* m4/std-gnu11.m4 (AC_PROG_CC, AC_PROG_CXX): Use _AC_DO as fallback
when _AC_DO_LIMIT does not exist.
+2018-10-22 Bruno Haible <bruno@clisp.org>
+
+ std-gnu11: Support Autoconf versions < 2.64.
+ * m4/std-gnu11.m4 (AC_PROG_CC, AC_PROG_CXX): Use _AC_DO as fallback
+ when _AC_DO_LIMIT does not exist.
+
2018-10-22 Bruno Haible <bruno@clisp.org>
Assume Autoconf >= 2.63.
set X $ac_compile
ac_compiler=$[2]
for ac_option in --version -v -V -qversion -version; do
- _AC_DO_LIMIT([$ac_compiler $ac_option >&AS_MESSAGE_LOG_FD])
+ m4_ifdef([_AC_DO_LIMIT],[_AC_DO_LIMIT],[_AC_DO])([$ac_compiler $ac_option >&AS_MESSAGE_LOG_FD])
done
m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl
set X $ac_compile
ac_compiler=$[2]
for ac_option in --version -v -V -qversion; do
- _AC_DO_LIMIT([$ac_compiler $ac_option >&AS_MESSAGE_LOG_FD])
+ m4_ifdef([_AC_DO_LIMIT],[_AC_DO_LIMIT],[_AC_DO])([$ac_compiler $ac_option >&AS_MESSAGE_LOG_FD])
done
m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl