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authorArnaldo Carvalho de Melo <acme@redhat.com>2011-01-22 19:29:53 -0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-01-22 19:29:53 -0200
commit065bef5af620dcedeb6dc26fdc0b1739a3c9adef (patch)
tree8ee2e93b30bcec3b9aa5bfb1abeb43c17fc9e2f9 /tools
parent5c7a66822c8b619966d9367594054778608fc5d1 (diff)
downloadlinux-2.6.38-lt-ux500-065bef5af620dcedeb6dc26fdc0b1739a3c9adef.tar.gz
perf tools: Fix build by checking if extra warnings are supported
The -Wstack-protector and -Wvolatile-register-var warnings, for instance, are not supported by gcc 3.4.6. So fix by doing the same check we already do for -fstack-protector-all. With this and the other patches in this series, perf builds unmodified on, for instance, RHEL4. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/Makefile9
1 files changed, 7 insertions, 2 deletions
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 2b5387d53ba..7141c42e146 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -204,13 +204,11 @@ EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wshadow
EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Winit-self
EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wpacked
EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wredundant-decls
-EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wstack-protector
EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wstrict-aliasing=3
EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wswitch-default
EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wswitch-enum
EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wno-system-headers
EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wundef
-EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wvolatile-register-var
EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wwrite-strings
EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wbad-function-cast
EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wmissing-declarations
@@ -294,6 +292,13 @@ ifeq ($(call try-cc,$(SOURCE_HELLO),-Werror -fstack-protector-all),y)
CFLAGS := $(CFLAGS) -fstack-protector-all
endif
+ifeq ($(call try-cc,$(SOURCE_HELLO),-Werror -Wstack-protector),y)
+ CFLAGS := $(CFLAGS) -Wstack-protector
+endif
+
+ifeq ($(call try-cc,$(SOURCE_HELLO),-Werror -Wvolatile-register-var),y)
+ CFLAGS := $(CFLAGS) -Wvolatile-register-var
+endif
### --- END CONFIGURATION SECTION ---