diff options
| author | Vinson Lee <[email protected]> | 2017-08-31 15:38:57 -0700 |
|---|---|---|
| committer | Vinson Lee <[email protected]> | 2017-09-01 16:30:40 -0700 |
| commit | 39a69f0692722e05a221b1db4cfd8100f2f20684 (patch) | |
| tree | e59a708613cae4624d40fa5b8fc1abc440fd9556 /m4 | |
| parent | 01f29366e3c764c6f5cf8721233280bec52a775e (diff) | |
m4: Use older autoconf 2.63 compatible ax_check_compile_flag.
CentOS 6 and RHEL 6 have autoconf 2.63.
Fixes: e4b2b69e828c ("configure: Add and use AX_CHECK_COMPILE_FLAG")
Signed-off-by: Vinson Lee <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/ax_check_compile_flag.m4 | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/m4/ax_check_compile_flag.m4 b/m4/ax_check_compile_flag.m4 index dcabb92a141..51df0c09a7a 100644 --- a/m4/ax_check_compile_flag.m4 +++ b/m4/ax_check_compile_flag.m4 @@ -1,5 +1,5 @@ # =========================================================================== -# https://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html +# http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html # =========================================================================== # # SYNOPSIS @@ -40,7 +40,7 @@ # Public License for more details. # # You should have received a copy of the GNU General Public License along -# with this program. If not, see <https://www.gnu.org/licenses/>. +# with this program. If not, see <http://www.gnu.org/licenses/>. # # As a special exception, the respective Autoconf Macro's copyright owner # gives unlimited permission to copy, distribute and modify the configure @@ -55,10 +55,10 @@ # modified version of the Autoconf Macro, you may extend this special # exception to the GPL to apply to your modified version as well. -#serial 5 +#serial 3 AC_DEFUN([AX_CHECK_COMPILE_FLAG], -[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF +[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [ ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS @@ -67,7 +67,7 @@ AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [ [AS_VAR_SET(CACHEVAR,[yes])], [AS_VAR_SET(CACHEVAR,[no])]) _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags]) -AS_VAR_IF(CACHEVAR,yes, +AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes], [m4_default([$2], :)], [m4_default([$3], :)]) AS_VAR_POPDEF([CACHEVAR])dnl |