linux-kernel - Re: [PATCH] tools/lib/perf: make the static libperf complete

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Date:   Mon, 27 Sep 2021 15:12:33 -0700
From:   Jinshan Xiong <jinshan.xiong@...il.com>
To:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
Cc:     jolsa@...hat.com, Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tools/lib/perf: make the static libperf complete

Thanks for pointing it out. I will make the static library a separate
target for installation. Patch is coming soon.

Jinshan


On Sun, Sep 26, 2021 at 5:14 AM Arnaldo Carvalho de Melo
<arnaldo.melo@...il.com> wrote:
>
> Em Sat, Sep 25, 2021 at 07:30:24PM -0700, Jinshan Xiong escreveu:
> > This patch makes libperf.a complete. Initially it misses the symbols
> > fdarray_* that makes it unusable:
> >    $ nm tools/lib/perf/libperf.a | grep fdarray_
> >                     U fdarray__add
> >    0000000000002b3e t fdarray__available_entries
> >                     U fdarray__exit
> >                     U fdarray__filter
> >                     U fdarray__grow
> >                     U fdarray__init
> >                     U fdarray__poll
> >
> > After this patch is applied:
> >     $ nm tools/lib/perf/libperf.a | grep fdarray_
> >     00000000000063f7 T fdarray__add
> >     ......
> >     00000000000065d4 T fdarray__poll
>
> Have you tried to build tools/perf/ with this?
>
>   LINK    /tmp/build/perf/plugins/plugin_futex.so
>   LINK    /tmp/build/perf/plugins/plugin_jbd2.so
>   INSTALL trace_plugins
> /usr/bin/ld: /tmp/build/perf/libperf.a(libperf-ar.o):/var/home/acme/git/perf/tools/lib/api/debug.c:20: multiple definition of `__pr_debug'; /tmp/build/perf/libapi.a(libapi-in.o):/var/home/acme/git/perf/tools/lib/api/debug.c:20: first defined here
> /usr/bin/ld: /tmp/build/perf/libperf.a(libperf-ar.o): in function `sysfs__read_bool':
> /var/home/acme/git/perf/tools/lib/api/fs/fs.c:505: multiple definition of `sysfs__read_bool'; /tmp/build/perf/libapi.a(libapi-in.o):/var/home/acme/git/perf/tools/lib/api/fs/fs.c:505: first defined here
> /usr/bin/ld: /tmp/build/perf/libperf.a(libperf-ar.o): in function `fdarray__poll':
> /var/home/acme/git/perf/tools/lib/api/fd/array.c:120: multiple definition of `fdarray__poll'; /tmp/build/perf/libapi.a(libapi-in.o):/var/home/acme/git/perf/tools/lib/api/fd/array.c:120: first defined here
> /usr/bin/ld: /tmp/build/perf/libperf.a(libperf-ar.o): in function `tracefs__configured':
> /var/home/acme/git/perf/tools/lib/api/fs/fs.c:316: multiple definition of `tracefs__configured'; /tmp/build/perf/libapi.a(libapi-in.o):/var/home/acme/git/perf/tools/lib/api/fs/fs.c:316: first defined here
> /usr/bin/ld: /tmp/build/perf/libperf.a(libperf-ar.o): in function `sysfs__read_int':
> /var/home/acme/git/perf/tools/lib/api/fs/fs.c:479: multiple definition of `sysfs__read_int'; /tmp/build/perf/libapi.a(libapi-in.o):/var/home/acme/git/perf/tools/lib/api/fs/fs.c:479: first defined here
> /usr/bin/ld: /tmp/build/perf/libperf.a(libperf-ar.o): in function `fdarray__fprintf':
> /var/home/acme/git/perf/tools/lib/api/fd/array.c:125: multiple definition of `fdarray__fprintf'; /tmp/build/perf/libapi.a(libapi-in.o):/var/home/acme/git/perf/tools/lib/api/fd/array.c:125: first defined here
> /usr/bin/ld: /tmp/build/perf/libperf.a(libperf-ar.o): in function `sysfs__write_int':
> /var/home/acme/git/perf/tools/lib/api/fs/fs.c:547: multiple definition of `sysfs__write_int'; /tmp/build/perf/libapi.a(libapi-in.o):/var/home/acme/git/perf/tools/lib/api/fs/fs.c:547: first defined here
> /usr/bin/ld: /tmp/build/perf/libperf.a(libperf-ar.o): in function `filename__read_str':
> /var/home/acme/git/perf/tools/lib/api/fs/fs.c:378: multiple definition of `filename__read_str'; /tmp/build/perf/libapi.a(libapi-in.o):/var/home/acme/git/perf/tools/lib/api/fs/fs.c:378: first defined here
> /usr/bin/ld: /tmp/build/perf/libperf.a(libperf-ar.o): in function `hugetlbfs__mountpoint':
> /var/home/acme/git/perf/tools/lib/api/fs/fs.c:317: multiple definition of `hugetlbfs__mountpoint'; /tmp/build/perf/libapi.a(libapi-in.o):/var/home/acme/git/perf/tools/lib/api/fs/fs.c:317: first defined here
> /usr/bin/ld: /tmp/build/perf/libperf.a(libperf-ar.o): in function `debugfs__mountpoint':
> /var/home/acme/git/perf/tools/lib/api/fs/fs.c:315: multiple definition of `debugfs__mountpoint'; /tmp/build/perf/libapi.a(libapi-in.o):/var/home/acme/git/perf/tools/lib/api/fs/fs.c:315: first defined here
> /usr/bin/ld: /tmp/build/perf/libperf.a(libperf-ar.o): in function `fdarray__delete':
> /var/home/acme/git/perf/tools/lib/api/fd/array.c:71: multiple definition of `fdarray__delete'; /tmp/build/perf/libapi.a(libapi-in.o):/var/home/acme/git/perf/tools/lib/api/fd/array.c:71: first defined here
> /usr/bin/ld: /tmp/build/perf/libperf.a(libperf-ar.o): in function `procfs__mountpoint':
> /var/home/acme/git/perf/tools/lib/api/fs/fs.c:314: multiple definition of `procfs__mountpoint'; /tmp/build/perf/libapi.a(libapi-in.o):/var/home/acme/git/perf/tools/lib/api/fs/fs.c:314: first defined here
> /usr/bin/ld: /tmp/build/perf/libperf.a(libperf-ar.o): in function `get_tracing_file':
> /var/home/acme/git/perf/tools/lib/api/fs/tracing_path.c:74: multiple definition of `get_tracing_file'; /tmp/build/perf/libapi.a(libapi-in.o):/var/home/acme/git/perf/tools/lib/api/fs/tracing_path.c:74: first defined here
>
> You probably need to include libapi.a as well.
>
> - Arnaldo