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>
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@ -1448,7 +1448,10 @@ done
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if test "$stack_protector" != "no" ; then
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gcc_flags="-fstack-protector-strong -fstack-protector-all"
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for flag in $gcc_flags; do
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if do_cc $QEMU_CFLAGS -Werror $flag -c -o $TMPO $TMPC ; then
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# We need to check both a compile and a link, since some compiler
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# setups fail only on a .c->.o compile and some only at link time
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if do_cc $QEMU_CFLAGS -Werror $flag -c -o $TMPO $TMPC &&
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compile_prog "-Werror $flag" ""; then
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QEMU_CFLAGS="$QEMU_CFLAGS $flag"
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LIBTOOLFLAGS="$LIBTOOLFLAGS -Wc,$flag"
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break
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