diff options
| author | Dmitry V. Levin <ldv@altlinux.org> | 2020-08-06 18:00:00 +0000 |
|---|---|---|
| committer | Dmitry V. Levin <ldv@altlinux.org> | 2020-08-07 08:00:00 +0000 |
| commit | cc008e03d4f941a65bbbe2896242166acec09241 (patch) | |
| tree | 2b2c226d3d3aac665cfe3fbbc97d3fa6f264c919 /m4 | |
| parent | 84726f58785a22847cb67c2e009b5be0e207a256 (diff) | |
m4: rewrite ld -O1 check
* m4/ld-O1.m4: Rewrite using AC_LINK_IFELSE to create a more readable
autoconf macro.
Diffstat (limited to 'm4')
| -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"]) +]) |