@timothee I sent you build instructions for libffi on gitter, but here they are just for posterity:
> I followed the instructions here: [https://proj.goldencode.com/projects/p2j/wiki/Building_and_Installing_libffi_on_Windows](https://proj.goldencode.com/projects/p2j/wiki/Building_and_Installing_libffi_on_Windows) Making sure to configure using the MSYS as suggested. But I used the tar.gz from [https://github.com/libffi/libffi/releases/download/v3.3/libffi-3.3.tar.gz](https://github.com/libffi/libffi/releases/download/v3.3/libffi-3.3.tar.gz) Also, the command to configure for 32 bit (via MSYS terminal) is: CC="/c/Users/jyapa/Downloads/mingw32/bin/i686-w64-mingw32-gcc.exe" sh ./configure --build=i686-w64-mingw32 --host=i686-w64-mingw32 Run and for 64 bit is CC="/c/Users/jyapa/Downloads/mingw64/bin/x86_64-w64-mingw32-gcc.exe" sh ./configure --build=x86_64-w64-mingw32 --host=x86_64-w64-mingw32 Run ^^ the above two configures lets you cross compile to Win64 from Win32 and vice-versa. Not sure if the libs are portable across Windows or not, but I could upload them if needed.
