From: Peter Maydell <peter.maydell@linaro.org>
Date: Wed, 9 Apr 2014 11:04:47 +0000 (+0100)
Subject: configure: use do_cc when checking for -fstack-protector support
X-Git-Tag: qemu-xen-4.5.0-rc1~37
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=0a9077ea144a7e6a6f456b94e2d2eaad21e74d34;p=qemu-upstream-4.5-testing.git

configure: use do_cc when checking for -fstack-protector support

MacOSX clang silently swallows unrecognized -f options when doing a link
with '-framework' also on the command line, so to detect support for
the various -fstack-protector options we must do a plain .c to .o compile,
not a complete compile-and-link.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 1397041487-28477-1-git-send-email-peter.maydell@linaro.org
---

diff --git a/configure b/configure
index eb0e7bbce..c85475fb8 100755
--- a/configure
+++ b/configure
@@ -1448,7 +1448,7 @@ done
 if test "$stack_protector" != "no" ; then
   gcc_flags="-fstack-protector-strong -fstack-protector-all"
   for flag in $gcc_flags; do
-    if compile_prog "-Werror $flag" "" ; then
+    if do_cc $QEMU_CFLAGS -Werror $flag -c -o $TMPO $TMPC ; then
       QEMU_CFLAGS="$QEMU_CFLAGS $flag"
       LIBTOOLFLAGS="$LIBTOOLFLAGS -Wc,$flag"
       break