[oe] [meta-clang][PATCH] clang: make sure python3 is used for native builds

[Martin Jansa]

OK, will do, README should be updated as well as it says to send individual
patches to ML :).

On Fri, Sep 13, 2019 at 3:59 PM Khem Raj <raj.khem at gmail.com> wrote:

> On Fri, Sep 13, 2019 at 3:53 AM Martin Jansa <martin.jansa at gmail.com>
> wrote:
> >
> > Please ignore this one.
> >
> > Now I've noticed that it was like this before "clang: Let cmake figure
> out
> > python version for native" so I'll have to find why it doesn't work for
> me
> > instead of reverting your recent changes.
> >
>
> this change is fine, there is another problem especially when doing stage2
> build
> where it does not respect python settings from env so I was hoping
> that it will help to
> let it detect python from hosttools which it does but I think this
> patch makes things better
> I would certainly think lets keep it. I am also mulling to disable
> stage2, it will mean that
> we dont use LTO to build the compiler itself it might become a bit
> slow to compile programs
>
> can you send this as github pull please since CI is triggered on pulls
> there ?
>
> > On Fri, Sep 13, 2019 at 12:26 PM Martin Jansa <martin.jansa at gmail.com>
> > wrote:
> >
> > > * with /usr/bin/python -> python2.7 on the host, I was seeing:
> > >   CMake Error at
> > >
> work-shared/llvm-project-source-9.0.0-r0/git/lldb/cmake/modules/LLDBConfig.cmake:229
> > > (message):
> > >     Found incompatible Python interpreter (2.7) and Python libraries
> (3.7)
> > >   Call Stack (most recent call first):
> > >     work-shared/llvm-project-source-9.0.0-r0/git/lldb/CMakeLists.txt:20
> > > (include)
> > >
> > > Signed-off-by: Martin Jansa <Martin.Jansa at gmail.com>
> > > ---
> > >  recipes-devtools/clang/clang_git.bb | 3 ++-
> > >  1 file changed, 2 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/recipes-devtools/clang/clang_git.bb
> b/recipes-devtools/clang/
> > > clang_git.bb
> > > index 3906ef1..880307f 100644
> > > --- a/recipes-devtools/clang/clang_git.bb
> > > +++ b/recipes-devtools/clang/clang_git.bb
> > > @@ -17,7 +17,7 @@ BUILD_RANLIB_class-nativesdk = "llvm-ranlib"
> > >  BUILD_NM_class-nativesdk = "llvm-nm"
> > >  LDFLAGS_append_class-nativesdk = " -fuse-ld=gold"
> > >
> > > -inherit cmake cmake-native python3-dir
> > > +inherit cmake cmake-native python3-dir python3native
> > >
> > >  OECMAKE_FIND_ROOT_PATH_MODE_PROGRAM = "BOTH"
> > >
> > > @@ -102,6 +102,7 @@ EXTRA_OECMAKE_append_class-native = "\
> > >                    -DBOOTSTRAP_LLVM_ENABLE_LLD=ON \
> > >                    -DLLVM_TARGETS_TO_BUILD='${LLVM_TARGETS_TO_BUILD}' \
> > >
> > >
> -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD='${LLVM_EXPERIMENTAL_TARGETS_TO_BUILD}'
> > > \
> > > +                  -DPYTHON_EXECUTABLE='${PYTHON}' \
> > >  "
> > >  EXTRA_OECMAKE_append_class-nativesdk = "\
> > >                    -DCMAKE_CROSSCOMPILING:BOOL=ON \
> > > --
> > > 2.17.1
> > >
> > >
> > --
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