Messages in this thread Patch in this message | | | From | Adrian Hunter <> | Subject | [PATCH 2/5] perf build: Fix libunwind feature detection on 32-bit x86 | Date | Tue, 19 May 2015 16:05:43 +0300 |
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The libunwind feature would never detect because of the following error:
$ cat tools/build/feature/test-libunwind.make.output /usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libunwind-x86.so: undefined reference to `lzma_stream_buffer_decode' /usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libunwind-x86.so: undefined reference to `lzma_index_uncompressed_size' /usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libunwind-x86.so: undefined reference to `lzma_index_end' /usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libunwind-x86.so: undefined reference to `lzma_index_buffer_decode' /usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libunwind-x86.so: undefined reference to `lzma_stream_footer_decode' /usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libunwind-x86.so: undefined reference to `lzma_index_size' collect2: error: ld returned 1 exit status
Fix by adding -llzma and re-ordering to match the dependencies.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> --- tools/perf/config/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index 1b957a1..e3b3724 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -32,7 +32,7 @@ ifeq ($(ARCH),x86) LIBUNWIND_LIBS = -lunwind -lunwind-x86_64 $(call detected,CONFIG_X86_64) else - LIBUNWIND_LIBS = -lunwind -lunwind-x86 + LIBUNWIND_LIBS = -lunwind-x86 -llzma -lunwind endif NO_PERF_REGS := 0 endif -- 1.9.1
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