configure: Make stack-protector test check both compile and link
Since we use the -fstack-protector argument at both compile and
link time in the build, we must check that it works with both
a compile and a link:
* MacOSX only fails in the compile step, not linking
* some gcc cross environments only fail at the link stage (if they
require a libssp and it's not present for some reason)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1397232832-32301-1-git-send-email-peter.maydell@linaro.org
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
diff --git a/configure b/configure
index c85475f..69b9f56 100755
--- a/configure
+++ b/configure
@@ -1448,7 +1448,10 @@
if test "$stack_protector" != "no" ; then
gcc_flags="-fstack-protector-strong -fstack-protector-all"
for flag in $gcc_flags; do
- if do_cc $QEMU_CFLAGS -Werror $flag -c -o $TMPO $TMPC ; then
+ # We need to check both a compile and a link, since some compiler
+ # setups fail only on a .c->.o compile and some only at link time
+ if do_cc $QEMU_CFLAGS -Werror $flag -c -o $TMPO $TMPC &&
+ compile_prog "-Werror $flag" ""; then
QEMU_CFLAGS="$QEMU_CFLAGS $flag"
LIBTOOLFLAGS="$LIBTOOLFLAGS -Wc,$flag"
break
