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| author | Jiri Olsa <jolsa@kernel.org> | 2016-01-15 07:00:18 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-01-15 22:32:00 +0300 |
| commit | 96b9e70b8e6cd65f71ee71889143976f3afb038a (patch) | |
| tree | 6b3f6243f3c79ad2d220dbb9fa82f0021fa41ba5 /tools/perf/config | |
| parent | b8e52be00ca7e7659e8ee172ce9e6f0c6af28ec8 (diff) | |
| download | linux-96b9e70b8e6cd65f71ee71889143976f3afb038a.tar.xz | |
perf build: Introduce FEATURES_DUMP make variable
Introducing FEATURES_DUMP make variable to provide features
detection dump file and bypass the feature detection.
The intention is to use this during build tests to skip
repeated features detection, like:
Get feature dump static build into /tmp/fd file:
$ make feature-dump FEATURE_DUMP_COPY=/tmp/fd LDFLAGS=-static
BUILD: Doing 'make -j4' parallel build
Auto-detecting system features:
... dwarf: [ OFF ]
SNIP
FEATURE-DUMP file copied into /tmp/fd
Use /tmp/fd to build perf:
$ make FEATURES_DUMP=/tmp/fd LDFLAGS=-static
$ file perf
perf: ELF 64-bit LSB executable, x86-64, version 1 (GNU/Linux), statically linked, for ...
Suggested-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1452830421-77757-7-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/config')
| -rw-r--r-- | tools/perf/config/Makefile | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index e5959c136a19..511141b102e8 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -181,7 +181,11 @@ LDFLAGS += -Wl,-z,noexecstack EXTLIBS = -lpthread -lrt -lm -ldl +ifeq ($(FEATURES_DUMP),) include $(srctree)/tools/build/Makefile.feature +else +include $(FEATURES_DUMP) +endif ifeq ($(feature-stackprotector-all), 1) CFLAGS += -fstack-protector-all |