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| author | Bobby Powers <bobbypowers@gmail.com> | 2015-04-21 19:19:41 -0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-04-23 17:08:23 -0300 |
| commit | de28c15daf60e9625bece22f13a091fac8d05f1d (patch) | |
| tree | 7f61bdc3af29d836a3d099c598b10fba14ba9218 /tools | |
| parent | 6145c259cd454bcb7a1288f7bbb7b4fbc18175dd (diff) | |
| download | lwn-de28c15daf60e9625bece22f13a091fac8d05f1d.tar.gz lwn-de28c15daf60e9625bece22f13a091fac8d05f1d.zip | |
tools lib api: Undefine _FORTIFY_SOURCE before setting it
Some toolchains (like Hardened Gentoo) define _FORTIFY_SOURCE in the
built-in, default args. This causes perf builds to fail with:
<command-line>:0:0: error: "_FORTIFY_SOURCE" redefined [-Werror]
<built-in>: note: this is the location of the previous definition cc1:
all warnings being treated as errors
To avoid this, undefine _FORTIFY_SOURCE before (possibly re-)defining it
in tools/lib/api.
v2 applies cleanly on top of already pulled kbuild changes for 4.1-rc1.
Signed-off-by: Bobby Powers <bobbypowers@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Dirk Gouders <dirk@gouders.net>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: linux-kbuild@vger.kernel.org
Link: http://lkml.kernel.org/r/1429658381-3039-1-git-send-email-bobbypowers@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/lib/api/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/lib/api/Makefile b/tools/lib/api/Makefile index d8fe29fc19a4..8bd960658463 100644 --- a/tools/lib/api/Makefile +++ b/tools/lib/api/Makefile @@ -16,7 +16,7 @@ MAKEFLAGS += --no-print-directory LIBFILE = $(OUTPUT)libapi.a CFLAGS := $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) -CFLAGS += -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -D_FORTIFY_SOURCE=2 -fPIC +CFLAGS += -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fPIC CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 RM = rm -f |