# HG changeset patch # User Bruno Haible # Date 1232885841 -3600 # Node ID b9fea7c408e9085d31f925c3ce6b3a1260c1a7a7 # Parent 96a37da9a3e275c97b6b03d138e9b693b1067ed9 Make it possible again to use AC_GNU_SOURCE together with gnulib. diff --git a/ChangeLog b/ChangeLog --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2009-01-25 Bruno Haible + + Make it possible again to use AC_GNU_SOURCE together with gnulib. + * m4/extensions.m4 (gl_USE_SYSTEM_EXTENSIONS): Require AC_GNU_SOURCE + before requiring AC_USE_SYSTEM_EXTENSIONS. + 2009-01-25 Jim Meyering c-strtod: avoid warnings diff --git a/m4/extensions.m4 b/m4/extensions.m4 --- a/m4/extensions.m4 +++ b/m4/extensions.m4 @@ -1,7 +1,7 @@ -# serial 6 -*- Autoconf -*- +# serial 7 -*- Autoconf -*- # Enable extensions on systems that normally disable them. -# Copyright (C) 2003, 2006-2008 Free Software Foundation, Inc. +# Copyright (C) 2003, 2006-2009 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. @@ -91,4 +91,14 @@ # Enable extensions on systems that normally disable them, # typically due to standards-conformance issues. AC_DEFUN([gl_USE_SYSTEM_EXTENSIONS], - [AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])]) +[ + dnl Require this macro before AC_USE_SYSTEM_EXTENSIONS. + dnl gnulib does not need it. But if it gets required by third-party macros + dnl after AC_USE_SYSTEM_EXTENSIONS is required, autoconf 2.62..2.63 emit a + dnl warning: "AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS". + dnl Note: We can do this only for one of the macros AC_AIX, AC_GNU_SOURCE, + dnl AC_MINIX. If people still use AC_AIX or AC_MINIX, they are out of luck. + AC_REQUIRE([AC_GNU_SOURCE]) + + AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) +])