Ok, so I've looked a bit into it tonight:- used mingw-w64 4.8.1 (32 bits host)- openblas binaries available on the official website (seem to be built with mingw w64)- used -static-libgcc, -static-libstdc++ and -static-libgfortran- building numpy went ok, test suite almost passes, nothing too alarming.- scipy is still a bit trouble some, I need to look more into it. It definitely looks better than last time I've tried (where it crashed right away).