the future of PicoLisp is dark. I'm not sure if it can survive in packaged
Ubuntu doesn't support it any more, probably due to the PIE (position
independent executable) on x86-64.
And at least on Android they seem to demand switching to Clang. The 32-bit
versions of PicoLisp (pil32 and mini) which are written in C cannot be compiled
on Clang, because Clang doesn't support dynamically allocated arrays, which
pil32 depends on. As far as I notices, pil64 also has trouble on Clang/Android.