diff options
Diffstat (limited to 'aclocal.m4')
| -rw-r--r-- | aclocal.m4 | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/aclocal.m4 b/aclocal.m4 index 7d116c77..6d9da018 100644 --- a/aclocal.m4 +++ b/aclocal.m4 @@ -1,4 +1,4 @@ -dnl $LynxId: aclocal.m4,v 1.236 2017/05/10 22:32:05 tom Exp $ +dnl $LynxId: aclocal.m4,v 1.237 2017/07/02 18:31:56 tom Exp $ dnl Macros for auto-configure script. dnl by Thomas E. Dickey <dickey@invisible-island.net> dnl and Jim Spath <jspath@mail.bcpl.lib.md.us> @@ -4686,6 +4686,37 @@ CF_ACVERSION_CHECK(2.52, CF_CC_ENV_FLAGS ])dnl dnl --------------------------------------------------------------------------- +dnl CF_PROG_CPP_COMMENTS version: 1 updated: 2017/07/02 14:31:07 +dnl -------------------- +dnl Ask for preprocessor "-C" option if we can get it. +AC_DEFUN([CF_PROG_CPP_COMMENTS],[ +AC_REQUIRE([AC_PROG_CPP]) +AC_MSG_CHECKING(if preprocessor -C option works) +AC_CACHE_VAL(cf_cv_prog_cpp_comments,[ +cf_cv_prog_cpp_comments=no +cat >conftest.c <<CF_EOF +int main(void) +{ + /* COMMENT */ + return 0; +} +CF_EOF +if ( $CPP -C conftest.c >conftest.i 2>/dev/null ) +then + if ( grep COMMENT conftest.i >/dev/null 2>/dev/null ) + then + cf_cv_prog_cpp_comments=yes + fi +fi +rm -f conftest.[[ci]] +]) +AC_MSG_RESULT($cf_cv_prog_cpp_comments) +if test x$cf_cv_prog_cpp_comments = xyes +then + CPP="$CPP -C" +fi +])dnl +dnl --------------------------------------------------------------------------- dnl CF_PROG_EXT version: 13 updated: 2015/04/18 09:03:58 dnl ----------- dnl Compute $PROG_EXT, used for non-Unix ports, such as OS/2 EMX. |