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authorJiri Olsa <jolsa@kernel.org>2016-01-15 04:00:18 +0000
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-01-15 16:32:00 -0300
commit96b9e70b8e6cd65f71ee71889143976f3afb038a (patch)
tree6b3f6243f3c79ad2d220dbb9fa82f0021fa41ba5 /crypto
parentb8e52be00ca7e7659e8ee172ce9e6f0c6af28ec8 (diff)
downloadlinux-96b9e70b8e6cd65f71ee71889143976f3afb038a.tar.bz2
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 'crypto')
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