https://github.com/oriansj/M2-Planet
https://savannah.nongnu.org/projects/mescc-tools

A K+R C equivalent C compiler, assembler, linker, dwarf stub generator and shell able to produce
fully standards compliant ELF binaries for Knight, x86, AMD64, armv7l and aarch64
and be bootstrapped from a sub 250byte hex0 hex assembler and a 737byte shell

-Jeremiah