gnome-libs compilation error:

[Robert Lowe <Robert H Lowe lawrence edu>]

I'm _very_ new at this...

I had installed RPMs for gnome, but never could get gnome-session to run. 
I grabbed new sources for gnome-libs-1.0.5 and gnome-core-1.0.4.  I didn't
get too far, and ended up getting source for gtk+-1.2.1 (I had 1.2.0) and
imlib-1.9.4 (although I had installed the RPM for it).  I also upgraded
glib to 1.2.1.  Now the gnome-libs make bombs with...

gcc -DHAVE_CONFIG_H -I. -I. -I.. -I.. -I./.. -DNEED_GNOMESUPPORT_H -I../support -I../support -I/usr/include -I/usr/lib/glib/include -I/usr/include -DGNOMEBINDIR=/usr/bin -DGNOMESYSCONFDIR=\"/usr/etc\" -DVERSION=\"1.0.5\" -I/usr/X11R6/include -I/usr/lib/glib/include -g -O2 -Wall -Wno-unused -c -fPIC -DPIC gnome-factory-skels.c -o gnome-factory-skels.lo
gnome-factory-skels.c: In function `POA_GNOME_GenericFactory__init':
gnome-factory-skels.c:209: `ORBit_impl_finder' undeclared (first use this function)
gnome-factory-skels.c:209: (Each undeclared identifier is reported only once
gnome-factory-skels.c:209: for each function it appears in.)
gnome-factory-skels.c:209: initializer element for `class_info.relay_call' is not constant
gnome-factory-skels.c:209: `ORBit_local_objref_init' undeclared (first use this function)
gnome-factory-skels.c:209: initializer element for `class_info.init_local_objref' is not constant
make[2]: *** [gnome-factory-skels.lo] Error 1

Is there any hope???

TIA,
Robert