>A file named "unixemul.lib" comes in the "device-stream" archive; however,
 >this doesn't do the job, even if renamed to "ixemul.library."

There would be no reason to rename ixemul.library as unixemul.lib anyway - 
Amiga shared libraries don't work if they have been renamed.

So it's the wrong file, I'm afraid.  :-(

Regards...

Jim