Only the LINUX makefile has been updated to work with GDK libraries.
If you want to use wmcube on another supported platform (solaris/*bsd, etc),
you will need to modify the appropriate Makefile, pointing CFLAGS to the
correct location for GDK/GTK headers and replacing X11 libraries with
-lgdk, and possibly adding -L/path/to/gdk/libs.

If you run a "Linux distribution" chances are gdk/gtk is installed in
/usr/include and /usr/lib, so you might need to modify Makefile and
adjust -I and -L lines.

timecop@japan.co.jp