Cannot find -lX11 (Linux)

Hello

On Windows BlitzMax works perfectly, but on Linux i get this Error when I want to compile my programms:

/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../../i586-suse-linux/bin/ld: cannot find -lX11
collect2: ld returned 1 exit status

on the Fedora Core distri BlitzMax worked without errors, but since i`ve installed Suse 9.2, i get this error.

I think there is only a symlink missing. I tried to create one, but nothing happens.

This would have been better placed in the linux forum, but anyway.
have you installed the xorg-X11-devel-* packages?

Yeah. Looks like you're missing some source libraries.