From 90ac5422b617fcab0c6f02249502ffc17dfbf6e3 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@kernel.org>
Date: Mon, 30 Sep 2013 13:48:44 +0200
Subject: [PATCH] tools/perf/build: Split out feature check:
 'stackprotector-all'

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-gupddm9clctVYws3lyexfdhg@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 tools/perf/config/Makefile                                 | 3 ++-
 tools/perf/config/feature-checks/Makefile                  | 4 ++++
 tools/perf/config/feature-checks/test-stackprotector-all.c | 6 ++++++
 3 files changed, 12 insertions(+), 1 deletion(-)
 create mode 100644 tools/perf/config/feature-checks/test-stackprotector-all.c

diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index f39fc224b52e..1a6737144149 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -103,11 +103,12 @@ $(info done)
 
 FEATURE_TESTS =				\
 	hello				\
+	stackprotector-all		\
 	libnuma
 
 $(foreach test,$(FEATURE_TESTS),$(call feature_check,$(test),$(test)))
 
-ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -Werror -fstack-protector-all,-fstack-protector-all),y)
+ifeq ($(feature-stackprotector-all), 1)
   CFLAGS += -fstack-protector-all
 endif
 
diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile
index 6a42ad24d64f..7538c148b40c 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -1,6 +1,7 @@
 
 FILES=					\
 	test-hello			\
+	test-stackprotector-all		\
 	test-libnuma
 
 CC := $(CC) -MD
@@ -14,6 +15,9 @@ BUILD = $(CC) -o $(OUTPUT)$@ $@.c
 test-hello:
 	$(BUILD)
 
+test-stackprotector-all:
+	$(BUILD) -Werror -fstack-protector-all
+
 test-libnuma:
 	$(BUILD) -lnuma
 
diff --git a/tools/perf/config/feature-checks/test-stackprotector-all.c b/tools/perf/config/feature-checks/test-stackprotector-all.c
new file mode 100644
index 000000000000..c9f398d87868
--- /dev/null
+++ b/tools/perf/config/feature-checks/test-stackprotector-all.c
@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main(void)
+{
+	return puts("hi");
+}