cog/ThirdParty/libid3tag/README.md

Built with the Arch Linux defaults, sort of:

patch -Np1 -i libid3tag-0.16.1.bugfix.patch

cmake -B build.x86 -DCMAKE_OSX_ARCHITECTURES="x86_64" -DCMAKE_OSX_DEPLOYMENT_TARGET="10.13" -DBUILD_SHARED_LIBS=OFF
cmake -B build.arm -DCMAKE_OSX_ARCHITECTURES="arm64" -DCMAKE_OSX_DEPLOYMENT_TARGET="11.0" -DBUILD_SHARED_LIBS=OFF

cd build.x86
make -j8
cd ..

cd build.arm
make -j8
cd ..

mkdir out.release
lipo -create -output out.release/libid3tag.a build.x86/libid3tag.a build.arm/libid3tag.a

Version 0.16.1 was used, with a patch to fix a crash bug on invalid tags.