Merge branch 'feature/upstream' into develop

1 files changed, 80 insertions, 49 deletions

diff --git a/gnulib-m4/lib-prefix.m4 b/gnulib-m4/lib-prefix.m4
index 6851031d..9fc47a16 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, 2008-2016 Free Software Foundation, Inc.
+# lib-prefix.m4 serial 11
+dnl Copyright (C) 2001-2005, 2008-2017 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.
@@ -174,51 +174,82 @@ AC_DEFUN([AC_LIB_PREPARE_MULTILIB],
   dnl $prefix/lib/64 (which is a symlink to either $prefix/lib/sparcv9 or
   dnl $prefix/lib/amd64) and 32-bit libraries go under $prefix/lib.
   AC_REQUIRE([AC_CANONICAL_HOST])
-  acl_libdirstem=lib
-  acl_libdirstem2=
-  case "$host_os" in
-    solaris*)
-      dnl See Solaris 10 Software Developer Collection > Solaris 64-bit Developer's Guide > The Development Environment
-      dnl <http://docs.sun.com/app/docs/doc/816-5138/dev-env?l=en&a=view>.
-      dnl "Portable Makefiles should refer to any library directories using the 64 symbolic link."
-      dnl But we want to recognize the sparcv9 or amd64 subdirectory also if the
-      dnl symlink is missing, so we set acl_libdirstem2 too.
-      AC_CACHE_CHECK([for 64-bit host], [gl_cv_solaris_64bit],
-        [AC_EGREP_CPP([sixtyfour bits], [
-#ifdef _LP64
-sixtyfour bits
-#endif
-           ], [gl_cv_solaris_64bit=yes], [gl_cv_solaris_64bit=no])
-        ])
-      if test $gl_cv_solaris_64bit = yes; then
-        acl_libdirstem=lib/64
-        case "$host_cpu" in
-          sparc*)        acl_libdirstem2=lib/sparcv9 ;;
-          i*86 | x86_64) acl_libdirstem2=lib/amd64 ;;
-        esac
-      fi
-      ;;
-    *)
-      searchpath=`(LC_ALL=C $CC -print-search-dirs) 2>/dev/null | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'`
-      if test -n "$searchpath"; then
-        acl_save_IFS="${IFS= 	}"; IFS=":"
-        for searchdir in $searchpath; do
-          if test -d "$searchdir"; then
-            case "$searchdir" in
-              */lib64/ | */lib64 ) acl_libdirstem=lib64 ;;
-              */../ | */.. )
-                # Better ignore directories of this form. They are misleading.
-                ;;
-              *) searchdir=`cd "$searchdir" && pwd`
-                 case "$searchdir" in
-                   */lib64 ) acl_libdirstem=lib64 ;;
-                 esac ;;
-            esac
-          fi
-        done
-        IFS="$acl_save_IFS"
-      fi
-      ;;
-  esac
-  test -n "$acl_libdirstem2" || acl_libdirstem2="$acl_libdirstem"
+  AC_REQUIRE([gl_HOST_CPU_C_ABI])
+  dnl Allow the user to override the result by setting acl_cv_libdirstems.
+  AC_CACHE_CHECK([for the common suffixes of directories in the library search path],
+    [acl_cv_libdirstems],
+    [acl_libdirstem=lib
+     acl_libdirstem2=
+     case "$host_os" in
+       solaris*)
+         dnl See Solaris 10 Software Developer Collection > Solaris 64-bit Developer's Guide > The Development Environment
+         dnl <https://docs.oracle.com/cd/E19253-01/816-5138/dev-env/index.html>.
+         dnl "Portable Makefiles should refer to any library directories using the 64 symbolic link."
+         dnl But we want to recognize the sparcv9 or amd64 subdirectory also if the
+         dnl symlink is missing, so we set acl_libdirstem2 too.
+         AC_CACHE_CHECK([for 64-bit host], [gl_cv_solaris_64bit],
+           [AC_COMPILE_IFELSE(
+              [AC_LANG_SOURCE(
+                 [[#ifdef _LP64
+                    int ok;
+                   #else
+                    error fail
+                   #endif
+                 ]])],
+              [gl_cv_solaris_64bit=yes],
+              [gl_cv_solaris_64bit=no])
+           ])
+         if test $gl_cv_solaris_64bit = yes; then
+           acl_libdirstem=lib/64
+           case "$host_cpu" in
+             sparc*)        acl_libdirstem2=lib/sparcv9 ;;
+             i*86 | x86_64) acl_libdirstem2=lib/amd64 ;;
+           esac
+         fi
+         ;;
+       *)
+         dnl If $CC generates code for a 32-bit ABI, the libraries are
+         dnl surely under $prefix/lib, not $prefix/lib64.
+         case "$gl_cv_host_cpu_c_abi" in
+           i386 | arm | armhf | arm64-ilp32 | hppa | ia64-ilp32 | mips | mipsn32 | powerpc | s390 | sparc)
+             ;;
+           *) # x86_64 | arm64 | hppa64 | ia64 | mips64 | powerpc64* | s390x | sparc64 | ...
+             dnl The result is a property of the system. However, non-system
+             dnl compilers sometimes have odd library search paths. Therefore
+             dnl prefer asking /usr/bin/gcc, if available, rather than $CC.
+             searchpath=`(if test -f /usr/bin/gcc \
+                             && LC_ALL=C /usr/bin/gcc -print-search-dirs >/dev/null 2>/dev/null; then \
+                            LC_ALL=C /usr/bin/gcc -print-search-dirs; \
+                          else \
+                            LC_ALL=C $CC -print-search-dirs; \
+                          fi) 2>/dev/null \
+                         | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'`
+             if test -n "$searchpath"; then
+               acl_save_IFS="${IFS= 	}"; IFS=":"
+               for searchdir in $searchpath; do
+                 if test -d "$searchdir"; then
+                   case "$searchdir" in
+                     */lib64/ | */lib64 ) acl_libdirstem=lib64 ;;
+                     */../ | */.. )
+                       # Better ignore directories of this form. They are misleading.
+                       ;;
+                     *) searchdir=`cd "$searchdir" && pwd`
+                        case "$searchdir" in
+                          */lib64 ) acl_libdirstem=lib64 ;;
+                        esac ;;
+                   esac
+                 fi
+               done
+               IFS="$acl_save_IFS"
+             fi
+             ;;
+         esac
+         ;;
+     esac
+     test -n "$acl_libdirstem2" || acl_libdirstem2="$acl_libdirstem"
+     acl_cv_libdirstems="$acl_libdirstem,$acl_libdirstem2"
+    ])
+  # Decompose acl_cv_libdirstems into acl_libdirstem and acl_libdirstem2.
+  acl_libdirstem=`echo "$acl_cv_libdirstems" | sed -e 's/,.*//'`
+  acl_libdirstem2=`echo "$acl_cv_libdirstems" | sed -e '/,/s/.*,//'`
 ])