After a succesful configure, make exits with snipped gclosure.c:29:17: fatal error: ffi.h: No such file or directory compilation terminated. I have libffi installed, and locate ffi.h gives: /home/luca/gcc4.6/gcc-4.6.0/libffi/include/ffi.h.in /usr/include/x86_64-linux-gnu/ffi.h /usr/share/doc/ghc-doc/html/users_guide/ffi.html /usr/share/doc/libffi5/html/Using-libffi.html
