From 5d7bdab75cd56d2bdc0986ae5546be3b09fea70a Mon Sep 17 00:00:00 2001 From: Michael Cree Date: Wed, 11 Nov 2009 20:43:03 +1300 Subject: perf tools: Test -fstack-protector-all compiler option for inclusion in CFLAGS Some architectures (e.g. Alpha) do not support the -fstack-protector-all compiler option and the use of the option with -Werror causes the compiler to abort and the build fails. Test that the compiler supports -fstack-protector-all before inclusion in CFLAGS. Signed-off-by: Michael Cree Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Peter Zijlstra Cc: Paul Mackerras LKML-Reference: <20091111074302.GA3728@omega> Signed-off-by: Ingo Molnar --- tools/perf/Makefile | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tools/perf/Makefile b/tools/perf/Makefile index b9509b1..e6d4272 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -207,7 +207,7 @@ ifndef PERF_DEBUG CFLAGS_OPTIMIZE = -O6 endif -CFLAGS = $(MBITS) -ggdb3 -Wall -Wextra -std=gnu99 -Werror $(CFLAGS_OPTIMIZE) -fstack-protector-all -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) +CFLAGS = $(MBITS) -ggdb3 -Wall -Wextra -std=gnu99 -Werror $(CFLAGS_OPTIMIZE) -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) LDFLAGS = -lpthread -lrt -lelf -lm ALL_CFLAGS = $(CFLAGS) ALL_LDFLAGS = $(LDFLAGS) @@ -259,6 +259,9 @@ PTHREAD_LIBS = -lpthread # explicitly what architecture to check for. Fix this up for yours.. SPARSE_FLAGS = -D__BIG_ENDIAN__ -D__powerpc__ +ifeq ($(shell sh -c "echo 'int foo(void) {char X[2]; return 3;}' | $(CC) -x c -c -Werror -fstack-protector-all - -o /dev/null >/dev/null 2>&1 && echo y"), y) + CFLAGS := $(CFLAGS) -fstack-protector-all +endif ### --- END CONFIGURATION SECTION --- -- cgit v1.1