Messages in this thread Patch in this message | | | From | David Carrillo-Cisneros <> | Subject | [PATCH 4/4] tools: perf: Fix linker error when libelf config is disabled | Date | Tue, 18 Jul 2017 18:18:39 -0700 |
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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.
Fixes: 209045adc2bb ("perf tools: add JVMTI agent library") Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Stephane Eranian <eranian@google.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: David Carrillo-Cisneros <davidcc@google.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) -- 2.13.2.932.g7449e964c-goog
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