pyopengl install problem on redhat 8.0

[christoph]

on a redhat 8.0 system (a31p thinkpad) i ran

python setup.py build

and got:

gcc -shared build/temp.linux-i686-2.2/GL.ARB.matrix_palette.o -L/usr/lib
-L/usr/local/lib -L/usr/X11/lib -Lbuild/temp.linux-i686-2.2 -lGL -lX11
-lXext -lGLU -linterface_util -lGLE -o
build/lib.linux-i686-2.2/OpenGL/GL/ARB/matrix_palette.so
/usr/bin/ld: cannot find -lX11
collect2: ld returned 1 exit status
error: command 'gcc' failed with exit status 1


please help me!!!
thanks a lot
christoph