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>
1 file changed