xash3d-fwgs/Documentation/musl.md

Xash3D FWGS on musl

Xash3D FWGS works on musl out of the box. However, the engine doesn't try to differentiate glibc and musl anymore. If you see error similar to:

Host_InitError: can't initialize cl_dlls/client.so: Error relocating valve/cl_dlls/client.so: __sprintf_chk: symbol not found

... or you know that the game you're running is linked against glibc, you can try using libgcompat, like this:

$ LD_PRELOAD=/lib/libgcompat.so.0 ./xash3d ...

It will automatically add the missing symbols that glibc binaries usually need. In the future we might automatically link engine against libgcompat for better compatibility with prebuilt or closed-source games, if there will be any use for this.