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>
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Peter Stuge
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03f82bd787
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@@ -186,6 +186,27 @@ IA64_ASFLAGS='-mconstant-gp -mauto-pic'
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IA64_LDFLAGS='-static --warn-multiple-gp --warn-common'
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AC_SUBST([HOST_CC])
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AC_CACHE_CHECK(for -fno-stack-protector, libc_cv_fno_stack_protector, [
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cat > conftest.c <<EOF
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int foo;
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main () { return 0;}
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EOF
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if AC_TRY_COMMAND([$I386_CC -fno-stack-protector
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-o conftest conftest.c 1>&AS_MESSAGE_LOG_FD])
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then
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libc_cv_fno_stack_protector=yes
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else
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libc_cv_fno_stack_protector=no
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fi
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rm -f conftest*])
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if test $libc_cv_fno_stack_protector = yes; then
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I386_CFLAGS="$I386_CFLAGS -fno-stack-protector"
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IA64_CFLAGS="$IA64_CFLAGS -fno-stack-protector"
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fi
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AC_SUBST(libc_cv_fno_stack_protector)
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AC_SUBST([HOST_CFLAGS])
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AC_SUBST([I386_CC])
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