Problems compiling with Gtk--

[Christian Schaller <frostking linuxrising com>]

I have just started to learn to code and has downloaded Gtk--, but I are
having great problems getting it to work. I am using RedHat 5.2 with the
stock .99.8 RPMS of Gnome. I have gotten the lattest version of Gtk--
from CVS.
After I having compiled everything with no errors, and trying to compile
the example apps I get the following error message:
g++ 'gtkmm-config --cflags' -o hello hello.cc 'gtkmm-config --libs'
g++: gtkmm-config --cflags: No such file or directory
g++: gtkmm-config --libs: No such file or directory
In file included from /usr/include/gtk--/object.h:29,
                         from /usr/include/gtk--/widget.h:31,
                         from hello.cc:5
/usr/include/gtk--/base.h:29: gtk-config.h: No such file or directory
In file included from /usr/include/gdk--.h:28,
                          from /usr/include/gtk--/base.h:30
                          from /usr/include/gtk--/object.h:29,
                          from /usr/include/gtk--/widget.h:31,
                          from hello.cc:5:
/usr/include/gdk--/types.h:27: gdk-config.h: No such file or directory
In file included from /usr/include/gtk--sig.h:153,
                          from /usr/include/gtk--/base.h:33,
                          from /usr/include/gtk--/object.h:29,
                          from /usr/include/gtk--/widget.h:31,
                          from hello.cc:5:
/usr/include/gtk--sigcommon.h:9: gtk--config.h:  No such file or
directory
In file included from /usr/include/gtk--/widget.h:32,
                          from hello.cc:5:
/usr/include/gtk--/stylr.h:26:  gtk--config.h: No such file or directory

I would appreciate any help I can get to figure out what is wrong (I
know it is probably a  PECAC problem :-) so a little more detail would
be nice.)
The files reported missing are definetly there.

Sincerely,
Christian Schaller