "error: bool is not defined"
-	  #endif
-	  #ifndef false
-	   "error: false is not defined"
-	  #endif
-	  #if false
-	   "error: false is not 0"
-	  #endif
-	  #ifndef true
-	   "error: true is not defined"
-	  #endif
-	  #if true != 1
-	   "error: true is not 1"
-	  #endif
-	  #ifndef __bool_true_false_are_defined
-	   "error: __bool_true_false_are_defined is not defined"
-	  #endif
+        [
+          #include <stdbool.h>
+          #ifndef bool
+           "error: bool is not defined"
+          #endif
+          #ifndef false
+           "error: false is not defined"
+          #endif
+          #if false
+           "error: false is not 0"
+          #endif
+          #ifndef true
+           "error: true is not defined"
+          #endif
+          #if true != 1
+           "error: true is not 1"
+          #endif
+          #ifndef __bool_true_false_are_defined
+           "error: __bool_true_false_are_defined is not defined"
+          #endif
 
-	  struct s { _Bool s: 1; _Bool t; } s;
+          struct s { _Bool s: 1; _Bool t; } s;
 
-	  char a[true == 1 ? 1 : -1];
-	  char b[false == 0 ? 1 : -1];
-	  char c[__bool_true_false_are_defined == 1 ? 1 : -1];
-	  char d[(bool) 0.5 == true ? 1 : -1];
-	  bool e = &s;
-	  char f[(_Bool) 0.0 == false ? 1 : -1];
-	  char g[true];
-	  char h[sizeof (_Bool)];
-	  char i[sizeof s.t];
-	  enum { j = false, k = true, l = false * true, m = true * 256 };
-	  _Bool n[m];
-	  char o[sizeof n == m * sizeof n[0] ? 1 : -1];
-	  char p[-1 - (_Bool) 0 < 0 && -1 - (bool) 0 < 0 ? 1 : -1];
-	  #if defined __xlc__ || defined __GNUC__
-	   /* Catch a bug in IBM AIX xlc compiler version 6.0.0.0
-	      reported by James Lemley on 2005-10-05; see
-	      http://lists.gnu.org/archive/html/bug-coreutils/2005-10/msg00086.html
-	      This test is not quite right, since xlc is allowed to
-	      reject this program, as the initializer for xlcbug is
-	      not one of the forms that C requires support for.
-	      However, doing the test right would require a run-time
-	      test, and that would make cross-compilation harder.
-	      Let us hope that IBM fixes the xlc bug, and also adds
-	      support for this kind of constant expression.  In the
-	      meantime, this test will reject xlc, which is OK, since
-	      our stdbool.h substitute should suffice.  We also test
-	      this with GCC, where it should work, to detect more
-	      quickly whether someone messes up the test in the
-	      future.  */
-	   char digs[] = "0123456789";
-	   int xlcbug = 1 / (&(digs + 5)[-2 + (bool) 1] == &digs[4] ? 1 : -1);
-	  #endif
-	  /* Catch a bug in an HP-UX C compiler.  See
-	     http://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html
-	     http://lists.gnu.org/archive/html/bug-coreutils/2005-11/msg00161.html
-	   */
-	  _Bool q = true;
-	  _Bool *pq = &q;
-	],
-	[
-	  *pq |= q;
-	  *pq |= ! q;
-	  /* Refer to every declared value, to avoid compiler optimizations.  */
-	  return (!a + !b + !c + !d + !e + !f + !g + !h + !i + !!j + !k + !!l
-		  + !m + !n + !o + !p + !q + !pq);
-	],
-	[ac_cv_header_stdbool_h=yes],
-	[ac_cv_header_stdbool_h=no])])
+          char a[true == 1 ? 1 : -1];
+          char b[false == 0 ? 1 : -1];
+          char c[__bool_true_false_are_defined == 1 ? 1 : -1];
+          char d[(bool) 0.5 == true ? 1 : -1];
+          bool e = &s;
+          char f[(_Bool) 0.0 == false ? 1 : -1];
+          char g[true];
+          char h[sizeof (_Bool)];
+          char i[sizeof s.t];
+          enum { j = false, k = true, l = false * true, m = true * 256 };
+          _Bool n[m];
+          char o[sizeof n == m * sizeof n[0] ? 1 : -1];
+          char p[-1 - (_Bool) 0 < 0 && -1 - (bool) 0 < 0 ? 1 : -1];
+          #if defined __xlc__ || defined __GNUC__
+           /* Catch a bug in IBM AIX xlc compiler version 6.0.0.0
+              reported by James Lemley on 2005-10-05; see
+              http://lists.gnu.org/archive/html/bug-coreutils/2005-10/msg00086.html
+              This test is not quite right, since xlc is allowed to
+              reject this program, as the initializer for xlcbug is
+              not one of the forms that C requires support for.
+              However, doing the test right would require a run-time
+              test, and that would make cross-compilation harder.
+              Let us hope that IBM fixes the xlc bug, and also adds
+              support for this kind of constant expression.  In the
+              meantime, this test will reject xlc, which is OK, since
+              our stdbool.h substitute should suffice.  We also test
+              this with GCC, where it should work, to detect more
+              quickly whether someone messes up the test in the
+              future.  */
+           char digs[] = "0123456789";
+           int xlcbug = 1 / (&(digs + 5)[-2 + (bool) 1] == &digs[4] ? 1 : -1);
+          #endif
+          /* Catch a bug in an HP-UX C compiler.  See
+             http://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html
+             http://lists.gnu.org/archive/html/bug-coreutils/2005-11/msg00161.html
+           */
+          _Bool q = true;
+          _Bool *pq = &q;
+        ],
+        [
+          *pq |= q;
+          *pq |= ! q;
+          /* Refer to every declared value, to avoid compiler optimizations.  */
+          return (!a + !b + !c + !d + !e + !f + !g + !h + !i + !!j + !k + !!l
+                  + !m + !n + !o + !p + !q + !pq);
+        ],
+        [ac_cv_header_stdbool_h=yes],
+        [ac_cv_header_stdbool_h=no])])
    AC_CHECK_TYPES([_Bool])
    if test $ac_cv_header_stdbool_h = yes; then
      AC_DEFINE([HAVE_STDBOOL_H], [1], [Define to 1 if stdbool.h conforms to C99.])
diff --git a/gnulib-m4/stddef_h.m4 b/gnulib-m4/stddef_h.m4
index 682e9c62..c3ae5694 100644
--- a/gnulib-m4/stddef_h.m4
+++ b/gnulib-m4/stddef_h.m4
@@ -1,6 +1,6 @@
 dnl A placeholder for POSIX 2008 <stddef.h>, for platforms that have issues.
-# stddef_h.m4 serial 1
-dnl Copyright (C) 2009 Free Software Foundation, Inc.
+# stddef_h.m4 serial 2
+dnl Copyright (C) 2009, 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -33,7 +33,7 @@ AC_DEFUN([gl_STDDEF_MODULE_INDICATOR],
 [
   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
   AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 ])
 
 AC_DEFUN([gl_STDDEF_H_DEFAULTS],
diff --git a/gnulib-m4/stdint.m4 b/gnulib-m4/stdint.m4
index a2e8bdd6..1cc57e6e 100644
--- a/gnulib-m4/stdint.m4
+++ b/gnulib-m4/stdint.m4
@@ -1,5 +1,5 @@
 # stdint.m4 serial 34
-dnl Copyright (C) 2001-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -396,12 +396,12 @@ AC_DEFUN([gl_INTEGER_TYPE_SUFFIX],
        for glsuf in "$glsufu" ${glsufu}l ${glsufu}ll ${glsufu}i64; do
          case $glsuf in
            '')  gltype1='int';;
-           l)	gltype1='long int';;
-           ll)	gltype1='long long int';;
-           i64)	gltype1='__int64';;
-           u)	gltype1='unsigned int';;
-           ul)	gltype1='unsigned long int';;
-           ull)	gltype1='unsigned long long int';;
+           l)   gltype1='long int';;
+           ll)  gltype1='long long int';;
+           i64) gltype1='__int64';;
+           u)   gltype1='unsigned int';;
+           ul)  gltype1='unsigned long int';;
+           ull) gltype1='unsigned long long int';;
            ui64)gltype1='unsigned __int64';;
          esac
          AC_COMPILE_IFELSE(
diff --git a/gnulib-m4/stdint_h.m4 b/gnulib-m4/stdint_h.m4
index 82f0c244..b8e3c6cc 100644
--- a/gnulib-m4/stdint_h.m4
+++ b/gnulib-m4/stdint_h.m4
@@ -1,5 +1,5 @@
 # stdint_h.m4 serial 8
-dnl Copyright (C) 1997-2004, 2006, 2008, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 1997-2004, 2006, 2008-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/stdlib_h.m4 b/gnulib-m4/stdlib_h.m4
index b295f16b..dd84796d 100644
--- a/gnulib-m4/stdlib_h.m4
+++ b/gnulib-m4/stdlib_h.m4
@@ -1,5 +1,5 @@
-# stdlib_h.m4 serial 15
-dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
+# stdlib_h.m4 serial 28
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -22,41 +22,75 @@ AC_DEFUN([gl_STDLIB_H],
       # include <random.h>
       #endif
     ]])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use, and which is not
+  dnl guaranteed by C89.
+  gl_WARN_ON_USE_PREPARE([[#include <stdlib.h>
+#if HAVE_SYS_LOADAVG_H
+# include <sys/loadavg.h>
+#endif
+#if HAVE_RANDOM_H
+# include <random.h>
+#endif
+    ]], [atoll canonicalize_file_name getloadavg getsubopt grantpt mkdtemp
+    mkostemp mkostemps mkstemp mkstemps ptsname random_r initstat_r srandom_r
+    setstate_r realpath rpmatch setenv strtod strtoll strtoull unlockpt
+    unsetenv])
 ])
 
 AC_DEFUN([gl_STDLIB_MODULE_INDICATOR],
 [
   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
   AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
 AC_DEFUN([gl_STDLIB_H_DEFAULTS],
 [
-  GNULIB_MALLOC_POSIX=0;  AC_SUBST([GNULIB_MALLOC_POSIX])
-  GNULIB_REALLOC_POSIX=0; AC_SUBST([GNULIB_REALLOC_POSIX])
-  GNULIB_CALLOC_POSIX=0;  AC_SUBST([GNULIB_CALLOC_POSIX])
   GNULIB_ATOLL=0;         AC_SUBST([GNULIB_ATOLL])
+  GNULIB_CALLOC_POSIX=0;  AC_SUBST([GNULIB_CALLOC_POSIX])
+  GNULIB_CANONICALIZE_FILE_NAME=0;  AC_SUBST([GNULIB_CANONICALIZE_FILE_NAME])
   GNULIB_GETLOADAVG=0;    AC_SUBST([GNULIB_GETLOADAVG])
   GNULIB_GETSUBOPT=0;     AC_SUBST([GNULIB_GETSUBOPT])
+  GNULIB_GRANTPT=0;       AC_SUBST([GNULIB_GRANTPT])
+  GNULIB_MALLOC_POSIX=0;  AC_SUBST([GNULIB_MALLOC_POSIX])
   GNULIB_MKDTEMP=0;       AC_SUBST([GNULIB_MKDTEMP])
+  GNULIB_MKOSTEMP=0;      AC_SUBST([GNULIB_MKOSTEMP])
+  GNULIB_MKOSTEMPS=0;     AC_SUBST([GNULIB_MKOSTEMPS])
   GNULIB_MKSTEMP=0;       AC_SUBST([GNULIB_MKSTEMP])
+  GNULIB_MKSTEMPS=0;      AC_SUBST([GNULIB_MKSTEMPS])
+  GNULIB_PTSNAME=0;       AC_SUBST([GNULIB_PTSNAME])
   GNULIB_PUTENV=0;        AC_SUBST([GNULIB_PUTENV])
   GNULIB_RANDOM_R=0;      AC_SUBST([GNULIB_RANDOM_R])
+  GNULIB_REALLOC_POSIX=0; AC_SUBST([GNULIB_REALLOC_POSIX])
+  GNULIB_REALPATH=0;      AC_SUBST([GNULIB_REALPATH])
   GNULIB_RPMATCH=0;       AC_SUBST([GNULIB_RPMATCH])
   GNULIB_SETENV=0;        AC_SUBST([GNULIB_SETENV])
   GNULIB_STRTOD=0;        AC_SUBST([GNULIB_STRTOD])
   GNULIB_STRTOLL=0;       AC_SUBST([GNULIB_STRTOLL])
   GNULIB_STRTOULL=0;      AC_SUBST([GNULIB_STRTOULL])
+  GNULIB_UNLOCKPT=0;      AC_SUBST([GNULIB_UNLOCKPT])
   GNULIB_UNSETENV=0;      AC_SUBST([GNULIB_UNSETENV])
   dnl Assume proper GNU behavior unless another module says otherwise.
   HAVE_ATOLL=1;              AC_SUBST([HAVE_ATOLL])
   HAVE_CALLOC_POSIX=1;       AC_SUBST([HAVE_CALLOC_POSIX])
+  HAVE_CANONICALIZE_FILE_NAME=1;  AC_SUBST([HAVE_CANONICALIZE_FILE_NAME])
+  HAVE_DECL_GETLOADAVG=1;    AC_SUBST([HAVE_DECL_GETLOADAVG])
   HAVE_GETSUBOPT=1;          AC_SUBST([HAVE_GETSUBOPT])
+  HAVE_GRANTPT=1;            AC_SUBST([HAVE_GRANTPT])
   HAVE_MALLOC_POSIX=1;       AC_SUBST([HAVE_MALLOC_POSIX])
   HAVE_MKDTEMP=1;            AC_SUBST([HAVE_MKDTEMP])
-  HAVE_REALLOC_POSIX=1;      AC_SUBST([HAVE_REALLOC_POSIX])
+  HAVE_MKOSTEMP=1;           AC_SUBST([HAVE_MKOSTEMP])
+  HAVE_MKOSTEMPS=1;          AC_SUBST([HAVE_MKOSTEMPS])
+  HAVE_MKSTEMP=1;            AC_SUBST([HAVE_MKSTEMP])
+  HAVE_MKSTEMPS=1;           AC_SUBST([HAVE_MKSTEMPS])
+  HAVE_PTSNAME=1;            AC_SUBST([HAVE_PTSNAME])
   HAVE_RANDOM_R=1;           AC_SUBST([HAVE_RANDOM_R])
+  HAVE_REALLOC_POSIX=1;      AC_SUBST([HAVE_REALLOC_POSIX])
+  HAVE_REALPATH=1;           AC_SUBST([HAVE_REALPATH])
   HAVE_RPMATCH=1;            AC_SUBST([HAVE_RPMATCH])
   HAVE_SETENV=1;             AC_SUBST([HAVE_SETENV])
   HAVE_STRTOD=1;             AC_SUBST([HAVE_STRTOD])
@@ -64,10 +98,13 @@ AC_DEFUN([gl_STDLIB_H_DEFAULTS],
   HAVE_STRTOULL=1;           AC_SUBST([HAVE_STRTOULL])
   HAVE_STRUCT_RANDOM_DATA=1; AC_SUBST([HAVE_STRUCT_RANDOM_DATA])
   HAVE_SYS_LOADAVG_H=0;      AC_SUBST([HAVE_SYS_LOADAVG_H])
+  HAVE_UNLOCKPT=1;           AC_SUBST([HAVE_UNLOCKPT])
   HAVE_UNSETENV=1;           AC_SUBST([HAVE_UNSETENV])
-  HAVE_DECL_GETLOADAVG=1;    AC_SUBST([HAVE_DECL_GETLOADAVG])
+  REPLACE_CANONICALIZE_FILE_NAME=0;  AC_SUBST([REPLACE_CANONICALIZE_FILE_NAME])
   REPLACE_MKSTEMP=0;         AC_SUBST([REPLACE_MKSTEMP])
   REPLACE_PUTENV=0;          AC_SUBST([REPLACE_PUTENV])
+  REPLACE_REALPATH=0;        AC_SUBST([REPLACE_REALPATH])
+  REPLACE_SETENV=0;          AC_SUBST([REPLACE_SETENV])
   REPLACE_STRTOD=0;          AC_SUBST([REPLACE_STRTOD])
-  VOID_UNSETENV=0;           AC_SUBST([VOID_UNSETENV])
+  REPLACE_UNSETENV=0;        AC_SUBST([REPLACE_UNSETENV])
 ])
diff --git a/gnulib-m4/strerror.m4 b/gnulib-m4/strerror.m4
index 8c16ca9a..1649b245 100644
--- a/gnulib-m4/strerror.m4
+++ b/gnulib-m4/strerror.m4
@@ -1,5 +1,5 @@
 # strerror.m4 serial 9
-dnl Copyright (C) 2002, 2007-2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/string_h.m4 b/gnulib-m4/string_h.m4
index 11f09c8b..1977aecf 100644
--- a/gnulib-m4/string_h.m4
+++ b/gnulib-m4/string_h.m4
@@ -1,11 +1,11 @@
 # Configure a GNU-like replacement for <string.h>.
 
-# Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
+# Copyright (C) 2007-2010 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
 
-# serial 7
+# serial 17
 
 # Written by Paul Eggert.
 
@@ -21,13 +21,24 @@ AC_DEFUN([gl_HEADER_STRING_H_BODY],
   AC_REQUIRE([AC_C_RESTRICT])
   AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
   gl_CHECK_NEXT_HEADERS([string.h])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use, and which is not
+  dnl guaranteed by C89.
+  gl_WARN_ON_USE_PREPARE([[#include <string.h>
+    ]],
+    [memmem mempcpy memrchr rawmemchr stpcpy stpncpy strchrnul strdup
+     strncat strndup strnlen strpbrk strsep strcasestr strtok_r strsignal
+     strverscmp])
 ])
 
 AC_DEFUN([gl_STRING_MODULE_INDICATOR],
 [
   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
   AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
 AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
@@ -41,6 +52,7 @@ AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
   GNULIB_STPNCPY=0;     AC_SUBST([GNULIB_STPNCPY])
   GNULIB_STRCHRNUL=0;   AC_SUBST([GNULIB_STRCHRNUL])
   GNULIB_STRDUP=0;      AC_SUBST([GNULIB_STRDUP])
+  GNULIB_STRNCAT=0;     AC_SUBST([GNULIB_STRNCAT])
   GNULIB_STRNDUP=0;     AC_SUBST([GNULIB_STRNDUP])
   GNULIB_STRNLEN=0;     AC_SUBST([GNULIB_STRNLEN])
   GNULIB_STRPBRK=0;     AC_SUBST([GNULIB_STRPBRK])
@@ -64,31 +76,37 @@ AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
   GNULIB_MBSTOK_R=0;    AC_SUBST([GNULIB_MBSTOK_R])
   GNULIB_STRERROR=0;    AC_SUBST([GNULIB_STRERROR])
   GNULIB_STRSIGNAL=0;   AC_SUBST([GNULIB_STRSIGNAL])
-  GNULIB_STRVERSCMP=0;   AC_SUBST([GNULIB_STRVERSCMP])
+  GNULIB_STRVERSCMP=0;  AC_SUBST([GNULIB_STRVERSCMP])
+  HAVE_MBSLEN=0;        AC_SUBST([HAVE_MBSLEN])
   dnl Assume proper GNU behavior unless another module says otherwise.
-  HAVE_DECL_MEMMEM=1;		AC_SUBST([HAVE_DECL_MEMMEM])
-  HAVE_MEMPCPY=1;		AC_SUBST([HAVE_MEMPCPY])
-  HAVE_DECL_MEMRCHR=1;		AC_SUBST([HAVE_DECL_MEMRCHR])
-  HAVE_RAWMEMCHR=1;		AC_SUBST([HAVE_RAWMEMCHR])
-  HAVE_STPCPY=1;		AC_SUBST([HAVE_STPCPY])
-  HAVE_STPNCPY=1;		AC_SUBST([HAVE_STPNCPY])
-  HAVE_STRCHRNUL=1;		AC_SUBST([HAVE_STRCHRNUL])
-  HAVE_DECL_STRDUP=1;		AC_SUBST([HAVE_DECL_STRDUP])
-  HAVE_STRNDUP=1;		AC_SUBST([HAVE_STRNDUP])
-  HAVE_DECL_STRNDUP=1;		AC_SUBST([HAVE_DECL_STRNDUP])
-  HAVE_DECL_STRNLEN=1;		AC_SUBST([HAVE_DECL_STRNLEN])
-  HAVE_STRPBRK=1;		AC_SUBST([HAVE_STRPBRK])
-  HAVE_STRSEP=1;		AC_SUBST([HAVE_STRSEP])
-  HAVE_STRCASESTR=1;		AC_SUBST([HAVE_STRCASESTR])
-  HAVE_DECL_STRTOK_R=1;		AC_SUBST([HAVE_DECL_STRTOK_R])
-  HAVE_DECL_STRERROR=1;		AC_SUBST([HAVE_DECL_STRERROR])
-  HAVE_DECL_STRSIGNAL=1;	AC_SUBST([HAVE_DECL_STRSIGNAL])
-  HAVE_STRVERSCMP=1;		AC_SUBST([HAVE_STRVERSCMP])
-  REPLACE_MEMCHR=0;		AC_SUBST([REPLACE_MEMCHR])
-  REPLACE_MEMMEM=0;		AC_SUBST([REPLACE_MEMMEM])
-  REPLACE_STRDUP=0;		AC_SUBST([REPLACE_STRDUP])
-  REPLACE_STRSTR=0;		AC_SUBST([REPLACE_STRSTR])
-  REPLACE_STRCASESTR=0;		AC_SUBST([REPLACE_STRCASESTR])
-  REPLACE_STRERROR=0;		AC_SUBST([REPLACE_STRERROR])
-  REPLACE_STRSIGNAL=0;		AC_SUBST([REPLACE_STRSIGNAL])
+  HAVE_MEMCHR=1;                AC_SUBST([HAVE_MEMCHR])
+  HAVE_DECL_MEMMEM=1;           AC_SUBST([HAVE_DECL_MEMMEM])
+  HAVE_MEMPCPY=1;               AC_SUBST([HAVE_MEMPCPY])
+  HAVE_DECL_MEMRCHR=1;          AC_SUBST([HAVE_DECL_MEMRCHR])
+  HAVE_RAWMEMCHR=1;             AC_SUBST([HAVE_RAWMEMCHR])
+  HAVE_STPCPY=1;                AC_SUBST([HAVE_STPCPY])
+  HAVE_STPNCPY=1;               AC_SUBST([HAVE_STPNCPY])
+  HAVE_STRCHRNUL=1;             AC_SUBST([HAVE_STRCHRNUL])
+  HAVE_DECL_STRDUP=1;           AC_SUBST([HAVE_DECL_STRDUP])
+  HAVE_DECL_STRNDUP=1;          AC_SUBST([HAVE_DECL_STRNDUP])
+  HAVE_DECL_STRNLEN=1;          AC_SUBST([HAVE_DECL_STRNLEN])
+  HAVE_STRPBRK=1;               AC_SUBST([HAVE_STRPBRK])
+  HAVE_STRSEP=1;                AC_SUBST([HAVE_STRSEP])
+  HAVE_STRCASESTR=1;            AC_SUBST([HAVE_STRCASESTR])
+  HAVE_DECL_STRTOK_R=1;         AC_SUBST([HAVE_DECL_STRTOK_R])
+  HAVE_DECL_STRSIGNAL=1;        AC_SUBST([HAVE_DECL_STRSIGNAL])
+  HAVE_STRVERSCMP=1;            AC_SUBST([HAVE_STRVERSCMP])
+  REPLACE_MEMCHR=0;             AC_SUBST([REPLACE_MEMCHR])
+  REPLACE_MEMMEM=0;             AC_SUBST([REPLACE_MEMMEM])
+  REPLACE_STPNCPY=0;            AC_SUBST([REPLACE_STPNCPY])
+  REPLACE_STRDUP=0;             AC_SUBST([REPLACE_STRDUP])
+  REPLACE_STRSTR=0;             AC_SUBST([REPLACE_STRSTR])
+  REPLACE_STRCASESTR=0;         AC_SUBST([REPLACE_STRCASESTR])
+  REPLACE_STRERROR=0;           AC_SUBST([REPLACE_STRERROR])
+  REPLACE_STRNCAT=0;            AC_SUBST([REPLACE_STRNCAT])
+  REPLACE_STRNDUP=0;            AC_SUBST([REPLACE_STRNDUP])
+  REPLACE_STRNLEN=0;            AC_SUBST([REPLACE_STRNLEN])
+  REPLACE_STRSIGNAL=0;          AC_SUBST([REPLACE_STRSIGNAL])
+  REPLACE_STRTOK_R=0;           AC_SUBST([REPLACE_STRTOK_R])
+  UNDEFINE_STRTOK_R=0;          AC_SUBST([UNDEFINE_STRTOK_R])
 ])
diff --git a/gnulib-m4/strncat.m4 b/gnulib-m4/strncat.m4
new file mode 100644
index 00000000..e4ff70e3
--- /dev/null
+++ b/gnulib-m4/strncat.m4
@@ -0,0 +1,106 @@
+# strncat.m4 serial 1
+dnl Copyright (C) 2002-2004, 2009-2010 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_FUNC_STRNCAT],
+[
+  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  dnl Check for prerequisites for memory fence checks.
+  gl_FUNC_MMAP_ANON
+  AC_CHECK_HEADERS_ONCE([sys/mman.h])
+  AC_CHECK_FUNCS_ONCE([mprotect])
+
+  dnl Detect bug in Solaris 8..10 on SPARC:
+  dnl strncat should not dereference more than n bytes, but always dereferences
+  dnl n+1 bytes if the first n bytes don't contain a NUL byte.
+  dnl Assume that strncat works on platforms that lack mprotect.
+  AC_CACHE_CHECK([whether strncat works], [gl_cv_func_strncat_works],
+    [AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+#include <string.h>
+#if HAVE_SYS_MMAN_H
+# include <fcntl.h>
+# include <unistd.h>
+# include <sys/types.h>
+# include <sys/mman.h>
+# ifndef MAP_FILE
+#  define MAP_FILE 0
+# endif
+#endif
+]], [[
+  char *fence = NULL;
+#if HAVE_SYS_MMAN_H && HAVE_MPROTECT
+# if HAVE_MAP_ANONYMOUS
+  const int flags = MAP_ANONYMOUS | MAP_PRIVATE;
+  const int fd = -1;
+# else /* !HAVE_MAP_ANONYMOUS */
+  const int flags = MAP_FILE | MAP_PRIVATE;
+  int fd = open ("/dev/zero", O_RDONLY, 0666);
+  if (fd >= 0)
+# endif
+    {
+      int pagesize = getpagesize ();
+      char *two_pages =
+        (char *) mmap (NULL, 2 * pagesize, PROT_READ | PROT_WRITE,
+                       flags, fd, 0);
+      if (two_pages != (char *)(-1)
+          && mprotect (two_pages + pagesize, pagesize, PROT_NONE) == 0)
+        fence = two_pages + pagesize;
+    }
+#endif
+  if (fence)
+    {
+      char dest[8];
+
+      dest[0] = '*';
+      dest[1] = 'a';
+      dest[2] = '\0';
+      dest[3] = 'w';
+      dest[4] = 'x';
+      dest[5] = 'y';
+      dest[6] = 'z';
+
+      *(fence - 3) = '7';
+      *(fence - 2) = '2';
+      *(fence - 1) = '9';
+
+      if (strncat (dest + 1, fence - 3, 3) != dest + 1)
+        return 1;
+      if (dest[0] != '*')
+        return 2;
+      if (dest[1] != 'a'
+          || dest[2] != '7' || dest[3] != '2' || dest[4] != '9'
+          || dest[5] != '\0')
+        return 3;
+      if (dest[6] != 'z')
+        return 4;
+    }
+  return 0;
+]])], [gl_cv_func_strncat_works=yes], [gl_cv_func_strncat_works=no],
+       [
+        case "$host_os" in
+                    # Guess no on Solaris.
+          solaris*) gl_cv_func_strncat_works="guessing no";;
+                    # Guess yes otherwise.
+          *)        gl_cv_func_strncat_works="guessing yes";;
+        esac
+       ])
+    ])
+  case "$gl_cv_func_strncat_works" in
+    *yes) ;;
+    *)
+      REPLACE_STRNCAT=1
+      AC_LIBOBJ([strncat])
+      gl_PREREQ_STRNCAT
+      ;;
+  esac
+])
+
+# Prerequisites of lib/strncat.c.
+AC_DEFUN([gl_PREREQ_STRNCAT], [
+  :
+])
diff --git a/gnulib-m4/thread.m4 b/gnulib-m4/thread.m4
new file mode 100644
index 00000000..8e79075b
--- /dev/null
+++ b/gnulib-m4/thread.m4
@@ -0,0 +1,18 @@
+# thread.m4 serial 2
+dnl Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_THREAD],
+[
+  AC_REQUIRE([gl_THREADLIB])
+  AC_REQUIRE([AC_C_INLINE])
+
+  if test $gl_threads_api = posix; then
+    gl_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBMULTITHREAD"
+    AC_CHECK_FUNCS([pthread_atfork])
+    LIBS="$gl_save_LIBS"
+  fi
+])
diff --git a/gnulib-m4/threadlib.m4 b/gnulib-m4/threadlib.m4
new file mode 100644
index 00000000..05cc4ffa
--- /dev/null
+++ b/gnulib-m4/threadlib.m4
@@ -0,0 +1,347 @@
+# threadlib.m4 serial 5 (gettext-0.18)
+dnl Copyright (C) 2005-2010 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl gl_THREADLIB
+dnl ------------
+dnl Tests for a multithreading library to be used.
+dnl Defines at most one of the macros USE_POSIX_THREADS, USE_SOLARIS_THREADS,
+dnl USE_PTH_THREADS, USE_WIN32_THREADS
+dnl Sets the variables LIBTHREAD and LTLIBTHREAD to the linker options for use
+dnl in a Makefile (LIBTHREAD for use without libtool, LTLIBTHREAD for use with
+dnl libtool).
+dnl Sets the variables LIBMULTITHREAD and LTLIBMULTITHREAD similarly, for
+dnl programs that really need multithread functionality. The difference
+dnl between LIBTHREAD and LIBMULTITHREAD is that on platforms supporting weak
+dnl symbols, typically LIBTHREAD="" whereas LIBMULTITHREAD="-lpthread".
+dnl Adds to CPPFLAGS the flag -D_REENTRANT or -D_THREAD_SAFE if needed for
+dnl multithread-safe programs.
+
+AC_DEFUN([gl_THREADLIB_EARLY],
+[
+  AC_REQUIRE([gl_THREADLIB_EARLY_BODY])
+])
+
+dnl The guts of gl_THREADLIB_EARLY. Needs to be expanded only once.
+
+AC_DEFUN([gl_THREADLIB_EARLY_BODY],
+[
+  dnl Ordering constraints: This macro modifies CPPFLAGS in a way that
+  dnl influences the result of the autoconf tests that test for *_unlocked
+  dnl declarations, on AIX 5 at least. Therefore it must come early.
+  AC_BEFORE([$0], [gl_FUNC_GLIBC_UNLOCKED_IO])dnl
+  AC_BEFORE([$0], [gl_ARGP])dnl
+
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  dnl _GNU_SOURCE is needed for pthread_rwlock_t on glibc systems.
+  dnl AC_USE_SYSTEM_EXTENSIONS was introduced in autoconf 2.60 and obsoletes
+  dnl AC_GNU_SOURCE.
+  m4_ifdef([AC_USE_SYSTEM_EXTENSIONS],
+    [AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])],
+    [AC_REQUIRE([AC_GNU_SOURCE])])
+  dnl Check for multithreading.
+  m4_divert_text([DEFAULTS], [gl_use_threads_default=])
+  AC_ARG_ENABLE([threads],
+AC_HELP_STRING([--enable-threads={posix|solaris|pth|win32}], [specify multithreading API])
+AC_HELP_STRING([--disable-threads], [build without multithread safety]),
+    [gl_use_threads=$enableval],
+    [if test -n "$gl_use_threads_default"; then
+       gl_use_threads="$gl_use_threads_default"
+     else
+changequote(,)dnl
+       case "$host_os" in
+         dnl Disable multithreading by default on OSF/1, because it interferes
+         dnl with fork()/exec(): When msgexec is linked with -lpthread, its
+         dnl child process gets an endless segmentation fault inside execvp().
+         dnl Disable multithreading by default on Cygwin 1.5.x, because it has
+         dnl bugs that lead to endless loops or crashes. See
+         dnl <http://cygwin.com/ml/cygwin/2009-08/msg00283.html>.
+         osf*) gl_use_threads=no ;;
+         cygwin*)
+               case `uname -r` in
+                 1.[0-5].*) gl_use_threads=no ;;
+                 *)         gl_use_threads=yes ;;
+               esac
+               ;;
+         *)    gl_use_threads=yes ;;
+       esac
+changequote([,])dnl
+     fi
+    ])
+  if test "$gl_use_threads" = yes || test "$gl_use_threads" = posix; then
+    # For using <pthread.h>:
+    case "$host_os" in
+      osf*)
+        # On OSF/1, the compiler needs the flag -D_REENTRANT so that it
+        # groks <pthread.h>. cc also understands the flag -pthread, but
+        # we don't use it because 1. gcc-2.95 doesn't understand -pthread,
+        # 2. putting a flag into CPPFLAGS that has an effect on the linker
+        # causes the AC_TRY_LINK test below to succeed unexpectedly,
+        # leading to wrong values of LIBTHREAD and LTLIBTHREAD.
+        CPPFLAGS="$CPPFLAGS -D_REENTRANT"
+        ;;
+    esac
+    # Some systems optimize for single-threaded programs by default, and
+    # need special flags to disable these optimizations. For example, the
+    # definition of 'errno' in <errno.h>.
+    case "$host_os" in
+      aix* | freebsd*) CPPFLAGS="$CPPFLAGS -D_THREAD_SAFE" ;;
+      solaris*) CPPFLAGS="$CPPFLAGS -D_REENTRANT" ;;
+    esac
+  fi
+])
+
+dnl The guts of gl_THREADLIB. Needs to be expanded only once.
+
+AC_DEFUN([gl_THREADLIB_BODY],
+[
+  AC_REQUIRE([gl_THREADLIB_EARLY_BODY])
+  gl_threads_api=none
+  LIBTHREAD=
+  LTLIBTHREAD=
+  LIBMULTITHREAD=
+  LTLIBMULTITHREAD=
+  if test "$gl_use_threads" != no; then
+    dnl Check whether the compiler and linker support weak declarations.
+    AC_CACHE_CHECK([whether imported symbols can be declared weak],
+      [gl_cv_have_weak],
+      [gl_cv_have_weak=no
+       dnl First, test whether the compiler accepts it syntactically.
+       AC_TRY_LINK([extern void xyzzy ();
+#pragma weak xyzzy], [xyzzy();], [gl_cv_have_weak=maybe])
+       if test $gl_cv_have_weak = maybe; then
+         dnl Second, test whether it actually works. On Cygwin 1.7.2, with
+         dnl gcc 4.3, symbols declared weak always evaluate to the address 0.
+         AC_TRY_RUN([
+#include <stdio.h>
+#pragma weak fputs
+int main ()
+{
+  return (fputs == NULL);
+}], [gl_cv_have_weak=yes], [gl_cv_have_weak=no],
+           [dnl When cross-compiling, assume that only ELF platforms support
+            dnl weak symbols.
+            AC_EGREP_CPP([Extensible Linking Format],
+              [#ifdef __ELF__
+               Extensible Linking Format
+               #endif
+              ],
+              [gl_cv_have_weak="guessing yes"],
+              [gl_cv_have_weak="guessing no"])
+           ])
+       fi
+      ])
+    if test "$gl_use_threads" = yes || test "$gl_use_threads" = posix; then
+      # On OSF/1, the compiler needs the flag -pthread or -D_REENTRANT so that
+      # it groks <pthread.h>. It's added above, in gl_THREADLIB_EARLY_BODY.
+      AC_CHECK_HEADER([pthread.h],
+        [gl_have_pthread_h=yes], [gl_have_pthread_h=no])
+      if test "$gl_have_pthread_h" = yes; then
+        # Other possible tests:
+        #   -lpthreads (FSU threads, PCthreads)
+        #   -lgthreads
+        gl_have_pthread=
+        # Test whether both pthread_mutex_lock and pthread_mutexattr_init exist
+        # in libc. IRIX 6.5 has the first one in both libc and libpthread, but
+        # the second one only in libpthread, and lock.c needs it.
+        AC_TRY_LINK([#include <pthread.h>],
+          [pthread_mutex_lock((pthread_mutex_t*)0);
+           pthread_mutexattr_init((pthread_mutexattr_t*)0);],
+          [gl_have_pthread=yes])
+        # Test for libpthread by looking for pthread_kill. (Not pthread_self,
+        # since it is defined as a macro on OSF/1.)
+        if test -n "$gl_have_pthread"; then
+          # The program links fine without libpthread. But it may actually
+          # need to link with libpthread in order to create multiple threads.
+          AC_CHECK_LIB([pthread], [pthread_kill],
+            [LIBMULTITHREAD=-lpthread LTLIBMULTITHREAD=-lpthread
+             # On Solaris and HP-UX, most pthread functions exist also in libc.
+             # Therefore pthread_in_use() needs to actually try to create a
+             # thread: pthread_create from libc will fail, whereas
+             # pthread_create will actually create a thread.
+             case "$host_os" in
+               solaris* | hpux*)
+                 AC_DEFINE([PTHREAD_IN_USE_DETECTION_HARD], [1],
+                   [Define if the pthread_in_use() detection is hard.])
+             esac
+            ])
+        else
+          # Some library is needed. Try libpthread and libc_r.
+          AC_CHECK_LIB([pthread], [pthread_kill],
+            [gl_have_pthread=yes
+             LIBTHREAD=-lpthread LTLIBTHREAD=-lpthread
+             LIBMULTITHREAD=-lpthread LTLIBMULTITHREAD=-lpthread])
+          if test -z "$gl_have_pthread"; then
+            # For FreeBSD 4.
+            AC_CHECK_LIB([c_r], [pthread_kill],
+              [gl_have_pthread=yes
+               LIBTHREAD=-lc_r LTLIBTHREAD=-lc_r
+               LIBMULTITHREAD=-lc_r LTLIBMULTITHREAD=-lc_r])
+          fi
+        fi
+        if test -n "$gl_have_pthread"; then
+          gl_threads_api=posix
+          AC_DEFINE([USE_POSIX_THREADS], [1],
+            [Define if the POSIX multithreading library can be used.])
+          if test -n "$LIBMULTITHREAD" || test -n "$LTLIBMULTITHREAD"; then
+            if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then
+              AC_DEFINE([USE_POSIX_THREADS_WEAK], [1],
+                [Define if references to the POSIX multithreading library should be made weak.])
+              LIBTHREAD=
+              LTLIBTHREAD=
+            fi
+          fi
+        fi
+      fi
+    fi
+    if test -z "$gl_have_pthread"; then
+      if test "$gl_use_threads" = yes || test "$gl_use_threads" = solaris; then
+        gl_have_solaristhread=
+        gl_save_LIBS="$LIBS"
+        LIBS="$LIBS -lthread"
+        AC_TRY_LINK([#include <thread.h>
+#include <synch.h>],
+          [thr_self();],
+          [gl_have_solaristhread=yes])
+        LIBS="$gl_save_LIBS"
+        if test -n "$gl_have_solaristhread"; then
+          gl_threads_api=solaris
+          LIBTHREAD=-lthread
+          LTLIBTHREAD=-lthread
+          LIBMULTITHREAD="$LIBTHREAD"
+          LTLIBMULTITHREAD="$LTLIBTHREAD"
+          AC_DEFINE([USE_SOLARIS_THREADS], [1],
+            [Define if the old Solaris multithreading library can be used.])
+          if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then
+            AC_DEFINE([USE_SOLARIS_THREADS_WEAK], [1],
+              [Define if references to the old Solaris multithreading library should be made weak.])
+            LIBTHREAD=
+            LTLIBTHREAD=
+          fi
+        fi
+      fi
+    fi
+    if test "$gl_use_threads" = pth; then
+      gl_save_CPPFLAGS="$CPPFLAGS"
+      AC_LIB_LINKFLAGS([pth])
+      gl_have_pth=
+      gl_save_LIBS="$LIBS"
+      LIBS="$LIBS -lpth"
+      AC_TRY_LINK([#include <pth.h>], [pth_self();], [gl_have_pth=yes])
+      LIBS="$gl_save_LIBS"
+      if test -n "$gl_have_pth"; then
+        gl_threads_api=pth
+        LIBTHREAD="$LIBPTH"
+        LTLIBTHREAD="$LTLIBPTH"
+        LIBMULTITHREAD="$LIBTHREAD"
+        LTLIBMULTITHREAD="$LTLIBTHREAD"
+        AC_DEFINE([USE_PTH_THREADS], [1],
+          [Define if the GNU Pth multithreading library can be used.])
+        if test -n "$LIBMULTITHREAD" || test -n "$LTLIBMULTITHREAD"; then
+          if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then
+            AC_DEFINE([USE_PTH_THREADS_WEAK], [1],
+              [Define if references to the GNU Pth multithreading library should be made weak.])
+            LIBTHREAD=
+            LTLIBTHREAD=
+          fi
+        fi
+      else
+        CPPFLAGS="$gl_save_CPPFLAGS"
+      fi
+    fi
+    if test -z "$gl_have_pthread"; then
+      if test "$gl_use_threads" = yes || test "$gl_use_threads" = win32; then
+        if { case "$host_os" in
+               mingw*) true;;
+               *) false;;
+             esac
+           }; then
+          gl_threads_api=win32
+          AC_DEFINE([USE_WIN32_THREADS], [1],
+            [Define if the Win32 multithreading API can be used.])
+        fi
+      fi
+    fi
+  fi
+  AC_MSG_CHECKING([for multithread API to use])
+  AC_MSG_RESULT([$gl_threads_api])
+  AC_SUBST([LIBTHREAD])
+  AC_SUBST([LTLIBTHREAD])
+  AC_SUBST([LIBMULTITHREAD])
+  AC_SUBST([LTLIBMULTITHREAD])
+])
+
+AC_DEFUN([gl_THREADLIB],
+[
+  AC_REQUIRE([gl_THREADLIB_EARLY])
+  AC_REQUIRE([gl_THREADLIB_BODY])
+])
+
+
+dnl gl_DISABLE_THREADS
+dnl ------------------
+dnl Sets the gl_THREADLIB default so that threads are not used by default.
+dnl The user can still override it at installation time, by using the
+dnl configure option '--enable-threads'.
+
+AC_DEFUN([gl_DISABLE_THREADS], [
+  m4_divert_text([INIT_PREPARE], [gl_use_threads_default=no])
+])
+
+
+dnl Survey of platforms:
+dnl
+dnl Platform          Available   Compiler    Supports   test-lock
+dnl                   flavours    option      weak       result
+dnl ---------------   ---------   ---------   --------   ---------
+dnl Linux 2.4/glibc   posix       -lpthread       Y      OK
+dnl
+dnl GNU Hurd/glibc    posix
+dnl
+dnl FreeBSD 5.3       posix       -lc_r           Y
+dnl                   posix       -lkse ?         Y
+dnl                   posix       -lpthread ?     Y
+dnl                   posix       -lthr           Y
+dnl
+dnl FreeBSD 5.2       posix       -lc_r           Y
+dnl                   posix       -lkse           Y
+dnl                   posix       -lthr           Y
+dnl
+dnl FreeBSD 4.0,4.10  posix       -lc_r           Y      OK
+dnl
+dnl NetBSD 1.6        --
+dnl
+dnl OpenBSD 3.4       posix       -lpthread       Y      OK
+dnl
+dnl MacOS X 10.[123]  posix       -lpthread       Y      OK
+dnl
+dnl Solaris 7,8,9     posix       -lpthread       Y      Sol 7,8: 0.0; Sol 9: OK
+dnl                   solaris     -lthread        Y      Sol 7,8: 0.0; Sol 9: OK
+dnl
+dnl HP-UX 11          posix       -lpthread       N (cc) OK
+dnl                                               Y (gcc)
+dnl
+dnl IRIX 6.5          posix       -lpthread       Y      0.5
+dnl
+dnl AIX 4.3,5.1       posix       -lpthread       N      AIX 4: 0.5; AIX 5: OK
+dnl
+dnl OSF/1 4.0,5.1     posix       -pthread (cc)   N      OK
+dnl                               -lpthread (gcc) Y
+dnl
+dnl Cygwin            posix       -lpthread       Y      OK
+dnl
+dnl Any of the above  pth         -lpth                  0.0
+dnl
+dnl Mingw             win32                       N      OK
+dnl
+dnl BeOS 5            --
+dnl
+dnl The test-lock result shows what happens if in test-lock.c EXPLICIT_YIELD is
+dnl turned off:
+dnl   OK if all three tests terminate OK,
+dnl   0.5 if the first test terminates OK but the second one loops endlessly,
+dnl   0.0 if the first test already loops endlessly.
diff --git a/gnulib-m4/unistd_h.m4 b/gnulib-m4/unistd_h.m4
index d7a89e13..b26d0a92 100644
--- a/gnulib-m4/unistd_h.m4
+++ b/gnulib-m4/unistd_h.m4
@@ -1,5 +1,5 @@
-# unistd_h.m4 serial 19
-dnl Copyright (C) 2006-2009 Free Software Foundation, Inc.
+# unistd_h.m4 serial 46
+dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -11,6 +11,7 @@ AC_DEFUN([gl_UNISTD_H],
   dnl Use AC_REQUIRE here, so that the default behavior below is expanded
   dnl once only, before all statements that occur in other macros.
   AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([AC_C_INLINE])
 
   gl_CHECK_NEXT_HEADERS([unistd.h])
 
@@ -21,13 +22,33 @@ AC_DEFUN([gl_UNISTD_H],
     HAVE_UNISTD_H=0
   fi
   AC_SUBST([HAVE_UNISTD_H])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <unistd.h>
+/* Some systems declare various items in the wrong headers.  */
+#ifndef __GLIBC__
+# include <fcntl.h>
+# include <stdio.h>
+# include <stdlib.h>
+# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+#  include <io.h>
+# endif
+#endif
+    ]], [chown dup2 dup3 environ euidaccess faccessat fchdir fchownat
+    fsync ftruncate getcwd getdomainname getdtablesize getgroups
+    gethostname getlogin getlogin_r getpagesize getusershell setusershell
+    endusershell lchown link linkat lseek pipe2 pread readlink readlinkat
+    rmdir sleep symlink symlinkat ttyname_r unlink unlinkat usleep])
 ])
 
 AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],
 [
   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
   AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
 AC_DEFUN([gl_UNISTD_H_DEFAULTS],
@@ -35,51 +56,98 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
   GNULIB_CHOWN=0;            AC_SUBST([GNULIB_CHOWN])
   GNULIB_CLOSE=0;            AC_SUBST([GNULIB_CLOSE])
   GNULIB_DUP2=0;             AC_SUBST([GNULIB_DUP2])
+  GNULIB_DUP3=0;             AC_SUBST([GNULIB_DUP3])
   GNULIB_ENVIRON=0;          AC_SUBST([GNULIB_ENVIRON])
   GNULIB_EUIDACCESS=0;       AC_SUBST([GNULIB_EUIDACCESS])
+  GNULIB_FACCESSAT=0;        AC_SUBST([GNULIB_FACCESSAT])
   GNULIB_FCHDIR=0;           AC_SUBST([GNULIB_FCHDIR])
+  GNULIB_FCHOWNAT=0;         AC_SUBST([GNULIB_FCHOWNAT])
   GNULIB_FSYNC=0;            AC_SUBST([GNULIB_FSYNC])
   GNULIB_FTRUNCATE=0;        AC_SUBST([GNULIB_FTRUNCATE])
   GNULIB_GETCWD=0;           AC_SUBST([GNULIB_GETCWD])
   GNULIB_GETDOMAINNAME=0;    AC_SUBST([GNULIB_GETDOMAINNAME])
   GNULIB_GETDTABLESIZE=0;    AC_SUBST([GNULIB_GETDTABLESIZE])
+  GNULIB_GETGROUPS=0;        AC_SUBST([GNULIB_GETGROUPS])
   GNULIB_GETHOSTNAME=0;      AC_SUBST([GNULIB_GETHOSTNAME])
+  GNULIB_GETLOGIN=0;         AC_SUBST([GNULIB_GETLOGIN])
   GNULIB_GETLOGIN_R=0;       AC_SUBST([GNULIB_GETLOGIN_R])
   GNULIB_GETPAGESIZE=0;      AC_SUBST([GNULIB_GETPAGESIZE])
   GNULIB_GETUSERSHELL=0;     AC_SUBST([GNULIB_GETUSERSHELL])
   GNULIB_LCHOWN=0;           AC_SUBST([GNULIB_LCHOWN])
   GNULIB_LINK=0;             AC_SUBST([GNULIB_LINK])
+  GNULIB_LINKAT=0;           AC_SUBST([GNULIB_LINKAT])
   GNULIB_LSEEK=0;            AC_SUBST([GNULIB_LSEEK])
+  GNULIB_PIPE2=0;            AC_SUBST([GNULIB_PIPE2])
+  GNULIB_PREAD=0;            AC_SUBST([GNULIB_PREAD])
   GNULIB_READLINK=0;         AC_SUBST([GNULIB_READLINK])
+  GNULIB_READLINKAT=0;       AC_SUBST([GNULIB_READLINKAT])
+  GNULIB_RMDIR=0;            AC_SUBST([GNULIB_RMDIR])
   GNULIB_SLEEP=0;            AC_SUBST([GNULIB_SLEEP])
+  GNULIB_SYMLINK=0;          AC_SUBST([GNULIB_SYMLINK])
+  GNULIB_SYMLINKAT=0;        AC_SUBST([GNULIB_SYMLINKAT])
+  GNULIB_TTYNAME_R=0;        AC_SUBST([GNULIB_TTYNAME_R])
   GNULIB_UNISTD_H_GETOPT=0;  AC_SUBST([GNULIB_UNISTD_H_GETOPT])
   GNULIB_UNISTD_H_SIGPIPE=0; AC_SUBST([GNULIB_UNISTD_H_SIGPIPE])
+  GNULIB_UNLINK=0;           AC_SUBST([GNULIB_UNLINK])
+  GNULIB_UNLINKAT=0;         AC_SUBST([GNULIB_UNLINKAT])
+  GNULIB_USLEEP=0;           AC_SUBST([GNULIB_USLEEP])
   GNULIB_WRITE=0;            AC_SUBST([GNULIB_WRITE])
   dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_CHOWN=1;           AC_SUBST([HAVE_CHOWN])
   HAVE_DUP2=1;            AC_SUBST([HAVE_DUP2])
+  HAVE_DUP3=1;            AC_SUBST([HAVE_DUP3])
   HAVE_EUIDACCESS=1;      AC_SUBST([HAVE_EUIDACCESS])
+  HAVE_FACCESSAT=1;       AC_SUBST([HAVE_FACCESSAT])
+  HAVE_FCHDIR=1;          AC_SUBST([HAVE_FCHDIR])
+  HAVE_FCHOWNAT=1;        AC_SUBST([HAVE_FCHOWNAT])
   HAVE_FSYNC=1;           AC_SUBST([HAVE_FSYNC])
   HAVE_FTRUNCATE=1;       AC_SUBST([HAVE_FTRUNCATE])
   HAVE_GETDOMAINNAME=1;   AC_SUBST([HAVE_GETDOMAINNAME])
   HAVE_GETDTABLESIZE=1;   AC_SUBST([HAVE_GETDTABLESIZE])
+  HAVE_GETGROUPS=1;       AC_SUBST([HAVE_GETGROUPS])
   HAVE_GETHOSTNAME=1;     AC_SUBST([HAVE_GETHOSTNAME])
+  HAVE_GETLOGIN=1;        AC_SUBST([HAVE_GETLOGIN])
   HAVE_GETPAGESIZE=1;     AC_SUBST([HAVE_GETPAGESIZE])
-  HAVE_GETUSERSHELL=1;    AC_SUBST([HAVE_GETUSERSHELL])
+  HAVE_LCHOWN=1;          AC_SUBST([HAVE_LCHOWN])
   HAVE_LINK=1;            AC_SUBST([HAVE_LINK])
+  HAVE_LINKAT=1;          AC_SUBST([HAVE_LINKAT])
+  HAVE_PIPE2=1;           AC_SUBST([HAVE_PIPE2])
+  HAVE_PREAD=1;           AC_SUBST([HAVE_PREAD])
   HAVE_READLINK=1;        AC_SUBST([HAVE_READLINK])
+  HAVE_READLINKAT=1;      AC_SUBST([HAVE_READLINKAT])
   HAVE_SLEEP=1;           AC_SUBST([HAVE_SLEEP])
+  HAVE_SYMLINK=1;         AC_SUBST([HAVE_SYMLINK])
+  HAVE_SYMLINKAT=1;       AC_SUBST([HAVE_SYMLINKAT])
+  HAVE_TTYNAME_R=1;       AC_SUBST([HAVE_TTYNAME_R])
+  HAVE_UNLINKAT=1;        AC_SUBST([HAVE_UNLINKAT])
+  HAVE_USLEEP=1;          AC_SUBST([HAVE_USLEEP])
   HAVE_DECL_ENVIRON=1;    AC_SUBST([HAVE_DECL_ENVIRON])
   HAVE_DECL_GETLOGIN_R=1; AC_SUBST([HAVE_DECL_GETLOGIN_R])
+  HAVE_DECL_GETPAGESIZE=1; AC_SUBST([HAVE_DECL_GETPAGESIZE])
+  HAVE_DECL_GETUSERSHELL=1; AC_SUBST([HAVE_DECL_GETUSERSHELL])
   HAVE_OS_H=0;            AC_SUBST([HAVE_OS_H])
   HAVE_SYS_PARAM_H=0;     AC_SUBST([HAVE_SYS_PARAM_H])
   REPLACE_CHOWN=0;        AC_SUBST([REPLACE_CHOWN])
   REPLACE_CLOSE=0;        AC_SUBST([REPLACE_CLOSE])
+  REPLACE_DUP=0;          AC_SUBST([REPLACE_DUP])
   REPLACE_DUP2=0;         AC_SUBST([REPLACE_DUP2])
-  REPLACE_FCHDIR=0;       AC_SUBST([REPLACE_FCHDIR])
+  REPLACE_FCHOWNAT=0;     AC_SUBST([REPLACE_FCHOWNAT])
   REPLACE_GETCWD=0;       AC_SUBST([REPLACE_GETCWD])
+  REPLACE_GETGROUPS=0;    AC_SUBST([REPLACE_GETGROUPS])
   REPLACE_GETPAGESIZE=0;  AC_SUBST([REPLACE_GETPAGESIZE])
   REPLACE_LCHOWN=0;       AC_SUBST([REPLACE_LCHOWN])
+  REPLACE_LINK=0;         AC_SUBST([REPLACE_LINK])
+  REPLACE_LINKAT=0;       AC_SUBST([REPLACE_LINKAT])
   REPLACE_LSEEK=0;        AC_SUBST([REPLACE_LSEEK])
+  REPLACE_PREAD=0;        AC_SUBST([REPLACE_PREAD])
+  REPLACE_READLINK=0;     AC_SUBST([REPLACE_READLINK])
+  REPLACE_RMDIR=0;        AC_SUBST([REPLACE_RMDIR])
+  REPLACE_SLEEP=0;        AC_SUBST([REPLACE_SLEEP])
+  REPLACE_SYMLINK=0;      AC_SUBST([REPLACE_SYMLINK])
+  REPLACE_TTYNAME_R=0;    AC_SUBST([REPLACE_TTYNAME_R])
+  REPLACE_UNLINK=0;       AC_SUBST([REPLACE_UNLINK])
+  REPLACE_UNLINKAT=0;     AC_SUBST([REPLACE_UNLINKAT])
+  REPLACE_USLEEP=0;       AC_SUBST([REPLACE_USLEEP])
   REPLACE_WRITE=0;        AC_SUBST([REPLACE_WRITE])
   UNISTD_H_HAVE_WINSOCK2_H=0; AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H])
   UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0;
diff --git a/gnulib-m4/vasnprintf.m4 b/gnulib-m4/vasnprintf.m4
index 3a1d1e01..ebe3c52c 100644
--- a/gnulib-m4/vasnprintf.m4
+++ b/gnulib-m4/vasnprintf.m4
@@ -1,5 +1,5 @@
-# vasnprintf.m4 serial 29
-dnl Copyright (C) 2002-2004, 2006-2009 Free Software Foundation, Inc.
+# vasnprintf.m4 serial 31
+dnl Copyright (C) 2002-2004, 2006-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -54,6 +54,7 @@ AC_DEFUN([gl_PREREQ_PRINTF_PARSE],
 # Prerequisites of lib/vasnprintf.c.
 AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF],
 [
+  AC_REQUIRE([AC_C_INLINE])
   AC_REQUIRE([AC_FUNC_ALLOCA])
   AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
   AC_REQUIRE([gt_TYPE_WCHAR_T])
@@ -62,6 +63,17 @@ AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF],
   dnl Use the _snprintf function only if it is declared (because on NetBSD it
   dnl is defined as a weak alias of snprintf; we prefer to use the latter).
   AC_CHECK_DECLS([_snprintf], , , [#include <stdio.h>])
+  dnl We can avoid a lot of code by assuming that snprintf's return value
+  dnl conforms to ISO C99. So check that.
+  AC_REQUIRE([gl_SNPRINTF_RETVAL_C99])
+  case "$gl_cv_func_snprintf_retval_c99" in
+    *yes)
+      AC_DEFINE([HAVE_SNPRINTF_RETVAL_C99], [1],
+        [Define if the return value of the snprintf function is the number of
+         of bytes (excluding the terminating NUL) that would have been produced
+         if the buffer had been large enough.])
+      ;;
+  esac
 ])
 
 # Extra prerequisites of lib/vasnprintf.c for supporting 'long double'
diff --git a/gnulib-m4/warn-on-use.m4 b/gnulib-m4/warn-on-use.m4
new file mode 100644
index 00000000..42daae87
--- /dev/null
+++ b/gnulib-m4/warn-on-use.m4
@@ -0,0 +1,45 @@
+# warn-on-use.m4 serial 2
+dnl Copyright (C) 2010 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# gl_WARN_ON_USE_PREPARE(INCLUDES, NAMES)
+# ---------------------------------------
+# For each whitespace-separated element in the list of NAMES, define
+# HAVE_RAW_DECL_name if the function has a declaration among INCLUDES
+# even after being undefined as a macro.
+#
+# See warn-on-use.h for some hints on how to poison function names, as
+# well as ideas on poisoning global variables and macros.  NAMES may
+# include global variables, but remember that only functions work with
+# _GL_WARN_ON_USE.  Typically, INCLUDES only needs to list a single
+# header, but if the replacement header pulls in other headers because
+# some systems declare functions in the wrong header, then INCLUDES
+# should do likewise.
+#
+# If you assume C89, then it is generally safe to assume declarations
+# for functions declared in that standard (such as gets) without
+# needing gl_WARN_ON_USE_PREPARE.
+AC_DEFUN([gl_WARN_ON_USE_PREPARE],
+[
+  m4_foreach_w([gl_decl], [$2],
+    [AH_TEMPLATE([HAVE_RAW_DECL_]AS_TR_CPP(m4_defn([gl_decl])),
+      [Define to 1 if ]m4_defn([gl_decl])[ is declared even after
+       undefining macros.])])dnl
+  for gl_func in m4_flatten([$2]); do
+    AS_VAR_PUSHDEF([gl_Symbol], [gl_cv_have_raw_decl_$gl_func])dnl
+    AC_CACHE_CHECK([whether $gl_func is declared without a macro],
+      gl_Symbol,
+      [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$1],
+[@%:@undef $gl_func
+  (void) $gl_func;])],
+        [AS_VAR_SET(gl_Symbol, [yes])], [AS_VAR_SET(gl_Symbol, [no])])])
+     AS_VAR_IF(gl_Symbol, [yes],
+       [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_RAW_DECL_$gl_func]), [1])
+       dnl shortcut - if the raw declaration exists, then set a cache
+       dnl variable to allow skipping any later AC_CHECK_DECL efforts
+       eval ac_cv_have_decl_$gl_func=yes])
+    AS_VAR_POPDEF([gl_Symbol])dnl
+  done
+])
diff --git a/gnulib-m4/wchar.m4 b/gnulib-m4/wchar_h.m4
index ce53a45c..8cae82dd 100644
--- a/gnulib-m4/wchar.m4
+++ b/gnulib-m4/wchar_h.m4
@@ -1,23 +1,30 @@
 dnl A placeholder for ISO C99 <wchar.h>, for platforms that have issues.
 
-dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
 dnl Written by Eric Blake.
 
-# wchar.m4 serial 25
+# wchar_h.m4 serial 33
 
 AC_DEFUN([gl_WCHAR_H],
 [
   AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
-  AC_CACHE_CHECK([whether <wchar.h> is standalone],
-    [gl_cv_header_wchar_h_standalone],
-    [AC_COMPILE_IFELSE([[#include <wchar.h>
-wchar_t w;]],
-      [gl_cv_header_wchar_h_standalone=yes],
-      [gl_cv_header_wchar_h_standalone=no])])
+  AC_REQUIRE([gl_WCHAR_H_INLINE_OK])
+  dnl Prepare for creating substitute <wchar.h>.
+  dnl Check for <wchar.h> (missing in Linux uClibc when built without wide
+  dnl character support).
+  dnl <wchar.h> is always overridden, because of GNULIB_POSIXCHECK.
+  AC_CHECK_HEADERS_ONCE([wchar.h])
+  gl_CHECK_NEXT_HEADERS([wchar.h])
+  if test $ac_cv_header_wchar_h = yes; then
+    HAVE_WCHAR_H=1
+  else
+    HAVE_WCHAR_H=0
+  fi
+  AC_SUBST([HAVE_WCHAR_H])
 
   AC_REQUIRE([gt_TYPE_WINT_T])
   if test $gt_cv_c_wint_t = yes; then
@@ -27,39 +34,82 @@ wchar_t w;]],
   fi
   AC_SUBST([HAVE_WINT_T])
 
-  dnl If <stddef.h> is replaced, then <wchar.h> must also be replaced.
-  AC_REQUIRE([gl_STDDEF_H])
-
-  if test $gl_cv_header_wchar_h_standalone != yes || test $gt_cv_c_wint_t != yes || test -n "$STDDEF_H"; then
-    WCHAR_H=wchar.h
-  fi
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[
+/* Some systems require additional headers.  */
+#ifndef __GLIBC__
+# include <stddef.h>
+# include <stdio.h>
+# include <time.h>
+#endif
+#include <wchar.h>
+    ]], [btowc wctob mbsinit mbrtowc mbrlen mbsrtowcs mbsnrtowcs wcrtomb
+    wcsrtombs wcsnrtombs wcwidth])
+])
 
-  dnl Prepare for creating substitute <wchar.h>.
-  dnl Do it always: WCHAR_H may be empty here but can be set later.
-  dnl Check for <wchar.h> (missing in Linux uClibc when built without wide
-  dnl character support).
-  AC_CHECK_HEADERS_ONCE([wchar.h])
-  if test $ac_cv_header_wchar_h = yes; then
-    HAVE_WCHAR_H=1
-  else
-    HAVE_WCHAR_H=0
+dnl Check whether <wchar.h> is usable at all.
+AC_DEFUN([gl_WCHAR_H_INLINE_OK],
+[
+  dnl Test whether <wchar.h> suffers due to the transition from '__inline' to
+  dnl 'gnu_inline'. See <http://sourceware.org/bugzilla/show_bug.cgi?id=4022>
+  dnl and <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42440>. In summary,
+  dnl glibc version 2.5 or older, together with gcc version 4.3 or newer and
+  dnl the option -std=c99 or -std=gnu99, leads to a broken <wchar.h>.
+  AC_CACHE_CHECK([whether <wchar.h> uses 'inline' correctly],
+    [gl_cv_header_wchar_h_correct_inline],
+    [gl_cv_header_wchar_h_correct_inline=yes
+     AC_LANG_CONFTEST([
+       AC_LANG_SOURCE([[#define wcstod renamed_wcstod
+#include <wchar.h>
+extern int zero (void);
+int main () { return zero(); }
+]])])
+     if AC_TRY_EVAL([ac_compile]); then
+       mv conftest.$ac_objext conftest1.$ac_objext
+       AC_LANG_CONFTEST([
+         AC_LANG_SOURCE([[#define wcstod renamed_wcstod
+#include <wchar.h>
+int zero (void) { return 0; }
+]])])
+       if AC_TRY_EVAL([ac_compile]); then
+         mv conftest.$ac_objext conftest2.$ac_objext
+         if $CC -o conftest$ac_exeext $CFLAGS $LDFLAGS conftest1.$ac_objext conftest2.$ac_objext $LIBS >&AS_MESSAGE_LOG_FD 2>&1; then
+           :
+         else
+           gl_cv_header_wchar_h_correct_inline=no
+         fi
+       fi
+     fi
+     rm -f conftest1.$ac_objext conftest2.$ac_objext conftest$ac_exeext
+    ])
+  if test $gl_cv_header_wchar_h_correct_inline = no; then
+    AC_MSG_ERROR([<wchar.h> cannot be used with this compiler ($CC $CFLAGS $CPPFLAGS).
+This is a known interoperability problem of glibc <= 2.5 with gcc >= 4.3 in
+C99 mode. You have four options:
+  - Add the flag -fgnu89-inline to CC and reconfigure, or
+  - Fix your include files, using parts of
+    <http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=b037a293a48718af30d706c2e18c929d0e69a621>, or
+  - Use a gcc version older than 4.3, or
+  - Don't use the flags -std=c99 or -std=gnu99.
+Configuration aborted.])
   fi
-  AC_SUBST([HAVE_WCHAR_H])
-  gl_CHECK_NEXT_HEADERS([wchar.h])
 ])
 
 dnl Unconditionally enables the replacement of <wchar.h>.
 AC_DEFUN([gl_REPLACE_WCHAR_H],
 [
-  AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
-  WCHAR_H=wchar.h
+  dnl This is a no-op, because <wchar.h> is always overridden.
+  :
 ])
 
 AC_DEFUN([gl_WCHAR_MODULE_INDICATOR],
 [
   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
   AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
-  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
 ])
 
 AC_DEFUN([gl_WCHAR_H_DEFAULTS],
@@ -99,5 +149,4 @@ AC_DEFUN([gl_WCHAR_H_DEFAULTS],
   REPLACE_WCSRTOMBS=0;  AC_SUBST([REPLACE_WCSRTOMBS])
   REPLACE_WCSNRTOMBS=0; AC_SUBST([REPLACE_WCSNRTOMBS])
   REPLACE_WCWIDTH=0;    AC_SUBST([REPLACE_WCWIDTH])
-  WCHAR_H='';           AC_SUBST([WCHAR_H])
 ])
diff --git a/gnulib-m4/wchar_t.m4 b/gnulib-m4/wchar_t.m4
index fb27a7f6..ed804e66 100644
--- a/gnulib-m4/wchar_t.m4
+++ b/gnulib-m4/wchar_t.m4
@@ -1,5 +1,5 @@
 # wchar_t.m4 serial 3 (gettext-0.18)
-dnl Copyright (C) 2002-2003, 2008, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2008-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/wctob.m4 b/gnulib-m4/wctob.m4
index 39270c9d..3af3cc7b 100644
--- a/gnulib-m4/wctob.m4
+++ b/gnulib-m4/wctob.m4
@@ -1,5 +1,5 @@
-# wctob.m4 serial 4
-dnl Copyright (C) 2008-2009 Free Software Foundation, Inc.
+# wctob.m4 serial 5
+dnl Copyright (C) 2008-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -17,6 +17,8 @@ AC_DEFUN([gl_FUNC_WCTOB],
   else
 
     dnl Solaris 9 has the wctob() function but it does not work.
+    dnl Cygwin 1.7.2 has the wctob() function but it clobbers caller-owned
+    dnl registers, see <http://cygwin.com/ml/cygwin/2010-05/msg00015.html>.
     AC_REQUIRE([AC_PROG_CC])
     AC_REQUIRE([gt_LOCALE_FR])
     AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
@@ -27,14 +29,35 @@ AC_DEFUN([gl_FUNC_WCTOB],
         dnl is present.
 changequote(,)dnl
         case "$host_os" in
-            # Guess no on Solaris <= 9.
-          solaris2.[1-9] | solaris2.[1-9].*)
+            # Guess no on Solaris <= 9 and Cygwin.
+          solaris2.[1-9] | solaris2.[1-9].* | cygwin*)
             gl_cv_func_wctob_works="guessing no" ;;
             # Guess yes otherwise.
           *) gl_cv_func_wctob_works="guessing yes" ;;
         esac
 changequote([,])dnl
-        if test $LOCALE_FR != none; then
+        case "$host_os" in
+          cygwin*)
+            AC_TRY_RUN([
+#include <locale.h>
+#include <wchar.h>
+
+register long global __asm__ ("%ebx");
+
+int main ()
+{
+  setlocale (LC_ALL, "en_US.UTF-8");
+
+  global = 0x12345678;
+  if (wctob (0x00FC) != -1)
+    return 1;
+  if (global != 0x12345678)
+    return 2;
+  return 0;
+}], [:], [gl_cv_func_wctob_works=no], [:])
+            ;;
+        esac
+        if test "$gl_cv_func_wctob_works" != no && test $LOCALE_FR != none; then
           AC_TRY_RUN([
 #include <locale.h>
 #include <string.h>
diff --git a/gnulib-m4/wctype.m4 b/gnulib-m4/wctype_h.m4
index 6a1b6f07..32924514 100644
--- a/gnulib-m4/wctype.m4
+++ b/gnulib-m4/wctype_h.m4
@@ -1,8 +1,8 @@
-# wctype.m4 serial 2
+# wctype_h.m4 serial 6
 
 dnl A placeholder for ISO C99 <wctype.h>, for platforms that lack it.
 
-dnl Copyright (C) 2006-2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -12,6 +12,7 @@ dnl Written by Paul Eggert.
 AC_DEFUN([gl_WCTYPE_H],
 [
   AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST])
   AC_CHECK_FUNCS_ONCE([iswcntrl])
   if test $ac_cv_func_iswcntrl = yes; then
     HAVE_ISWCNTRL=1
@@ -19,6 +20,13 @@ AC_DEFUN([gl_WCTYPE_H],
     HAVE_ISWCNTRL=0
   fi
   AC_SUBST([HAVE_ISWCNTRL])
+  AC_CHECK_FUNCS_ONCE([iswblank])
+  if test $ac_cv_func_iswblank = yes; then
+    HAVE_ISWBLANK=1
+  else
+    HAVE_ISWBLANK=0
+  fi
+  AC_SUBST([HAVE_ISWBLANK])
   AC_CHECK_HEADERS_ONCE([wctype.h])
   AC_REQUIRE([AC_C_INLINE])
 
@@ -30,40 +38,34 @@ AC_DEFUN([gl_WCTYPE_H],
   fi
   AC_SUBST([HAVE_WINT_T])
 
-  WCTYPE_H=wctype.h
   if test $ac_cv_header_wctype_h = yes; then
     if test $ac_cv_func_iswcntrl = yes; then
       dnl Linux libc5 has an iswprint function that returns 0 for all arguments.
       dnl The other functions are likely broken in the same way.
       AC_CACHE_CHECK([whether iswcntrl works], [gl_cv_func_iswcntrl_works],
         [
-          AC_TRY_RUN([#include <stddef.h>
-                      #include <stdio.h>
-                      #include <time.h>
-                      #include <wchar.h>
-                      #include <wctype.h>
-                      int main () { return iswprint ('x') == 0; }],
+          AC_RUN_IFELSE([AC_LANG_SOURCE([[
+                            #include <stddef.h>
+                            #include <stdio.h>
+                            #include <time.h>
+                            #include <wchar.h>
+                            #include <wctype.h>
+                            int main () { return iswprint ('x') == 0; }]])],
             [gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no],
-            [AC_TRY_COMPILE([#include <stdlib.h>
+            [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
                           #if __GNU_LIBRARY__ == 1
                           Linux libc5 i18n is broken.
-                          #endif], [],
+                          #endif]], [])],
               [gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no])
             ])
         ])
-      if test $gl_cv_func_iswcntrl_works = yes; then
-        WCTYPE_H=
-      fi
     fi
-    dnl Compute NEXT_WCTYPE_H even if WCTYPE_H is empty,
-    dnl for the benefit of builds from non-distclean directories.
     gl_CHECK_NEXT_HEADERS([wctype.h])
     HAVE_WCTYPE_H=1
   else
     HAVE_WCTYPE_H=0
   fi
   AC_SUBST([HAVE_WCTYPE_H])
-  AC_SUBST([WCTYPE_H])
 
   if test "$gl_cv_func_iswcntrl_works" = no; then
     REPLACE_ISWCNTRL=1
diff --git a/gnulib-m4/wcwidth.m4 b/gnulib-m4/wcwidth.m4
index 9cacb56f..acceba54 100644
--- a/gnulib-m4/wcwidth.m4
+++ b/gnulib-m4/wcwidth.m4
@@ -1,5 +1,5 @@
-# wcwidth.m4 serial 15
-dnl Copyright (C) 2006-2009 Free Software Foundation, Inc.
+# wcwidth.m4 serial 16
+dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -34,9 +34,7 @@ AC_DEFUN([gl_FUNC_WCWIDTH],
     HAVE_DECL_WCWIDTH=0
   fi
 
-  if test $ac_cv_func_wcwidth = no; then
-    REPLACE_WCWIDTH=1
-  else
+  if test $ac_cv_func_wcwidth = yes; then
     dnl On MacOS X 10.3, wcwidth(0x0301) (COMBINING ACUTE ACCENT) returns 1.
     dnl On OSF/1 5.1, wcwidth(0x200B) (ZERO WIDTH SPACE) returns 1.
     dnl This leads to bugs in 'ls' (coreutils).
@@ -84,11 +82,13 @@ changequote([,])dnl
       *no) REPLACE_WCWIDTH=1 ;;
     esac
   fi
-  if test $REPLACE_WCWIDTH = 1; then
+  if test $ac_cv_func_wcwidth != yes || test $REPLACE_WCWIDTH = 1; then
     AC_LIBOBJ([wcwidth])
   fi
-
-  if test $REPLACE_WCWIDTH = 1 || test $HAVE_DECL_WCWIDTH = 0; then
+  if test $ac_cv_func_wcwidth != yes || test $REPLACE_WCWIDTH = 1 \
+     || test $HAVE_DECL_WCWIDTH = 0; then
     gl_REPLACE_WCHAR_H
   fi
+  dnl We don't substitute HAVE_WCWIDTH. We assume that if the system does not
+  dnl have the wcwidth function, then it does not declare it.
 ])
diff --git a/gnulib-m4/wint_t.m4 b/gnulib-m4/wint_t.m4
index 47a4363d..a6c7d15c 100644
--- a/gnulib-m4/wint_t.m4
+++ b/gnulib-m4/wint_t.m4
@@ -1,5 +1,5 @@
 # wint_t.m4 serial 4 (gettext-0.18)
-dnl Copyright (C) 2003, 2007-2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2007-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/xalloc.m4 b/gnulib-m4/xalloc.m4
index 837a948c..83247fe3 100644
--- a/gnulib-m4/xalloc.m4
+++ b/gnulib-m4/xalloc.m4
@@ -1,5 +1,6 @@
 # xalloc.m4 serial 16
-dnl Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2003, 2004, 2005, 2006, 2009, 2010 Free Software
+dnl Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/xsize.m4 b/gnulib-m4/xsize.m4
index 631893cf..b653693a 100644
--- a/gnulib-m4/xsize.m4
+++ b/gnulib-m4/xsize.m4
@@ -1,5 +1,5 @@
 # xsize.m4 serial 4
-dnl Copyright (C) 2003-2004, 2008 Free Software Foundation, Inc.
+dnl Copyright (C) 2003-2004, 2008-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/gnulib-m4/yield.m4 b/gnulib-m4/yield.m4
new file mode 100644
index 00000000..7a543e4e
--- /dev/null
+++ b/gnulib-m4/yield.m4
@@ -0,0 +1,19 @@
+# yield.m4 serial 2
+dnl Copyright (C) 2005-2010 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_YIELD],
+[
+  AC_REQUIRE([gl_THREADLIB])
+  dnl On some systems, sched_yield is in librt, rather than in libpthread.
+  YIELD_LIB=
+  if test $gl_threads_api = posix; then
+    dnl Solaris has sched_yield in librt, not in libpthread or libc.
+    AC_CHECK_LIB([rt], [sched_yield], [YIELD_LIB=-lrt],
+      [dnl Solaris 2.5.1, 2.6 has sched_yield in libposix4, not librt.
+       AC_CHECK_LIB([posix4], [sched_yield], [YIELD_LIB=-lposix4])])
+  fi
+  AC_SUBST([YIELD_LIB])
+])