Error compiling gnome-libs-1.0.5

[Guy Steven <rgs etive southern co nz>]

Why does my build of gnome-lib-1.0.5 fail with the following errors?

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 -O2 -m486 -fno-strength-reduce -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 in 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 in 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
make[2]: Leaving directory `/usr/src/redhat/BUILD/gnome-libs-1.0.5/libgnorba'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/src/redhat/BUILD/gnome-libs-1.0.5