Re: [gtk-osx-users] Error when compiling gobject-introspection on macOS 10.13

[John Ralls <jralls ceridwen us>]

> On Sep 16, 2017, at 7:42 AM, Jiří Techet <techet gmail com> wrote:
>
> Hi,
>
> I got the following error during jhbuild when compiling gobject-introspection:
>
>   GISCAN   GLib-2.0.gir
> Traceback (most recent call last):
>   File "./g-ir-scanner", line 66, in <module>
>     sys.exit(scanner_main(sys.argv))
>   File "./giscanner/scannermain.py", line 538, in scanner_main
>     ss = create_source_scanner(options, args)
>   File "./giscanner/scannermain.py", line 446, in create_source_scanner
>     ss.parse_files(filenames)
>   File "./giscanner/sourcescanner.py", line 262, in parse_files
>     self._parse(headers)
>   File "./giscanner/sourcescanner.py", line 305, in _parse
>     self._cpp_options)
>   File "./giscanner/ccompiler.py", line 200, in preprocess
>     extra_postargs=extra_postargs)
>   File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/unixccompiler.py", 
> line 112, in preprocess
>     self.spawn(pp_args)
>   File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/ccompiler.py", 
> line 875, in spawn
>     spawn(cmd, dry_run=self.dry_run)
>   File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/spawn.py", line 
> 38, in spawn
>     _spawn_posix(cmd, search_path, dry_run=dry_run)
>   File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/spawn.py", line 
> 139, in _spawn_posix
>     raise DistutilsPlatformError(my_msg)
> distutils.errors.DistutilsPlatformError: $MACOSX_DEPLOYMENT_TARGET mismatch: now "10.6" but "10.13" during 
> configure
> make[2]: *** [GLib-2.0.gir] Error 1
> make[1]: *** [all-recursive] Error 1
> make: *** [all] Error 2
> *** Error during phase build of gobject-introspection: ########## Error running make -j 9  *** [5/11]
>
>
> My deployment target is 10.6 and it seems that the deployment target of python under macOS 10.13 is 10.13 
> which leads to this error.
>
> I don't know what the proper fix is but as a workaround I tried to add the following line into 
> giscanner/ccompiler.py just before the call which causes the error:
>
> os.environ["MACOSX_DEPLOYMENT_TARGET"] = "10.13"
>
> This overrides the deployment target just for the run of the introspection script and makes it work. Not 
> very nice though.

That’s always been true. Build python as part of your project and include it in the bundle. Note that it 
needs openssl. Another user found that building both of them before bootstrapping allowed openssl to build 
and install without manual intervention, but I haven’t been able to get that to work for me.

BTW have you tested your build on a 10.6 system? When I tried to build for 10.6 using the 10.11 SDK it built 
but crashed when I tried to run on a 10.6 VM.

Regards,
John Ralls