Problem with "fopen" in a .dll

Mumit Khan khan@xraylith.wisc.EDU
Tue Aug 31 23:49:00 GMT 1999

CLI <> writes:
> Hi,
> I try to create a .dll library with a "open" function inside.
> When I use this library from another language (Oberon),
> "open" returns -1 and errno is equal to 89
> (operation not supported).
> The same open works fine when I use it inside cygwin.
> Is there some initialisation to do to be able to use open or fopen when
> called from another language ?

It's not a question of another language, but rather the runtime used by
the other language. If your Oberon compiler is built with Cygwin, then
it'll work; otherwise it won't.


Want to unsubscribe from this list?
Send a message to

More information about the Cygwin mailing list