tools: perf: Fix linker error when libelf config is disabled
PATCH 4/4 tools: perf: Fix linker error when libelf config is disabled
From: Sudeep Holla <[email protected]>
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 <[email protected]>
Cc Peter Zijlstra <[email protected]>
Cc Ingo Molnar <[email protected]>
Cc Stephane Eranian <[email protected]>
Signed-off-by Sudeep Holla <[email protected]>
--- tools/perf/Makefile.perf | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
tools/perf/Makefile.perf +1 -1
@@ -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)
Signature · 1 line
2.13.2.932.g7449e964c-goog