lkml.org 
[lkml]   [2017]   [Jul]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 27/40] perf jvmti: Fix linker error when libelf config is disabled
    Date
    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
    \
     
     \ /
      Last update: 2017-07-26 16:21    [W:5.797 / U:0.212 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site