Messages in this thread Patch in this message | | | From | Arnaldo Carvalho de Melo <> | Subject | [PATCH 27/40] perf jvmti: Fix linker error when libelf config is disabled | Date | Wed, 26 Jul 2017 11:17:17 -0300 |
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From: Sudeep Holla <Sudeep.Holla@arm.com>
When libelf is disabled in the configuration, we get the following linker error:
LINK libperf-jvmti.so ld: cannot find -lelf Makefile.perf:515: recipe for target 'libperf-jvmti.so' failed
Jiri pointed out that both librt and libelf are not really required. So this patch fixes the linker error by getting rid of unwanted libraries in the linker stage.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: David Carrillo-Cisneros <davidcc@google.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Elena Reshetova <elena.reshetova@intel.com> Cc: Kees Kook <keescook@chromium.org> Cc: Paul Turner <pjt@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Wang Nan <wangnan0@huawei.com> Fixes: 209045adc2bb ("perf tools: add JVMTI agent library") Link: http://lkml.kernel.org/r/20170719011839.99399-5-davidcc@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/Makefile.perf | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 100a6c1670c8..d66f90e6be5c 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -518,7 +518,7 @@ $(LIBJVMTI_IN): FORCE $(Q)$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=jvmti obj=jvmti $(OUTPUT)$(LIBJVMTI): $(LIBJVMTI_IN) - $(QUIET_LINK)$(CC) -shared -Wl,-soname -Wl,$(LIBJVMTI) -o $@ $< -lelf -lrt + $(QUIET_LINK)$(CC) -shared -Wl,-soname -Wl,$(LIBJVMTI) -o $@ $< endif $(patsubst perf-%,%.o,$(PROGRAMS)): $(wildcard */*.h) -- 2.9.4
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