[plt-scheme] make errors

I am not sure if this is an appropriate place to post this, so I
apologize if this is off topic.  I am having problems getting Drscheme
installed on my system.  I am running SuSE 8.1 kernel 2.4.19 gcc 3.2.  I
tried to update my version from 202 to 203 but make fails here:

gcc -c -I/usr/X11R6/include -I./../../mzscheme/gc
-I./../../wxxt/src/AIAI-include -I./../../wxxt/src -I./../../mred/wxme/
-I./../../mzscheme/include/ -DOPERATOR_NEW_ARRAY -DUSE_GL -Dwx_xt -g -O2
-Wall  -I./XWidgets -o XWidgets/xwCommon.o ./XWidgets/xwCommon.c
In file included from XWidgets/xwCommon.c:14:
XWidgets/wxgl.h:2:20: GL/glx.h: No such file or directory
XWidgets/xwCommon.c: In function `realize':
XWidgets/xwCommon.c:670: `GLX_DOUBLEBUFFER' undeclared (first use in this
function)
XWidgets/xwCommon.c:670: (Each undeclared identifier is reported only once
XWidgets/xwCommon.c:670: for each function it appears in.)
XWidgets/xwCommon.c:670: `GLX_RGBA' undeclared (first use in this
function)
XWidgets/xwCommon.c:675: warning: implicit declaration of function
`glXChooseVisual'
XWidgets/xwCommon.c:675: warning: assignment makes pointer from integer
without a cast
make[5]: *** [XWidgets/xwCommon.o] Error 1
make[5]: Leaving directory `/home/psycho/plt/src/wxxt/src'
make[4]: *** [all] Error 2
make[4]: Leaving directory `/home/psycho/plt/src/wxxt/src/x'
make[3]: *** [wx_xt] Error 2
make[3]: Leaving directory `/home/psycho/plt/src/mred'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/psycho/plt/src/mred'
make[1]: *** [mr] Error 2
make[1]: Leaving directory `/home/psycho/plt/src'
make: *** [all] Error 2

This happens for the CVS, 203 and 202 releases.   Any help
would be greatly appreciated.

-Ian Munck