From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752044AbcFVG6W (ORCPT ); Wed, 22 Jun 2016 02:58:22 -0400 Received: from szxga05-in.huawei.com ([58.251.152.179]:55048 "EHLO szxga05-in.huawei.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751772AbcFVG6F (ORCPT ); Wed, 22 Jun 2016 02:58:05 -0400 From: He Kuang To: , , , , , , , , , , , , , , , , , CC: Subject: [PATCH 4/5] perf tools: Let python use correct gcc for build_ext Date: Wed, 22 Jun 2016 06:57:05 +0000 Message-ID: <1466578626-92406-5-git-send-email-hekuang@huawei.com> X-Mailer: git-send-email 1.8.3.4 In-Reply-To: <1466578626-92406-1-git-send-email-hekuang@huawei.com> References: <1466578626-92406-1-git-send-email-hekuang@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.107.193.250] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090202.576A36D5.0059,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 9498769dbf23a7f5107394c8522da5c1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently, python uses host gcc instead of cross-compile gcc in the last step of compiling build_ext(remove '--quiet' to show verbose): cross-gcc ... cross-gcc ... creating ~/out/python_ext_build/lib gcc -pthread -shared -Wl,-z ... This is wrong but may not cause any errors unless the features detected by cross-compiler do not match those for host compiler, and causes the following errors: /usr/lib64/gcc/bin/ld: cannot find -lunwind-x86 collect2: error: ld returned 1 exit status error: command 'gcc' failed with exit status 1 cp: cannot stat ‘~/out/python_ext_build/lib/perf.so’: No such file or directory Makefile.perf:257: recipe for target '~/out/python/perf.so' failed make[1]: *** [~/out/python/perf.so] Error 1 Makefile:68: recipe for target 'all' failed make: *** [all] Error 2 This issue is also reported and anwsered on stackoverflow. Link: http://stackoverflow.com/questions/5986256/python-distutils-gcc-path Signed-off-by: He Kuang --- tools/perf/Makefile.perf | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index bde8cba..d0a2cb1 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -254,7 +254,8 @@ PYTHON_EXT_SRCS := $(shell grep -v ^\# util/python-ext-sources) PYTHON_EXT_DEPS := util/python-ext-sources util/setup.py $(LIBTRACEEVENT) $(LIBAPI) $(OUTPUT)python/perf.so: $(PYTHON_EXT_SRCS) $(PYTHON_EXT_DEPS) $(LIBTRACEEVENT_DYNAMIC_LIST) - $(QUIET_GEN)CFLAGS='$(CFLAGS)' LDFLAGS='$(LDFLAGS) $(LIBTRACEEVENT_DYNAMIC_LIST_LDFLAGS)' \ + $(QUIET_GEN)LDSHARED="$(CC) -pthread -shared" \ + CFLAGS='$(CFLAGS)' LDFLAGS='$(LDFLAGS) $(LIBTRACEEVENT_DYNAMIC_LIST_LDFLAGS)' \ $(PYTHON_WORD) util/setup.py \ --quiet build_ext; \ mkdir -p $(OUTPUT)python && \ -- 1.8.5.2