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| author | Andreas Rottmann <a.rottmann@gmx.at> | 2010-05-27 18:23:17 +0200 |
|---|---|---|
| committer | Andreas Rottmann <a.rottmann@gmx.at> | 2010-05-27 18:23:17 +0200 |
| commit | bd6adfa17d453e4c486e36fed4c5779db90a8a0e (patch) | |
| tree | 9798677560d5f99061afe9f0db105a8c97f2438a /gnulib-m4/extensions.m4 | |
| parent | 79ca645d222db2e158784642c3b464a47bea26f3 (diff) | |
| parent | 3e0814cd9862b89c7a39672672937477bd87ddfb (diff) | |
Merge commit 'upstream/0.9.3'
Diffstat (limited to 'gnulib-m4/extensions.m4')
| -rw-r--r-- | gnulib-m4/extensions.m4 | 22 |
1 files changed, 18 insertions, 4 deletions
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 && |