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| 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 | f37b990d1cf7d888078c7f8fa283966e31c04b88 (patch) | |
| tree | c2131ec9ecf1ce6231b49e5077cfba5b72a80506 /m4 | |
| parent | cc008e03d4f941a65bbbe2896242166acec09241 (diff) | |
| download | linux-pam-git-f37b990d1cf7d888078c7f8fa283966e31c04b88.tar.gz | |
m4: rewrite ld --as-needed check
* m4/ld-as-needed.m4: Rewrite using AC_LINK_IFELSE to create a more readable
autoconf macro.
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/ld-as-needed.m4 | 37 |
1 files changed, 14 insertions, 23 deletions
diff --git a/m4/ld-as-needed.m4 b/m4/ld-as-needed.m4 index 5ba6e0f9..d6590192 100644 --- a/m4/ld-as-needed.m4 +++ b/m4/ld-as-needed.m4 @@ -1,24 +1,15 @@ -# ld-as-needed.m4 serial 2 +#!/usr/bin/m4 +dnl Check whether ld supports --as-needed -# Test if ld supports --as-needed - -AC_DEFUN([PAM_LD_AS_NEEDED], - [ - AC_CACHE_CHECK(whether ld supports --as-needed, - pam_cv_ld_as_needed, [ dnl - cat > conftest.c <<EOF -int main (void) { return 0; } -EOF - if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS - -o conftest.o conftest.c - -Wl,--as-needed 1>&AS_MESSAGE_LOG_FD]) - then - pam_cv_ld_as_needed=yes - LDFLAGS="$LDFLAGS -Wl,--as-needed" - else - pam_cv_ld_as_needed=no - fi - rm -f conftest*]) - AC_SUBST(pam_cv_ld_as_needed) - ] -) +AC_DEFUN([PAM_LD_AS_NEEDED], [dnl + AC_CACHE_CHECK([whether ld supports --as-needed], + [pam_cv_ld_as_needed], + [saved_LDFLAGS="$LDFLAGS" + LDFLAGS="$LDFLAGS -Wl,--as-needed" + AC_LINK_IFELSE([AC_LANG_PROGRAM(,)], + [pam_cv_ld_as_needed=yes], + [pam_cv_ld_as_needed=no]) + LDFLAGS="$saved_LDFLAGS"]) + AS_IF([test $pam_cv_ld_as_needed = yes], + [LDFLAGS="$LDFLAGS -Wl,--as-needed"]) +]) |