1 # ld-as-needed.m4 serial 2
3 # Test if ld supports --as-needed
5 AC_DEFUN([PAM_LD_AS_NEEDED],
7 AC_CACHE_CHECK(whether ld supports --as-needed,
8 pam_cv_ld_as_needed, [ dnl
10 int main (void) { return 0; }
12 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
13 -o conftest.o conftest.c
14 -Wl,--as-needed 1>&AS_MESSAGE_LOG_FD])
16 pam_cv_ld_as_needed=yes
17 LDFLAGS="$LDFLAGS -Wl,--as-needed"
19 pam_cv_ld_as_needed=no
22 AC_SUBST(pam_cv_ld_as_needed)