Hey I am not quite sure what your trying to achieve at the moment if you copy the python front-end folder into a base gcc the resulting compiler won't work since you also need libgpython at the toplevel the runtime library which the generated code needs linked against. So i suggest follow these instructions: $ git clone git://crules.org/git/gcc-dev.git $ git branch test $ git checkout test $ git merge python $ git merge documentation Then try and compile... make sure you can compile gcc normaly from a tarball or something so we can be sure there isn't some error on our side with libmpc checks. You should now have gcalc and gccpy, though i reckon gcalc may fail compilation since the langhooks have have changed slightly, but i'll check and fix it soon, i took a few days off there since friday. Back hacking now though :) Hope this helps, sorry for the late reply. --Phil