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authorArnaldo Carvalho de Melo <acme@redhat.com>2017-02-14 10:55:27 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2017-02-14 10:55:27 -0300
commit49b3cd306e60b9d889c775cb2ebb709f80dd8ae9 (patch)
tree28b1b251c83d45ca0b3c2df7690fb42b53114958 /tools/lib/subcmd/Makefile
parent093b75ef5995ea35d7f6bdb6c7b32a42a1999813 (diff)
tools: Set the maximum optimization level according to the compiler being used
To avoid this when using clang: warning: optimization level '-O6' is not supported; using '-O3' instead Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-kaghp8ddvzdsg03putemcq96@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib/subcmd/Makefile')
-rw-r--r--tools/lib/subcmd/Makefile8
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/lib/subcmd/Makefile b/tools/lib/subcmd/Makefile
index 3f8cc44a0dbd..3d1c3b5b5150 100644
--- a/tools/lib/subcmd/Makefile
+++ b/tools/lib/subcmd/Makefile
@@ -19,7 +19,13 @@ MAKEFLAGS += --no-print-directory
LIBFILE = $(OUTPUT)libsubcmd.a
CFLAGS := $(EXTRA_WARNINGS) $(EXTRA_CFLAGS)
-CFLAGS += -ggdb3 -Wall -Wextra -std=gnu99 -O6 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fPIC
+CFLAGS += -ggdb3 -Wall -Wextra -std=gnu99 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fPIC
+
+ifeq ($(CC), clang)
+ CFLAGS += -O3
+else
+ CFLAGS += -O6
+endif
# Treat warnings as errors unless directed not to
ifneq ($(WERROR),0)