Compile Errors in Linux (Red Hat 5.0)

[Ranger Rick <ranger www ironweb com>]

I've had problems compiling Gnome (I've been trying since .10, still no 
luck...).  I first tried compiling, no luck.  I got the RPMS, they die 
with some ambiguous error.  I got the SRPMs and tried re-building, it 
dies.  When I go into the source and make it myself, I get this error 
(after fixing the g_snprintf stuff...):

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make[2]: Entering directory `/usr/src/redhat/BUILD/gnome-0.12/libgnomeui'
/bin/sh ../libtool --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I.. -Wall 
-I.. -I./.. -I/usr/include  -g -O2  -I/usr/X11R6/include -c gnome-app.c
gcc -DHAVE_CONFIG_H -I. -I. -I.. -Wall -I.. -I./.. -I/usr/include -g -O2 
-I/usr/X11R6/include -c -fPIC -DPIC gnome-app.c
gnome-app.c: In function `gnome_app_get_type':
gnome-app.c:53: `GtkArgSetFunc' undeclared (first use this function)
gnome-app.c:53: (Each undeclared identifier is reported only once
gnome-app.c:53: for each function it appears in.)
gnome-app.c:54: `GtkArgGetFunc' undeclared (first use this function)
gnome-app.c:54: warning: excess elements in struct initializer after 
`gnomeapp_info'
gnome-app.c: In function `gnome_app_new':
gnome-app.c:85: warning: unused variable `prefix'
gnome-app.c: In function `gnome_app_rightclick_menubar':
gnome-app.c:326: warning: unused variable `i'
gnome-app.c: In function `gnome_app_rightclick_toolbar':
gnome-app.c:347: warning: unused variable `i'
gnome-app.c: In function `gnome_app_set_menus':
gnome-app.c:404: warning: `pos' might be used uninitialized in this function
gnome-app.c:406: warning: `location' might be used uninitialized in this 
function
gnome-app.c: At top level:
gnome-app.c:16: warning: `gnome_app_rightclick_event' declared `static' 
but never defined
make[2]: *** [gnome-app.lo] Error 1
make[2]: Leaving directory `/usr/src/redhat/BUILD/gnome-0.12/libgnomeui'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/src/redhat/BUILD/gnome-0.12'
make: *** [all-recursive-am] Error 2
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Any clues on this?