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build-sys: Add probing for -fstack-protector

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Add probing for -fstack-protector to the existing
-fstack-protector-strong since not all platforms support either one
of them.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
This commit is contained in:
Stefan Berger 2022-03-02 12:29:59 -05:00 committed by Stefan Berger
parent 1de757972e
commit 3f8fbc831b
1 changed files with 6 additions and 4 deletions
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10
configure.ac
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@ -284,10 +284,12 @@ AC_ARG_ENABLE([hardening],
AS_HELP_STRING([--disable-hardening], [Disable hardening flags]))
if test "x$enable_hardening" != "xno"; then
# Some versions of gcc fail with -Wstack-protector enabled
TMP="$($CC -fstack-protector-strong $srcdir/include/libtpms/tpm_error.h 2>&1)"
if echo $TMP | $GREP 'unrecognized command line option' >/dev/null; then
HARDENING_CFLAGS="-fstack-protector "
# Some versions of gcc fail with -Wstack-protector,
# some with -Wstack-protector-strong enabled
if ! $CC -fstack-protector-strong $srcdir/include/libtpms/tpm_error.h 2>/dev/null; then
if $CC -fstack-protector $srcdir/include/libtpms/tpm_error.h 2>/dev/null; then
HARDENING_CFLAGS="-fstack-protector "
fi
else
HARDENING_CFLAGS="-fstack-protector-strong "
fi