[Exim] Eximon make fails

I'm trying to compile eximon with exim, using RH enterprise 3, if I copy
exim_monitor/EDITME to Local/eximon.conf and left it as it is. When I do make,
it fails with:

../exim_monitor/em_StripChart.c:467: warning: parameter names (without types)
in function declaration
../exim_monitor/em_StripChart.c:467: conflicting types for `CreateGC'
../exim_monitor/em_StripChart.c:77: previous declaration of `CreateGC'
../exim_monitor/em_StripChart.c:467: warning: data definition has no type or
storage class
../exim_monitor/em_StripChart.c:469: syntax error before "return"
../exim_monitor/em_StripChart.c:483: syntax error before "StripChartWidget"
../exim_monitor/em_StripChart.c:483: warning: data definition has no type or
storage class
../exim_monitor/em_StripChart.c:486: warning: data definition has no type or
storage class
../exim_monitor/em_StripChart.c:489: syntax error before "if"
../exim_monitor/em_StripChart.c:495: `XPoint' undeclared here (not in a
function)
../exim_monitor/em_StripChart.c:495: invalid type argument of `->'
../exim_monitor/em_StripChart.c:495: warning: data definition has no type or
storage class
../exim_monitor/em_StripChart.c:497: `XPoint' undeclared here (not in a
function)
../exim_monitor/em_StripChart.c:497: syntax error before ')' token
../exim_monitor/em_StripChart.c:504: syntax error before '.' token
../exim_monitor/em_StripChart.c:312: register name not specified for `next'
make[1]: *** [em_StripChart.o] Error 1
make[1]: Leaving directory `/usr/local/sources/exim-4.30/build-Linux-i386'
make: *** [go] Error 2

Have I missed something?

-Miika