tools/perf/build: Split out feature check: 'fortify-source'

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-wicrcLCy2wkalka7iwsuzgpb@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index a3de2f8..7a614f9 100644 (file)
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -106,6 +106,7 @@ FEATURE_TESTS =                             \
        stackprotector-all              \
        stackprotector                  \
        volatile-register-var           \
+       fortify-source                  \
        libnuma
 
 $(foreach test,$(FEATURE_TESTS),$(call feature_check,$(test),$(test)))
@@ -123,7 +124,7 @@ ifeq ($(feature-volatile-register-var), 1)
 endif
 
 ifndef PERF_DEBUG
-  ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -D_FORTIFY_SOURCE=2,-D_FORTIFY_SOURCE=2),y)
+  ifeq ($(feature-fortify-source), 1)
     CFLAGS += -D_FORTIFY_SOURCE=2
   endif
 endif

diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile
index 5693299..529317e 100644 (file)
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -4,6 +4,7 @@ FILES=                                  \
        test-stackprotector-all         \
        test-stackprotector             \
        test-volatile-register-var      \
+       test-fortify-source             \
        test-libnuma
 
 CC := $(CC) -MD
@@ -26,6 +27,9 @@ test-stackprotector:
 test-volatile-register-var:
        $(BUILD) -Werror -Wvolatile-register-var
 
+test-fortify-source:
+       $(BUILD) -O2 -Werror -D_FORTIFY_SOURCE=2
+
 test-libnuma:
        $(BUILD) -lnuma
 

diff --git a/tools/perf/config/feature-checks/test-fortify-source.c b/tools/perf/config/feature-checks/test-fortify-source.c
new file mode 100644 (file)
index 0000000..c9f398d
--- /dev/null
+++ b/tools/perf/config/feature-checks/test-fortify-source.c
@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main(void)
+{
+       return puts("hi");
+}