diff options
| -rw-r--r-- | m4/ld-O1.m4 | 37 |
1 files changed, 14 insertions, 23 deletions
diff --git a/m4/ld-O1.m4 b/m4/ld-O1.m4 index f67b959b..64593280 100644 --- a/m4/ld-O1.m4 +++ b/m4/ld-O1.m4 @@ -1,24 +1,15 @@ -# ld-O1.m4 serial 3 +#!/usr/bin/m4 +dnl Check whether ld supports -O1 -# Test if ld supports -O1 - -AC_DEFUN([PAM_LD_O1], - [ - AC_CACHE_CHECK(whether ld supports -O1, - pam_cv_ld_O1, [ dnl - cat > conftest.c <<EOF -int main (void) { return 0; } -EOF - if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS - -o conftest.o conftest.c - -Wl,-O1 1>&AS_MESSAGE_LOG_FD]) - then - pam_cv_ld_O1=yes - LDFLAGS="$LDFLAGS -Wl,-O1" - else - pam_cv_ld_O1=no - fi - rm -f conftest*]) - AC_SUBST(pam_cv_ld_O1) - ] -) +AC_DEFUN([PAM_LD_O1], [dnl + AC_CACHE_CHECK([whether ld supports -O1], + [pam_cv_ld_O1], + [saved_LDFLAGS="$LDFLAGS" + LDFLAGS="$LDFLAGS -Wl,-O1" + AC_LINK_IFELSE([AC_LANG_PROGRAM(,)], + [pam_cv_ld_O1=yes], + [pam_cv_ld_O1=no]) + LDFLAGS="$saved_LDFLAGS"]) + AS_IF([test $pam_cv_ld_O1 = yes], + [LDFLAGS="$LDFLAGS -Wl,-O1"]) +]) |