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Alexey Budankov 3b1c5d9659 tools build: Implement libzstd feature check, LIBZSTD_DIR and NO_LIBZSTD defines
Implement libzstd feature check, NO_LIBZSTD and LIBZSTD_DIR defines to
override Zstd library sources or disable the feature from the command
line:

  $ make -C tools/perf LIBZSTD_DIR=/path/to/zstd/sources/ clean all
  $ make -C tools/perf NO_LIBZSTD=1 clean all

Auto detection feature status is reported just before compilation
starts.  If your system has some version of the zstd library
preinstalled then the build system finds and uses it during the build.

If you still prefer to compile with some other version of zstd library
you have capability to refer the compilation to that version using
LIBZSTD_DIR define.

Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/9b4cd8b0-10a3-1f1e-8d6b-5922a7ca216b@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-04-01 15:18:10 -03:00
..
Documentation tools build: Add CFLAGS_REMOVE_* support 2016-11-14 11:37:25 -03:00
feature tools build: Implement libzstd feature check, LIBZSTD_DIR and NO_LIBZSTD defines 2019-04-01 15:18:10 -03:00
tests License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
.gitignore perf build: Add fixdep to .gitignore 2015-10-20 10:43:28 -03:00
Build tools build: Make fixdep a hostprog 2016-10-03 11:40:35 -03:00
Build.include kbuild: Rename HOSTCFLAGS to KBUILD_HOSTCFLAGS 2018-07-18 01:18:05 +09:00
Makefile kbuild: Rename HOSTLDFLAGS to KBUILD_HOSTLDFLAGS 2018-07-18 01:18:05 +09:00
Makefile.build License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile.feature tools build: Implement libzstd feature check, LIBZSTD_DIR and NO_LIBZSTD defines 2019-04-01 15:18:10 -03:00
Makefile.include perf build: Add special fixdep cleaning rule 2017-02-17 16:04:38 -03:00
fixdep.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00