wxWidgets-3.0 @3.0.3.1: FTB on Undefined symbol ".objc_class_name_AVPlayerView"

[gthb (Gunnlaugur Thor Briem)]

wxWidgets-3.0 fails to build for me, upgrading from 3.0.3_0+universal to 3.0.3.1, with these salient bits in the log:

:info:build ccache /usr/bin/clang++ -dynamiclib -single_module -headerpad_max_install_names -o /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_graphics_wx
:info:build ld: warning: text-based stub file /System/Library/Frameworks//AudioToolbox.framework/AudioToolbox.tbd and library file /System/Library/Frameworks//AudioToolbox.framework/AudioToolbox are out of sync
[repeats 15 times]
:info:build ld: warning: ignoring file /System/Library/Frameworks//AVKit.framework/AVKit, file was built for x86_64 which is not the architecture being linked (i386): /System/Library/Frameworks//AVKit.framework
:info:build ld: warning: text-based stub file /System/Library/Frameworks//AudioToolbox.framework/AudioToolbox.tbd and library file /System/Library/Frameworks//AudioToolbox.framework/AudioToolbox are out of sync
[repeats 1 time]
:info:build Undefined symbols for architecture i386:
:info:build   ".objc_class_name_AVPlayerView", referenced from:
:info:build       .objc_class_name_wxAVPlayerView in mediadll_osx_cocoa_mediactrl.o
:info:build ld: symbol(s) not found for architecture i386
:info:build clang: error: linker command failed with exit code 1 (use -v to see invocation)
:info:build make: *** [/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_graphics_wxWidgets-3.0/wxWidgets-3.0/work/wxWidgets-3.0.3.1/build/lib/libwx_osx_coc
:info:build make: *** Waiting for unfinished jobs....

File details of those out-of-sync AudioToolbox files:

$ ls -l /System/Library/Frameworks//AudioToolbox.framework/AudioToolbox*
lrwxr-xr-x  1 root  wheel  29 18 okt  2016 /System/Library/Frameworks//AudioToolbox.framework/AudioToolbox -> Versions/Current/AudioToolbox
lrwxr-xr-x  1 root  wheel  33 16 okt 22:34 /System/Library/Frameworks//AudioToolbox.framework/AudioToolbox.tbd -> Versions/Current/AudioToolbox.tbd
$ ls -l /System/Library/Frameworks//AudioToolbox.framework/Versions/Current/AudioToolbox*
-rwxr-xr-x  1 root  wheel  6086320 26 okt 01:52 /System/Library/Frameworks//AudioToolbox.framework/Versions/Current/AudioToolbox
-rw-r--r--  1 root  wheel    41370 25 júl 18:52 /System/Library/Frameworks//AudioToolbox.framework/Versions/Current/AudioToolbox.tbd

... don't know how that out-of-sync-ness happened (also don't know for sure that it is related)

[gthb (Gunnlaugur Thor Briem)]

main.log from the failing build

[mojca (Mojca Miklavec)]

Do you know how to roll back to 3.0.3, increase the revision by one and try to rebuild from source? It would be helpful to know if this is really specific to 3.0.3.1 or if it just happened now after something else has changed on your computer.

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

I ran into this problem when trying to build 32/64-bit universal.
The problem seems to be that AVKit is 64-bit only.
Attached is a proposed solution.

[mojca (Mojca Miklavec)]

Thanks, reported upstream: ​https://trac.wxwidgets.org/ticket/17991

Feel free to commit it (just include a reference to both tickets). There's no need to increase the revision.

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

In d8fd6077d3d3c2ca875b643d6cc6a859b0613e7a/macports-ports:

wxwidgets-3.0: fix build on 32-bit systems

When building for 32-bit systems, do not attempt to use
AVKit since it is 64-bit only.

Closes #55269
See ​https://trac.wxwidgets.org/ticket/17991

No revbump because the port builds correctly or not at all.