Re: g-ir-scanner fails with python-3.8

[Lemures Lemniscati <lemures.lemniscati@gmail.com>]

On Sun, 23 May 2021 00:00:25 -0600, Brian Inglis
> On 2021-05-22 17:44, Lemures Lemniscati via Cygwin-apps wrote:
> > On Wed, 19 May 2021 22:09:59 +0100, Jon Turney
> >> On 19/05/2021 20:32, Ken Brown via Cygwin-apps wrote:
> >>> Trying to build harfbuzz, I get the following python failure with
> >>> python-3.8
> >>>
> >>> Traceback (most recent call last):
> > ....
> >>>     File "/usr/lib/gobject-introspection/giscanner/xmlwriter.py", line
> >>> 46, in <module>
> >>>       from giscanner._giscanner import collect_attributes
> >>> ImportError: dynamic module does not define module export function
> >>> (PyInit__giscanner)
> >>
> >> This a problem with the gobject-introspection package.
> >>
> >> _giscanner.dll is linked with python2, but the shbang names 'python', which is now python3.
> >>
> >> I have been working on rebuilding this package, but not quite there yet.
> >>
> >> You can work around this by fixing the shebang in /usr/bin/g-ir-scanner to explicitly name python3.
> >
> >
> > Here are patches...
> >
> > * 0002-gobject-introspection-1.54.1-4.patch:
> >      python3.8 is used explicitly.
> >        Shebangs of g-ir-doc-tool and g-ir-scanner are '/usr/bin/env python3.8'
> >        _giscanner.dll is linked with libpython3.8.dll
> >
> > * 0001-Fix-a-patch-for-giscanner-shlibs.py-to-pass-a-pep8-c.patch:
> >      This has no effect while building.
> >      But needed in order to avoid an error in a test
> >        cygport gobject-introspection.cygport test
> >
> > And with them, following build and test by cygport has succeeded
> > both in x86_64 and i686, on my local machine.
> >
> >    cygport gobject-introspection.cygport download finish all test
> >
> >
> > But on scallywag, only x86_64 build is successful:
> > https://cygwin.com/cgi-bin2/jobs.cgi?id=2841
> 
> I question the definition successful when both logs contain GICOMP syntax errors
> which appear non-fatal and non-terminal:
> 
> i686:
> <https://ci.appveyor.com/project/cygwin/scallywag/builds/39277866/job/8y08y0qcu3k4y69x#L1360>
> GICOMP   /cygdrive/c/projects/playground/gobject-introspection-1.54.1-4.i686/src/gobject-introspection-1.54.1/gir/GL-1.0.gir
> /usr/lib/gcc/i686-pc-cygwin/10/include/stddef.h:424: syntax error, unexpected identifier in '  __float128 __max_align_f128 __attribute__((__aligned__(__alignof(__float128))));' at '__float128'
> 
> x86_64:
> <https://ci.appveyor.com/project/cygwin/scallywag/builds/39277866/job/ufq8i362scpytnx4?fullLog=true#L1372>
>    GISCAN   GModule-2.0.gir
> /usr/include/glib-2.0/gobject/gobject-autocleanups.h:24: syntax error, unexpected typedef-name, expecting identifier or '(' in 'typedef GClosure *GClosure_autoptr;' at 'GClosure_autoptr'
> /usr/include/glib-2.0/gobject/gobject-autocleanups.h:25: syntax error, unexpected typedef-name, expecting identifier or '(' in 'typedef GObject *GObject_autoptr;' at 'GObject_autoptr'
> /usr/include/glib-2.0/gobject/gobject-autocleanups.h:26: syntax error, unexpected typedef-name, expecting identifier or '(' in 'typedef GInitiallyUnowned *GInitiallyUnowned_autoptr;' at 'GInitiallyUnowned_autoptr'
> g-ir-scanner: GModule: warning: 2 warnings suppressed (use --warn-all to see them)
>    GICOMP   GModule-2.0.gir
> g-ir-scanner: GObject: warning: 19 warnings suppressed (use --warn-all to see them)
>    GICOMP /cygdrive/c/projects/playground/gobject-introspection-1.54.1-4.x86_64/src/gobject-introspection-1.54.1/gir/DBusGLib-1.0.gir
>    GISCAN   Gio-2.0.gir
>    GISCAN   GIRepository-2.0.gir
>    GICOMP   GObject-2.0.gir
> /usr/include/glib-2.0/gio/gio-autocleanups.h:24: syntax error, unexpected typedef-name, expecting identifier or '(' in 'typedef GAction *GAction_autoptr;' at 'GAction_autoptr'
> /usr/include/glib-2.0/gio/gio-autocleanups.h:25: syntax error, unexpected typedef-name, expecting identifier or '(' in 'typedef GActionMap *GActionMap_autoptr;' at 'GActionMap_autoptr'
> /usr/include/glib-2.0/gio/gio-autocleanups.h:26: syntax error, unexpected typedef-name, expecting identifier or '(' in 'typedef GAppInfo *GAppInfo_autoptr;' at 'GAppInfo_autoptr'
> /usr/include/glib-2.0/gio/gio-autocleanups.h:27: syntax error, unexpected typedef-name, expecting identifier or '(' in 'typedef GAppLaunchContext *GAppLaunchContext_autoptr;' at 'GAppLaunchContext_autoptr'
> /usr/include/glib-2.0/gio/gio-autocleanups.h:28: syntax error, unexpected typedef-name, expecting identifier or '(' in 'typedef GAppInfoMonitor *GAppInfoMonitor_autoptr;' at 'GAppInfoMonitor_autoptr'
> /usr/include/glib-2.0/gio/gio-autocleanups.h:29: syntax error, unexpected typedef-name, expecting identifier or '(' in 'typedef GApplicationCommandLine *GApplicationCommandLine_autoptr;' at 'GApplicationCommandLine_autoptr'
> ...
> 
> totalling 130 instances - includes/definitions missing?
> 
> -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

Oh, I overlooked them.


I looked into a log corresponding to the current version 1.54.1-3 [1].

[1]: https://cygwin.com/cgi-bin2/jobs.cgi?srcpkg=gobject-introspection&id=2763


* i686: No syntax error related to '__float128' [2]
  at gobject-introspection-1.54.1/gir/GL-1.0.gir.
  So, it is newly introduced

[2]: https://ci.appveyor.com/project/cygwin/scallywag/builds/39168275/job/11sd0x8ywqfe3v2c#L1456


* x86_64: There are similar errors ('unexpected typedef-name') already [3].

[3]: https://ci.appveyor.com/project/cygwin/scallywag/builds/39168275/job/4637hbqdc6b6htvj#L1476


But I've no idea...

Lem