11# ===========================================================================
2- # http ://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
2+ # https ://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
33# ===========================================================================
44#
55# SYNOPSIS
2929# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
3030# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
3131#
32- # This program is free software: you can redistribute it and/or modify it
33- # under the terms of the GNU General Public License as published by the
34- # Free Software Foundation, either version 3 of the License, or (at your
35- # option) any later version.
36- #
37- # This program is distributed in the hope that it will be useful, but
38- # WITHOUT ANY WARRANTY; without even the implied warranty of
39- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
40- # Public License for more details.
41- #
42- # You should have received a copy of the GNU General Public License along
43- # with this program. If not, see <http://www.gnu.org/licenses/>.
44- #
45- # As a special exception, the respective Autoconf Macro's copyright owner
46- # gives unlimited permission to copy, distribute and modify the configure
47- # scripts that are the output of Autoconf when processing the Macro. You
48- # need not follow the terms of the GNU General Public License when using
49- # or distributing such scripts, even though portions of the text of the
50- # Macro appear in them. The GNU General Public License (GPL) does govern
51- # all other use of the material that constitutes the Autoconf Macro.
52- #
53- # This special exception to the GPL applies to versions of the Autoconf
54- # Macro released by the Autoconf Archive. When you make and distribute a
55- # modified version of the Autoconf Macro, you may extend this special
56- # exception to the GPL to apply to your modified version as well.
32+ # Copying and distribution of this file, with or without modification, are
33+ # permitted in any medium without royalty provided the copyright notice
34+ # and this notice are preserved. This file is offered as-is, without any
35+ # warranty.
5736
58- # serial3
37+ # serial6
5938
6039AC_DEFUN ( [ AX_CHECK_COMPILE_FLAG ]
61- [ AC_PREREQ ( 2.59 ) dnl for _AC_LANG_PREFIX
40+ [ AC_PREREQ ( 2.64 ) dnl for _AC_LANG_PREFIX and AS_VAR_IF
6241AS_VAR_PUSHDEF ( [ CACHEVAR] [ ax_cv_check_[ ] [ ] $4 _$1 ] ) dnl
6342AC_CACHE_CHECK ( [ whether _AC_LANG compiler accepts$1 ] CACHEVAR ,[
6443 ax_check_save_flags=$[ ] [ ]
@@ -67,7 +46,7 @@ AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
6746[ AS_VAR_SET ( CACHEVAR ,[ yes] ) ]
6847[ AS_VAR_SET ( CACHEVAR ,[ no] ) ] )
6948 _AC_LANG_PREFIX[ ] ] )
70- AS_IF ( [ test x"AS_VAR_GET( CACHEVAR)" = xyes ]
49+ AS_VAR_IF ( CACHEVAR , yes ,
7150[ m4_default ( [ $2 ] : ) ]
7251[ m4_default ( [ $3 ] : ) ] )
7352AS_VAR_POPDEF ( [ CACHEVAR] ) dnl