[Exim] help please - eximon wont install

Morning all.

I have made a serious *&^%$ now.

I would like to install eximon but i am getting a screen full of errors
while building the binary

gcc -o em_StripChart.o -c -O -I. -I../exim_monitor -I/usr/X11R6/include \
../exim_monitor/`echo em_StripChart.o | sed 's/o$/c/'`
../exim_monitor/em_StripChart.c:42:28: X11/IntrinsicP.h: No such file or
directory
../exim_monitor/em_StripChart.c:43:28: X11/StringDefs.h: No such file or
directory
../exim_monitor/em_StripChart.c:44:29: X11/Xaw/XawInit.h: No such file or
directory
../exim_monitor/em_StripChart.c:45:32: X11/Xaw/StripCharP.h: No such file or
directory
../exim_monitor/em_StripChart.c:46:24: X11/Xfuncs.h: No such file or
directory
../exim_monitor/em_StripChart.c:54: parse error before "resources"
../exim_monitor/em_StripChart.c:55: warning: braces around scalar
initializer
../exim_monitor/em_StripChart.c:55: warning: (near initialization for
`resources[0]')
../exim_monitor/em_StripChart.c:55: `XtNwidth' undeclared here (not in a
function)
../exim_monitor/em_StripChart.c:55: initializer element is not constant
../exim_monitor/em_StripChart.c:55: (near initialization for `resources[0]')

Any ideas?

Regards,

Tom