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| author | Stanislav Fomichev <sdf@google.com> | 2018-11-15 16:32:01 -0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-12-21 09:42:46 -0300 |
| commit | 14541b1e7e723859ff2c75c6fc10cdbbec6b8c34 (patch) | |
| tree | 31d881b0ea5ee36a68a161087fb9bd6c6019f330 /tools/build/feature | |
| parent | 5ce29d522e9b8cdc158329a8539bcd6206fc5bf4 (diff) | |
| download | linux-14541b1e7e723859ff2c75c6fc10cdbbec6b8c34.tar.bz2 | |
perf build: Don't unconditionally link the libbfd feature test to -liberty and -lz
Current libbfd feature test unconditionally links against -liberty and -lz.
While it's required on some systems (e.g. opensuse), it's completely
unnecessary on the others, where only -lbdf is sufficient (debian).
This patch streamlines (and renames) the following feature checks:
feature-libbfd - only link against -lbfd (debian),
see commit 2cf9040714f3 ("perf tools: Fix bfd
dependency libraries detection")
feature-libbfd-liberty - link against -lbfd and -liberty
feature-libbfd-liberty-z - link against -lbfd, -liberty and -lz (opensuse),
see commit 280e7c48c3b8 ("perf tools: fix BFD
detection on opensuse")
(feature-liberty{,-z} were renamed to feature-libbfd-liberty{,z}
for clarity)
The main motivation is to fix this feature test for bpftool which is
currently broken on debian (libbfd feature shows OFF, but we still
unconditionally link against -lbfd and it works).
Tested on debian with only -lbfd installed (without -liberty); I'd
appreciate if somebody on the other systems can test this new detection
method.
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/4dfc634cfcfb236883971b5107cf3c28ec8a31be.1542328222.git.sdf@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/build/feature')
| -rw-r--r-- | tools/build/feature/Makefile | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index 2dbcc0d00f52..7ceb4441b627 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -17,8 +17,8 @@ FILES= \ test-libbfd.bin \ test-disassembler-four-args.bin \ test-reallocarray.bin \ - test-liberty.bin \ - test-liberty-z.bin \ + test-libbfd-liberty.bin \ + test-libbfd-liberty-z.bin \ test-cplus-demangle.bin \ test-libelf.bin \ test-libelf-getphdrnum.bin \ @@ -210,7 +210,7 @@ $(OUTPUT)test-libpython-version.bin: $(BUILD) $(OUTPUT)test-libbfd.bin: - $(BUILD) -DPACKAGE='"perf"' -lbfd -lz -liberty -ldl + $(BUILD) -DPACKAGE='"perf"' -lbfd -ldl $(OUTPUT)test-disassembler-four-args.bin: $(BUILD) -DPACKAGE='"perf"' -lbfd -lopcodes @@ -218,10 +218,10 @@ $(OUTPUT)test-disassembler-four-args.bin: $(OUTPUT)test-reallocarray.bin: $(BUILD) -$(OUTPUT)test-liberty.bin: +$(OUTPUT)test-libbfd-liberty.bin: $(CC) $(CFLAGS) -Wall -Werror -o $@ test-libbfd.c -DPACKAGE='"perf"' $(LDFLAGS) -lbfd -ldl -liberty -$(OUTPUT)test-liberty-z.bin: +$(OUTPUT)test-libbfd-liberty-z.bin: $(CC) $(CFLAGS) -Wall -Werror -o $@ test-libbfd.c -DPACKAGE='"perf"' $(LDFLAGS) -lbfd -ldl -liberty -lz $(OUTPUT)test-cplus-demangle.bin: |