Re: [gtk-osx-users] ITSTool building error with Python built before.

[John Ralls <jralls ceridwen us>]

> On Aug 16, 2022, at 1:03 PM, Pascal <p p14 orange fr> wrote:
>
> > Le 16 août 2022 à 02:09, john <jralls ceridwen us> a écrit :
> >
> > > On Aug 15, 2022, at 9:13 AM, Pascal <p p14 orange fr> wrote:
> > >
> > > Hello,
> > >
> > > I've made a fresh gtk-osx install with:
> > > jhbuild bootstrap-gtk-osx
> > > jhbuild build pygments
> > > jhbuild build meta-gtk-osx-bootstrap
> > >
> > > I've got this error:
> > >
> > > *** Configuring libxml2 *** [5/9]
> > > ...
> > > /Users/me/2022a/src-2022/libxml2-2.9.12/configure --prefix /Users/me/2022a/xnadalib-2022 
> > > --libdir="$JHBUILD_LIBDIR" --with-python  
> > > --with-python-install-dir=/Users/me/2022a/xnadalib-2022/lib/python3.10/site-packages
> > > ...
> > > *** Configuring itstool *** [7/9]
> > > ...
> > > checking whether /Users/me/2022a/src-2022/.new_local/share/virtualenvs/etc-Mg3srn31/bin/python3 version 
> > > is >= 2.6... yes
> > > ...
> > > checking for python module libxml2... /Users/me/2022a/src-2022/itstool-2.0.6/configure: line 2604: 59919 
> > > Done                    echo "import $py_module"
> > >   59920 Segmentation fault: 11  | $PYTHON - >&/dev/null
> > > not found
> > > configure: error: Python module libxml2 is needed to run this package
> > > *** Error during phase configure of itstool: ########## Error running 
> > > /Users/me/2022a/src-2022/itstool-2.0.6/configure --prefix /Users/me/2022a/xnadalib-2022    *** [7/9]
> > >
> > > itstool configure is unfortunately using $PYTHON:
> > >      if test -n "$PYTHON"; then
> > >    # If the user set $PYTHON, use it and don't search something else.
> > >
> > > which is set to (in jhbuild env):
> > > PYTHON=/Users/me/2022a/src-2022/.new_local/share/virtualenvs/etc-Mg3srn31/bin/python3
> > >
> > > This PYTHON variable wasn't set in January'22 the last time I ran jhbuild.
> > > Thus itstool was built ok.
> > >
> > > What could be a workaround?
> >
> >
> > The most straightforward is to add
> >   module_extra_env['itstool'] = ('PYTHON' : os.env.path(prefix, 'bin', 'python3'))
> > to your jhbuildrc-custom.
>
> Thanks John for your quick answer,
>
> My thinking was erroneous, sorry, the error is not that python doesn't find libxml2 like:
> ModuleNotFoundError: No module named 'libxml2'
>
> Whatever the PYTHON value is, as PYTHONPATH is set with ${prefix}/lib/python3.10/site-packages then libxml2 
> is successfully found but provoques a Segmentation fault.
>
> It was ok last time with python 3.9:
> bld% ./xnadalib-2021/bin/python            
> Python 3.9.2 (default, Jan  9 2022, 11:56:26) 
> [Clang 13.0.0 (clang-1300.0.29.3)] on darwin
> Type "help", "copyright", "credits" or "license" for more information.
> > > > import libxml2
>
> But not with python 3.10:
> bld% ./xnadalib-2022/bin/python3
> Python 3.10.2 (main, Aug 15 2022, 12:49:45) [Clang 13.1.6 (clang-1316.0.21.2.5)] on darwin
> Type "help", "copyright", "credits" or "license" for more information.
> > > > import libxml2
> zsh: segmentation fault  ./xnadalib-2022/bin/python3
>
> Both built libxml2 have same version.
>
> I don't find any relevant help on Google.
> libxml2 is a too long story :-( sorry to bother you with that.

Not quite enough information there, but as a guess you didn't rebuild libxml2 with the new python so it's 
linked to libpython3.9.dylib instead of libpython3.10.dylib.

Regards,
John Ralls