linux-kernel - Re: [PATCH v1 00/14] Fix perf tools/lib includes

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Date:   Wed, 9 Nov 2022 15:00:58 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ian Rogers <irogers@...gle.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nicolas Schier <nicolas@...sle.eu>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        bpf@...r.kernel.org, Nick Desaulniers <ndesaulniers@...gle.com>,
        Andrii Nakryiko <andrii.nakryiko@...il.com>,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH v1 00/14] Fix perf tools/lib includes

Em Wed, Nov 09, 2022 at 12:27:19PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Mon, Nov 07, 2022 at 11:35:04PM -0800, Ian Rogers escreveu:
> > The previous build would add -Itools/lib and get dependencies for
> > libtraceevent, libsubcmd, libsymbol, libapi and libbpf meaning that
> > overriding these libraries would change the link time dependency but
> > the headers would erroneously come from tools/lib. Fix the build to
> > install headers and then depend on these. To reduce exposing internal
> > headers/APIs some clean up is performed. tools/lib/symbol has a
> > Makefile added, while tools/lib/api and tools/lib/subcmd have install
> > targets added. The pattern used for the dependencies in Makefile.perf
> > is modelled on libbpf.
> 
> It builds with O=, I tried it one by one, but  there are problems with
> make from a detached tarball, that is how I do the container builds, see
> below, I'm trying to figure this out...
> 
> ⬢[acme@...lbox perf]$ make perf-tar-src-pkg
>   TAR
>   PERF_VERSION = 6.1.rc3.g7e5d8b7a1fbd
> ⬢[acme@...lbox perf]$ mv perf-6.1.0-rc3.tar /tmp
> ⬢[acme@...lbox perf]$ cd /tmp
> ⬢[acme@...lbox tmp]$ tar xf perf-6.1.0-rc3.tar
> ⬢[acme@...lbox tmp]$ cd perf-6.1.0-rc3/
> ⬢[acme@...lbox perf-6.1.0-rc3]$ make -C tools/perf
> make: Entering directory '/tmp/perf-6.1.0-rc3/tools/perf'
>   BUILD:   Doing 'make -j32' parallel build
>   HOSTCC  fixdep.o
>   HOSTLD  fixdep-in.o
>   LINK    fixdep
> 
> Auto-detecting system features:
<SNIP>
> ...                                   dwarf: [ on  ]
>   CC      jvmti/libjvmti.o
> make[3]: *** No rule to make target '/tmp/perf-6.1.0-rc3/tools/perf/libsymbol/libsymbol.a'.  Stop.
> make[2]: *** [Makefile.perf:907: /tmp/perf-6.1.0-rc3/tools/perf/libsymbol/libsymbol.a] Error 2
> make[2]: *** Waiting for unfinished jobs....

So this cures it:

diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST
index f5d72f936a6bad2c..c8e8e05b4ff1f56f 100644
--- a/tools/perf/MANIFEST
+++ b/tools/perf/MANIFEST
@@ -13,8 +13,7 @@ tools/lib/ctype.c
 tools/lib/hweight.c
 tools/lib/rbtree.c
 tools/lib/string.c
-tools/lib/symbol/kallsyms.c
-tools/lib/symbol/kallsyms.h
+tools/lib/symbol
 tools/lib/find_bit.c
 tools/lib/bitmap.c
 tools/lib/list_sort.c