Jan Robbe wrote: > I suppose I am missing a library or something. Does anybody has an > idea what goes wrong? The path to the X11 (X-Window) libraries ist set > in the environment variables. Maybe, the X11 libs are not complete? Environment variables don't do anything; the compiler won't guess what you want. If you want to link against the X11 library you need to add -lX11 (or whatever) to the link command. > When compiling Xwin.c during the creation libPlt.a everything worked > fine since the X11 libs, which were required by Xwin.c (Xlib.h, > cursorfont.h, ..), could obviously be found. That's incorrect logic. Creating a static library does not involve any linking, it's just a collection of object files in an archive. They can have any number of unresolved references. You have to actually link something in order to see undefined references. Brian
