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| author | Wang Nan <wangnan0@huawei.com> | 2015-11-24 14:36:07 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-11-25 20:38:13 +0100 |
| commit | d8ad6a15cc3a364de6c8010378adc3fb06ce3ff1 (patch) | |
| tree | b083198754d81e19710bb7a3a0c5f5ef77f2aeae /tools/lib/bpf | |
| parent | tools build: Clean CFLAGS and LDFLAGS for fixdep (diff) | |
| download | linux-d8ad6a15cc3a364de6c8010378adc3fb06ce3ff1.tar.xz linux-d8ad6a15cc3a364de6c8010378adc3fb06ce3ff1.zip | |
tools lib bpf: Don't do a feature check when cleaning
Before this patch libbpf always do feature check even when cleaning.
For example:
$ cd kernel/tools/lib/bpf
$ make
Auto-detecting system features:
... libelf: [ on ]
... bpf: [ on ]
CC libbpf.o
CC bpf.o
LD libbpf-in.o
LINK libbpf.a
LINK libbpf.so
$ make clean
CLEAN libbpf
CLEAN core-gen
$ make clean
Auto-detecting system features:
... libelf: [ on ]
... bpf: [ on ]
CLEAN libbpf
CLEAN core-gen
$
Although the first 'make clean' doesn't show feature check result, it
still does the check. No output because check result is similar to
FEATURE-DUMP.libbpf.
This patch uses same method as perf to turn off feature checking when
'make clean'.
Reported-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1448372181-151723-3-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib/bpf')
| -rw-r--r-- | tools/lib/bpf/Makefile | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile index a3caaf3eafbd..636e3ddb93a1 100644 --- a/tools/lib/bpf/Makefile +++ b/tools/lib/bpf/Makefile @@ -71,7 +71,17 @@ FEATURE_DISPLAY = libelf bpf INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/arch/$(ARCH)/include/uapi -I$(srctree)/include/uapi FEATURE_CHECK_CFLAGS-bpf = $(INCLUDES) +check_feat := 1 +NON_CHECK_FEAT_TARGETS := clean TAGS tags cscope help +ifdef MAKECMDGOALS +ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),) + check_feat := 0 +endif +endif + +ifeq ($(check_feat),1) include $(srctree)/tools/build/Makefile.feature +endif export prefix libdir src obj |