Audacious - OLD, PLEASE USE GITHUB DISCUSSIONS/ISSUES

I think this commit broke my audacious building:
https://github.com/audacious-media-player/audacious-plugins/commit/4b0861ae1ebf41ff1f9e0953bc007d536fcc4d34

I'm on Debian sid 64-bit and the following error doesn't make any sense. I disabled the OSD plugin, so why do I need the headers to build one of its subfeatures?

*** Audacious OSD plugin disabled per user request ***
configure: error: Cannot enable X Composite support for Audacious OSD plugin which is disabled

So adding the --disable-aosd-xcomp flag allows me to workaround the error, but now I'm stuck with another:

checking for GLIB214... yes
./configure: line 14213: syntax error near unexpected token `plugindir,'
./configure: line 14213: `PKG_CHECK_VAR(plugindir, audacious, plugin_dir, , AC_MSG_ERROR([Cannot retrieve plugin_dir pkgconfig variable]))'

Here is the script I use to build audacious:

cd /opt/audacious
make distclean
git pull
./autogen.sh
./configure --prefix=/usr/local
make && make install
ldconfig
cd /opt/audacious-plugins
make distclean
git pull
./autogen.sh
./configure --prefix=/usr/local --disable-mpris2 --disable-pulse --disable-amidiplug --disable-xsf --disable-psf --disable-gnomeshortcuts --disable-console --disable-jack --disable-sid --disable-oss4 --disable-sdlout --disable-modplug --disable-scrobbler --disable-filewriter --disable-skins --disable-scrobbler2 --disable-aosd --disable-aosd-xcomp --disable-statusicon --disable-songchange --disable-lirc --disable-cdaudio
make && make install

If you need a full build log, let me know, but there's nothing out of the ordinary until I hit those errors.