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| author | Raymond Danks <raymonddanks@gmail.com> | 2011-09-03 21:45:38 -0600 |
|---|---|---|
| committer | Peter Stuge <peter@stuge.se> | 2011-09-24 12:55:26 +0200 |
| commit | 62ff00e13f3fb349bb8ce3065f6915448bfd875e (patch) | |
| tree | d1b7cf70d533cd4d90f0007cda5e3a2be0caf2c5 /util/mkelfImage | |
| parent | 03f82bd787833db4c341a129a3329ea0aead6235 (diff) | |
mkelfImage: Use -fno-stack-protector if supported by gcc
Gcc 4.1 comes with an SSP https://wiki.ubuntu.com/GccSsp
This is disabled to work around '__stack_chk_fail' symbol not found failures
http://www.coreboot.org/FAQ/Obsolete#How_do_I_fix_stack_chk_fail_errors.3F
The presence of -fno-stack-protector is tested for automatically by configure.
Change-Id: I28ef158829f5935f985cfd5a5440733685cf479a
Reported-by: Raymond Danks <raymonddanks@gmail.com>
Signed-off-by: Raymond Danks <raymonddanks@gmail.com>
Reviewed-on: http://review.coreboot.org/112
Tested-by: build bot (Jenkins)
Reviewed-by: Peter Stuge <peter@stuge.se>
Diffstat (limited to 'util/mkelfImage')
| -rwxr-xr-x | util/mkelfImage/configure | 38 | ||||
| -rw-r--r-- | util/mkelfImage/configure.ac | 21 |
2 files changed, 58 insertions, 1 deletions
diff --git a/util/mkelfImage/configure b/util/mkelfImage/configure index b3021deb92..150e5c8810 100755 --- a/util/mkelfImage/configure +++ b/util/mkelfImage/configure @@ -690,6 +690,7 @@ IA64_LD IA64_AS IA64_OBJCOPY HOST_CC +libc_cv_fno_stack_protector HOST_CFLAGS I386_CFLAGS I386_ASFLAGS @@ -4963,6 +4964,40 @@ IA64_LDFLAGS='-static --warn-multiple-gp --warn-common' +{ echo "$as_me:$LINENO: checking for -fno-stack-protector" >&5 +echo $ECHO_N "checking for -fno-stack-protector... $ECHO_C" >&6; } +if test "${libc_cv_fno_stack_protector+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + +cat > conftest.c <<EOF +int foo; +main () { return 0;} +EOF +if { ac_try='$I386_CC -fno-stack-protector + -o conftest conftest.c 1>&5' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; } +then + libc_cv_fno_stack_protector=yes +else + libc_cv_fno_stack_protector=no +fi +rm -f conftest* +fi +{ echo "$as_me:$LINENO: result: $libc_cv_fno_stack_protector" >&5 +echo "${ECHO_T}$libc_cv_fno_stack_protector" >&6; } +if test $libc_cv_fno_stack_protector = yes; then + I386_CFLAGS="$I386_CFLAGS -fno-stack-protector" + IA64_CFLAGS="$IA64_CFLAGS -fno-stack-protector" + +fi + + + @@ -5689,6 +5724,7 @@ IA64_LD!$IA64_LD$ac_delim IA64_AS!$IA64_AS$ac_delim IA64_OBJCOPY!$IA64_OBJCOPY$ac_delim HOST_CC!$HOST_CC$ac_delim +libc_cv_fno_stack_protector!$libc_cv_fno_stack_protector$ac_delim HOST_CFLAGS!$HOST_CFLAGS$ac_delim I386_CFLAGS!$I386_CFLAGS$ac_delim I386_ASFLAGS!$I386_ASFLAGS$ac_delim @@ -5700,7 +5736,7 @@ LIBOBJS!$LIBOBJS$ac_delim LTLIBOBJS!$LTLIBOBJS$ac_delim _ACEOF - if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 86; then + if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 87; then break elif $ac_last_try; then { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5 diff --git a/util/mkelfImage/configure.ac b/util/mkelfImage/configure.ac index 7aebd36e54..a7fc37ecf2 100644 --- a/util/mkelfImage/configure.ac +++ b/util/mkelfImage/configure.ac @@ -186,6 +186,27 @@ IA64_ASFLAGS='-mconstant-gp -mauto-pic' IA64_LDFLAGS='-static --warn-multiple-gp --warn-common' AC_SUBST([HOST_CC]) + +AC_CACHE_CHECK(for -fno-stack-protector, libc_cv_fno_stack_protector, [ +cat > conftest.c <<EOF +int foo; +main () { return 0;} +EOF +if AC_TRY_COMMAND([$I386_CC -fno-stack-protector + -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]) +then + libc_cv_fno_stack_protector=yes +else + libc_cv_fno_stack_protector=no +fi +rm -f conftest*]) +if test $libc_cv_fno_stack_protector = yes; then + I386_CFLAGS="$I386_CFLAGS -fno-stack-protector" + IA64_CFLAGS="$IA64_CFLAGS -fno-stack-protector" + +fi +AC_SUBST(libc_cv_fno_stack_protector) + AC_SUBST([HOST_CFLAGS]) AC_SUBST([I386_CC]) |