From 5d90faf45427dd76fadbe7a4dc4fce3b6f87b550 Mon Sep 17 00:00:00 2001 From: Sudeep Holla Date: Tue, 18 Jul 2017 18:18:39 -0700 Subject: [PATCH] perf jvmti: Fix linker error when libelf config is disabled 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 Acked-by: David Carrillo-Cisneros Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Elena Reshetova Cc: Kees Kook Cc: Paul Turner Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Sudeep Holla Cc: Wang Nan 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 --- 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) -- 2.30.2