CMOC
CMOC is a 6809-generating cross-compiler for a subset of the C language.
CMOC 0.1.61 https://perso.b2b2c.ca/~sarrazip/dev/cmoc.html
Built and working on:
gcc (Debian 8.3.0-6) 8.3.0 https://gcc.gnu.org/
Debian GNU/Linux 10 (buster) update 2 https://www.debian.org/
Linux 4.19.67 https://kernel.org