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# ld-as-needed.m4 serial 2
# 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)
]
)
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