Imported Upstream version 0.9.6+really0.9.3upstream/0.9.6+really0.9.3

1 files changed, 6 insertions, 80 deletions

diff --git a/gnulib-m4/alloca.m4 b/gnulib-m4/alloca.m4
index 8408bed2..f3ee3438 100644
--- a/gnulib-m4/alloca.m4
+++ b/gnulib-m4/alloca.m4
@@ -1,5 +1,5 @@
-# alloca.m4 serial 14
-dnl Copyright (C) 2002-2004, 2006-2007, 2009-2015 Free Software Foundation,
+# alloca.m4 serial 9
+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,
@@ -7,6 +7,10 @@ dnl with or without modifications, as long as this notice is preserved.
 
 AC_DEFUN([gl_FUNC_ALLOCA],
 [
+  dnl Work around a bug of AC_EGREP_CPP in autoconf-2.57.
+  AC_REQUIRE([AC_PROG_CPP])
+  AC_REQUIRE([AC_PROG_EGREP])
+
   AC_REQUIRE([AC_FUNC_ALLOCA])
   if test $ac_cv_func_alloca_works = no; then
     gl_PREREQ_ALLOCA
@@ -36,86 +40,8 @@ AC_DEFUN([gl_FUNC_ALLOCA],
     ALLOCA_H=alloca.h
   fi
   AC_SUBST([ALLOCA_H])
-  AM_CONDITIONAL([GL_GENERATE_ALLOCA_H], [test -n "$ALLOCA_H"])
 ])
 
 # Prerequisites of lib/alloca.c.
 # STACK_DIRECTION is already handled by AC_FUNC_ALLOCA.
 AC_DEFUN([gl_PREREQ_ALLOCA], [:])
-
-# This works around a bug in autoconf <= 2.68.
-# See <http://lists.gnu.org/archive/html/bug-gnulib/2011-06/msg00277.html>.
-
-m4_version_prereq([2.69], [] ,[
-
-# This is taken from the following Autoconf patch:
-# http://git.savannah.gnu.org/cgit/autoconf.git/commit/?id=6cd9f12520b0d6f76d3230d7565feba1ecf29497
-
-# _AC_LIBOBJ_ALLOCA
-# -----------------
-# Set up the LIBOBJ replacement of 'alloca'.  Well, not exactly
-# AC_LIBOBJ since we actually set the output variable 'ALLOCA'.
-# Nevertheless, for Automake, AC_LIBSOURCES it.
-m4_define([_AC_LIBOBJ_ALLOCA],
-[# The SVR3 libPW and SVR4 libucb both contain incompatible functions
-# that cause trouble.  Some versions do not even contain alloca or
-# contain a buggy version.  If you still want to use their alloca,
-# use ar to extract alloca.o from them instead of compiling alloca.c.
-AC_LIBSOURCES(alloca.c)
-AC_SUBST([ALLOCA], [\${LIBOBJDIR}alloca.$ac_objext])dnl
-AC_DEFINE(C_ALLOCA, 1, [Define to 1 if using 'alloca.c'.])
-
-AC_CACHE_CHECK(whether 'alloca.c' needs Cray hooks, ac_cv_os_cray,
-[AC_EGREP_CPP(webecray,
-[#if defined CRAY && ! defined CRAY2
-webecray
-#else
-wenotbecray
-#endif
-], ac_cv_os_cray=yes, ac_cv_os_cray=no)])
-if test $ac_cv_os_cray = yes; then
-  for ac_func in _getb67 GETB67 getb67; do
-    AC_CHECK_FUNC($ac_func,
-                  [AC_DEFINE_UNQUOTED(CRAY_STACKSEG_END, $ac_func,
-                                      [Define to one of '_getb67', 'GETB67',
-                                       'getb67' for Cray-2 and Cray-YMP
-                                       systems. This function is required for
-                                       'alloca.c' support on those systems.])
-    break])
-  done
-fi
-
-AC_CACHE_CHECK([stack direction for C alloca],
-               [ac_cv_c_stack_direction],
-[AC_RUN_IFELSE([AC_LANG_SOURCE(
-[AC_INCLUDES_DEFAULT
-int
-find_stack_direction (int *addr, int depth)
-{
-  int dir, dummy = 0;
-  if (! addr)
-    addr = &dummy;
-  *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
-  dir = depth ? find_stack_direction (addr, depth - 1) : 0;
-  return dir + dummy;
-}
-
-int
-main (int argc, char **argv)
-{
-  return find_stack_direction (0, argc + !argv + 20) < 0;
-}])],
-               [ac_cv_c_stack_direction=1],
-               [ac_cv_c_stack_direction=-1],
-               [ac_cv_c_stack_direction=0])])
-AH_VERBATIM([STACK_DIRECTION],
-[/* If using the C implementation of alloca, define if you know the
-   direction of stack growth for your system; otherwise it will be
-   automatically deduced at runtime.
-        STACK_DIRECTION > 0 => grows toward higher addresses
-        STACK_DIRECTION < 0 => grows toward lower addresses
-        STACK_DIRECTION = 0 => direction of growth unknown */
-@%:@undef STACK_DIRECTION])dnl
-AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction)
-])# _AC_LIBOBJ_ALLOCA
-])