Re: [PATCH 2/2] tools: do not include scripts/Kbuild.include

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On Thu, Apr 15, 2021 at 4:40 PM Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote:
>
> On 15/04/21 09:27, Masahiro Yamada wrote:
> > Since commit d9f4ff50d2aa ("kbuild: spilt cc-option and friends to
> > scripts/Makefile.compiler"), some kselftests fail to build.
> >
> > The tools/ directory opted out Kbuild, and went in a different
> > direction. They copy any kind of files to the tools/ directory
> > in order to do whatever they want to do in their world.
> >
> > tools/build/Build.include mimics scripts/Kbuild.include, but some
> > tool Makefiles included the Kbuild one to import a feature that is
> > missing in tools/build/Build.include:
> >
> >   - Commit ec04aa3ae87b ("tools/thermal: tmon: use "-fstack-protector"
> >     only if supported") included scripts/Kbuild.include from
> >     tools/thermal/tmon/Makefile to import the cc-option macro.
> >
> >   - Commit c2390f16fc5b ("selftests: kvm: fix for compilers that do
> >     not support -no-pie") included scripts/Kbuild.include from
> >     tools/testing/selftests/kvm/Makefile to import the try-run macro.
> >
> >   - Commit 9cae4ace80ef ("selftests/bpf: do not ignore clang
> >     failures") included scripts/Kbuild.include from
> >     tools/testing/selftests/bpf/Makefile to import the .DELETE_ON_ERROR
> >     target.
> >
> >   - Commit 0695f8bca93e ("selftests/powerpc: Handle Makefile for
> >     unrecognized option") included scripts/Kbuild.include from
> >     tools/testing/selftests/powerpc/pmu/ebb/Makefile to import the
> >     try-run macro.
> >
> > Copy what they want there, and stop including scripts/Kbuild.include
> > from the tool Makefiles.
>
> I think it would make sense to add try-run, cc-option and
> .DELETE_ON_ERROR to tools/build/Build.include?


To be safe, I just copy-pasted what the makefiles need.
If someone wants to refactor the tool build system, that is fine,
but, to me, I do not see consistent rules or policy under tools/.

-- 
Best Regards
Masahiro Yamada



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