This is an experimental library to workaround incompatibilities in WSL1.

The idea is to patch binaries that use unimplemented functionality with "polyfills", user-space implementations of the missing functionality.

• MAP_FIXED_NOREPLACE is unimplemented
• getsockopt(SO_PROTOCOL) is unimplemented for AF_UNIX
• getsockopt(SO_DOMAIN) is unimplemented for AF_UNIX
• mincore() is unimplemented
• F_OFD_SETLK/F_OFD_GETLK is unimplemented.

Just type make, then copy libwslcompat.so to /usr/local/lib/.

First, verify that this library will fix your program

$ LD_PRELOAD=/usr/local/lib/libwslcompat.so program

If that works, you can make the change permanent

$ patchelf --add-needed /usr/local/lib/libwslcompat.so $(which program)