linux-kernel - Re: [PATCH v3 0/9] perf build: Make build-test faster

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Date:	Fri, 15 Jan 2016 22:54:47 +0800
From:	pi3orama <pi3orama@....com>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	Jiri Olsa <jolsa@...hat.com>, Wang Nan <wangnan0@...wei.com>,
	linux-kernel@...r.kernel.org, lizefan@...wei.com
Subject: Re: [PATCH v3 0/9] perf build: Make build-test faster



发自我的 iPhone

> 在 2016年1月15日，下午10:36，Arnaldo Carvalho de Melo <acme@...nel.org> 写道：
> 
> Em Fri, Jan 15, 2016 at 11:20:05AM +0100, Jiri Olsa escreveu:
>> On Fri, Jan 15, 2016 at 04:00:12AM +0000, Wang Nan wrote:
>>> Utilise Jiri's feature-dump make target to avoid make build-test check
>>> features too many times.
>>> 
>>> v2 -> v3: add $(O_OPT) to 'make clean' to ensure the correctness of
>>>          config-clean.
>>> 
>>> Jiri Olsa (2):
>>>  perf build: Add feature-dump target
>>>  perf build: Introduce FEATURES_DUMP make variable
>>> 
>>> Wang Nan (7):
>>>  perf build: Set parallel making options build-test
>>>  perf build: Pass O option to Makefile.perf in build-test
>>>  perf build: Test correct path of perf in build-test
>>>  perf build: Pass O option to kernel makefile in build-test
>>>  tools build: Allow subprojects select all feature checkers
>>>  perf build: Select all feature checkers for feature-dump
>>>  perf build: Use feature dump file for build-test
>>> 
>>> tools/build/Makefile.feature | 21 ++++++++++-
>>> tools/perf/Makefile.perf     | 34 +++++++++++++++++-
>>> tools/perf/config/Makefile   |  4 +++
>>> tools/perf/tests/make        | 86 ++++++++++++++++++++++++++++++++++++--------
>>> 4 files changed, 128 insertions(+), 17 deletions(-)
>> 
>> got error on:
>> 
>> [jolsa@...va perf]$ make -f tests/make 
>> Testing Makefile
>> readlink: missing operand
>> Try 'readlink --help' for more information.
>> - /BUILD_TEST_FEATURE_DUMP: cd . && make FEATURE_DUMP_COPY=/BUILD_TEST_FEATURE_DUMP  feature-dump
>> cd . && make FEATURE_DUMP_COPY=/BUILD_TEST_FEATURE_DUMP feature-dump
>> tests/make:329: recipe for target '/BUILD_TEST_FEATURE_DUMP' failed
>> make[1]: *** [/BUILD_TEST_FEATURE_DUMP] Error 2
>> tests/make:7: recipe for target 'all' failed
>> make: *** [all] Error 2
> 
> You mean with all patches applied, right? I haven't got that far, first
> and second patches are ok by now, I'm failing at patch 3, checking if
> setting up the python stuff to honour O= is in a later patch...
> 
> [acme@zoo linux]$ rm -rf /tmp/build/perf ; mkdir -p /tmp/build/perf ; make -C tools/perf O=/tmp/build/perf build-test
> make: Entering directory '/home/git/linux/tools/perf'
> Testing Makefile
> - make_no_ui: cd . && make -f Makefile   DESTDIR=/tmp/tmp.RYVWn1yMBU NO_NEWT=1 NO_SLANG=1 NO_GTK2=1
> - make_tags: cd . && make -f Makefile   DESTDIR=/tmp/tmp.iNjVFs9Eje tags - make_python_perf_so: cd . && make -f Makefile DESTDIR=/tmp/tmp.mvHDSUV1pl python/perf.so
> cd . && make -f Makefile DESTDIR=/tmp/tmp.mvHDSUV1pl python/perf.so
>  BUILD:   Doing 'make -j4' parallel build
> 
> Auto-detecting system features:
> ...                         dwarf: [ on  ]
> ...                         glibc: [ on  ]
> ...                          gtk2: [ on  ]
> ...                      libaudit: [ on  ]
> ...                        libbfd: [ on  ]
> ...                        libelf: [ on  ]
> ...                       libnuma: [ on  ]
> ...        numa_num_possible_cpus: [ on  ]
> ...                       libperl: [ on  ]
> ...                     libpython: [ on  ]
> ...                      libslang: [ on  ]
> ...                     libunwind: [ on  ]
> ...            libdw-dwarf-unwind: [ on  ]
> ...                          zlib: [ on  ]
> ...                          lzma: [ on  ]
> ...                     get_cpuid: [ on  ]
> ...                           bpf: [ on  ]
> 
> make[4]: Nothing to be done for 'python/perf.so'.
>  test: test -f /tmp/build/perf/python/perf.so
> tests/make:272: recipe for target 'make_python_perf_so' failed
> make[2]: *** [make_python_perf_so] Error 1
> tests/make:7: recipe for target 'all' failed
> make[1]: *** [all] Error 2
> Makefile:81: recipe for target 'build-test' failed
> make: *** [build-test] Error 2
> make: Leaving directory '/home/git/linux/tools/perf'
> [acme@zoo linux]$ find . -name "*.so"
> ./tools/perf/python_ext_build/lib/perf.so
> ./tools/perf/python/perf.so
> [acme@zoo linux]$
> 
> I.e. the test -f follows O=, but the process to generate python/perf.so
> doesn't and ends up pollutting the source tree.
> 

Is your source directory already polluted
before this test?

> - Arnaldo