diff options
| author | Markos Chandras <markos.chandras@imgtec.com> | 2014-02-07 17:15:27 +0000 |
|---|---|---|
| committer | Andrey Konovalov <andrey.konovalov@linaro.org> | 2014-02-17 18:25:22 +0400 |
| commit | f20da497ed770207500d9441f5e8bfbd9500686d (patch) | |
| tree | 7b5a67037dc6c26179d70a11f1e7c4d7e1fdf0da | |
| parent | 3ed4a3fd85d4683334c2d759c7101e3244bc109c (diff) | |
Makefile: Unset stack-protector gcc flag if it is not supported
In case the compiler does not support the stack-protector option,
unset the flag to avoid build failures. Printing a warning is enough
to let the user know that this flag will not be used.
Fixes the following build problem when using a toolchain which does
not support the -fstack-protector-strong flag:
Makefile:614: Cannot use CONFIG_CC_STACKPROTECTOR_STRONG:
-fstack-protector-strong not supported by compiler
mips-linux-gnu-gcc: error: unrecognized command line option
'-fstack-protector-strong'
scripts/Makefile.build:308: recipe for target 'scripts/mod/empty.o' failed
make[2]: *** [scripts/mod/empty.o] Error 1
make[2]: *** Waiting for unfinished jobs....
scripts/Makefile.build:455: recipe for target 'scripts/mod' failed
Cc: Michal Marek <mmarek@suse.cz>
Cc: linux-kbuild@vger.kernel.org
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
| -rw-r--r-- | Makefile | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -607,12 +607,14 @@ ifdef CONFIG_CC_STACKPROTECTOR_REGULAR ifeq ($(call cc-option, $(stackp-flag)),) $(warning Cannot use CONFIG_CC_STACKPROTECTOR: \ -fstack-protector not supported by compiler) + stackp-flag := endif else ifdef CONFIG_CC_STACKPROTECTOR_STRONG stackp-flag := -fstack-protector-strong ifeq ($(call cc-option, $(stackp-flag)),) $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \ -fstack-protector-strong not supported by compiler) + stackp-flag := endif else # Force off for distro compilers that enable stack protector by default. |