Hello I'm posting again the message.... Recently we've tried to cross-compile ipopt using gfortran for mingw (linux). We found that the configure script couldn't find the gfortran for mingw. Have anyone noticed such a problem? Regards Edson Valle edsoncv at enq.ufrgs.br -- Edson C. do Valle edsoncv at enq.ufrgs.br Skype: edson.cv