Date: Thu, 27 Jan 94 09:32:57 +0100 From: torsten DOT porwol AT mpi-dortmund DOT mpg DOT de (T.Porwol) To: djgpp AT sun DOT soe DOT clarkson DOT edu Subject: Re: library functions If I remember things correctly the problem you are facing is due to a header file in the libI77 part of f2c. Just look for the definitions if DOS or MSDOS are defined. If MSDOS or DOS is defined open() is redefined as _open(). Hope this helps if not let me know and I will check it on the weekend. Dr. T. Porwol