Dude, you are magic! Your change has fixed the issue I was having compiling the cube example.

As a side note I did try ePSXe originally, but just had black screen.

It's really nice to see something like this being worked on. Your code built fine on Ubuntu with GCC 7.5.0 and converted the libraries as expected. Toolchain is Binutils 2.34 and GCC 9.3.0 (mipsel-unknown) and the cube example compiles ok. However I seem to not be able to get it to run. (Have tried ...