I managed to build a first version but I still have to package everyting and test on my GCW (which I do not have with me right now...)
I'm a bit worried as there are lot of flag to defines, makefiles for GP2X provided seems to not match the sources anymore and such... it also tries to link with libmad which was removed from the current gcw system... but removing the -lmad pose no compilation problem... I'm a bit worried nothing will work if I try right now
edit: ok, it more or less work... no sound, key mapping could probably take some more work, setting up a repo... reverting some useless change I made to some place due to my inability to understand the project... overall sounds really promising, it runs pretty well...
edit2: music work, default key mapping do not seems bad... guess I now have to revert any useless or bad change I made and publish the whole on my Github before a release... sounds promising. but well, after tyrian I find this game rather awful...