tools/perf/build: Improve the 'stackprotector' feature test
Namhyung Kim noticed that the stackprotector testcase was incomplete:
> The flag being checked should be -"W"stack-protector instead of
> -"f"stack-protector. And the gcc manpage says that -Wstack-protector is
> only active when -fstack-protector is active. So the end result should
> look like
>
> $(BUILD) -Werror -fstack-protector -Wstack-protector
Add -Wstack-protector.
Reported-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile
index 2eb8346..c70d23e 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -45,7 +45,7 @@
$(BUILD) -Werror -fstack-protector-all
test-stackprotector:
- $(BUILD) -Werror -fstack-protector
+ $(BUILD) -Werror -fstack-protector -Wstack-protector
test-fortify-source:
$(BUILD) -O2 -Werror -D_FORTIFY_SOURCE=2