Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753330AbbLRM4Q (ORCPT ); Fri, 18 Dec 2015 07:56:16 -0500 Received: from mail.bmw-carit.de ([62.245.222.98]:39789 "EHLO mail.bmw-carit.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751199AbbLRM4P (ORCPT ); Fri, 18 Dec 2015 07:56:15 -0500 X-CTCH-RefID: str=0001.0A0C0204.56740260.026E,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 Subject: Re: [PATCH 00/10] bpf samples: Uses libbpf in tools/lib to do BPF operations To: "Wangnan (F)" , , , , , , , , , , , References: <1450329794-161948-1-git-send-email-wangnan0@huawei.com> <56725868.6080902@bmw-carit.de> <56725B67.2010309@huawei.com> <56725E59.6090507@bmw-carit.de> <56727259.80002@bmw-carit.de> <567289D6.9050209@huawei.com> <5672BC99.4070605@bmw-carit.de> <567377D0.6080302@huawei.com> <5673C8A6.1080806@bmw-carit.de> <5673E813.2080400@huawei.com> CC: , From: Daniel Wagner X-Enigmail-Draft-Status: N1110 Message-ID: <5674025F.9030203@bmw-carit.de> Date: Fri, 18 Dec 2015 13:55:59 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 In-Reply-To: <5673E813.2080400@huawei.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6550 Lines: 135 On 12/18/2015 12:03 PM, Wangnan (F) wrote: > That's good. This is not a magic. That is what you say! :) > I guess something in your top makefile > causes this feature check failure. I sent a patch on feature checker to > you. > It will appear as [1] soon. Could you please apply it and try again? Sure. > This time you will see test-*.make.output and test-*.make.makeoutput. > test-*.make.output lists your PATH, PWD and the gcc command you use for > feature check. test-*.make.makeoutput is the output of 'make' itself. I > think > from these information we can find the root cause easier. $ ls samples/bpf/libbpf/feature.libbpf/* samples/bpf/libbpf/feature.libbpf/test-all.make.makeoutput samples/bpf/libbpf/feature.libbpf/test-bpf.make.makeoutput samples/bpf/libbpf/feature.libbpf/test-libelf-getphdrnum.make.makeoutput samples/bpf/libbpf/feature.libbpf/test-libelf.make.makeoutput samples/bpf/libbpf/feature.libbpf/test-libelf-mmap.make.makeoutput $ cat samples/bpf/libbpf/feature.libbpf/* make[2]: *** tools/build/feature: No such file or directory. Stop. make[2]: *** tools/build/feature: No such file or directory. Stop. make[2]: *** tools/build/feature: No such file or directory. Stop. make[2]: *** tools/build/feature: No such file or directory. Stop. make[2]: *** tools/build/feature: No such file or directory. Stop. $ find -name *.make.output ./tools/build/feature/test-gtk2.make.output ./tools/build/feature/test-libpython.make.output ./tools/build/feature/test-libunwind.make.output ./tools/build/feature/test-bionic.make.output ./tools/build/feature/test-libelf-mmap.make.output ./tools/build/feature/test-numa_num_possible_cpus.make.output ./tools/build/feature/test-libaudit.make.output ./tools/build/feature/test-libslang.make.output ./tools/build/feature/test-libdw-dwarf-unwind.make.output ./tools/build/feature/test-libbfd.make.output ./tools/build/feature/test-get_cpuid.make.output ./tools/build/feature/test-zlib.make.output ./tools/build/feature/test-libelf.make.output ./tools/build/feature/test-libperl.make.output ./tools/build/feature/test-bpf.make.output ./tools/build/feature/test-dwarf.make.output ./tools/build/feature/test-libnuma.make.output ./tools/build/feature/test-glibc.make.output ./tools/build/feature/test-cplus-demangle.make.output ./tools/build/feature/test-libelf-getphdrnum.make.output ./tools/build/feature/test-all.make.output ./tools/build/feature/test-lzma.make.output $ ls -l tools/build/feature/*.make.output -rw-rw-r-- 1 wagi wagi 419 Dec 17 14:39 tools/build/feature/test-all.make.output -rw-rw-r-- 1 wagi wagi 104 Oct 20 09:59 tools/build/feature/test-bionic.make.output -rw-rw-r-- 1 wagi wagi 0 Dec 17 09:01 tools/build/feature/test-bpf.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-cplus-demangle.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-dwarf.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-get_cpuid.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-glibc.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-gtk2.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-libaudit.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-libbfd.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-libdw-dwarf-unwind.make.output -rw-rw-r-- 1 wagi wagi 0 Dec 17 09:01 tools/build/feature/test-libelf-getphdrnum.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-libelf.make.output -rw-rw-r-- 1 wagi wagi 0 Dec 17 09:01 tools/build/feature/test-libelf-mmap.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-libnuma.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-libperl.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-libpython.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-libslang.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-libunwind.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-lzma.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-numa_num_possible_cpus.make.output -rw-rw-r-- 1 wagi wagi 0 Oct 20 09:59 tools/build/feature/test-zlib.make.output $ cat tools/build/feature/test-all.make.output In file included from /usr/include/Python.h:7:0, from test-libpython.c:1, from test-all.c:13: /usr/lib64/perl5/CORE/patchlevel.h:135:2: error: ‘NULL’ undeclared here (not in a function) NULL ^ In file included from test-libpython.c:1:0, from test-all.c:13: /usr/include/Python.h:8:22: fatal error: pyconfig.h: No such file or directory compilation terminated. $ cat tools/build/feature/test-bionic.make.output test-bionic.c:1:31: fatal error: android/api-level.h: No such file or directory compilation terminated. Could it be that $(srcdir) somehow is not correct? I exchanged feature_dir := $(srctree)/tools/build/feature to feature_dir := /home/wagi/src/linux/tools/build/feature and then the feature check worked in this case but still no fun: $ make samples/bpf/ CHK include/config/kernel.release CHK include/generated/uapi/linux/version.h CHK include/generated/utsrelease.h CHK include/generated/bounds.h CHK include/generated/timeconst.h CHK include/generated/asm-offsets.h CALL scripts/checksyscalls.sh make -C /home/wagi/src/linux/tools/lib/bpf O=/home/wagi/src/linux/samples/bpf/libbpf CFLAGS= LDFLAGS= V=1 /home/wagi/src/linux/samples/bpf/libbpf/libbpf.a Auto-detecting system features: ... libelf: [ on ] ... bpf: [ on ] make -f ./tools/build/Makefile.build dir=. obj=libbpf make[3]: tools/build/Makefile.build: No such file or directory make[3]: *** No rule to make target 'tools/build/Makefile.build'. Stop. Makefile:155: recipe for target '/home/wagi/src/linux/samples/bpf/libbpf/libbpf-in.o' failed make[2]: *** [/home/wagi/src/linux/samples/bpf/libbpf/libbpf-in.o] Error 2 samples/bpf/Makefile:10: recipe for target 'samples/bpf/libbpf/libbpf.a' failed make[1]: *** [samples/bpf/libbpf/libbpf.a] Error 2 Makefile:1550: recipe for target 'samples/bpf/' failed make: *** [samples/bpf/] Error 2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/