[Exim] Building Exim-Monitor

Hi!

I am trying to build the monitor binary. No success!
What am I missing here?

../exim_monitor/em_StripChart.c:42: X11/IntrinsicP.h: No such file or
directory
../exim_monitor/em_StripChart.c:43: X11/StringDefs.h: No such file or
directory
../exim_monitor/em_StripChart.c:44: X11/Xaw/XawInit.h: No such file or
directory
../exim_monitor/em_StripChart.c:45: X11/Xaw/StripCharP.h: No such file or
directory
../exim_monitor/em_StripChart.c:46: X11/Xfuncs.h: No such file or directory

These files do NOT exist on my system. Nowhere.
I use SuSE 6.2. Any experience with that?

Thanks!!

Daniel