I think the posix stuff is only if you're using some of chibi's batteries-included libraries, like filesystem, regexp, shell, tar, zlib. You can probably pretty

I think the posix stuff is only if you're using some of chibi's batteries-included libraries, like filesystem, regexp, shell, tar, zlib. You can probably pretty easily just stub all those files or remove them from the make build and it should build fine. The r7rs core code and libraries don't rely on anything posix related.