diff options
| author | Markos Chandras <markos.chandras@imgtec.com> | 2014-02-07 17:15:27 +0000 |
|---|---|---|
| committer | Andrey Konovalov <andrey.konovalov@linaro.org> | 2014-11-04 13:48:27 +0300 |
| commit | 5ff7a27fe1511b044c194603c94d030ec261b2a9 (patch) | |
| tree | 8df8c188465f5450fe48d36faf7a4ee7a61c45a9 | |
| parent | 72271c21a4bc12d87b0c484daedac64f4a8e84f6 (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
@@ -655,6 +655,7 @@ ifdef CONFIG_CC_STACKPROTECTOR_REGULAR ifeq ($(call cc-option, $(stackp-flag)),) $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \ -fstack-protector not supported by compiler) + stackp-flag := endif else ifdef CONFIG_CC_STACKPROTECTOR_STRONG @@ -662,6 +663,7 @@ ifdef CONFIG_CC_STACKPROTECTOR_STRONG ifeq ($(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. |