Error compiling dialog-cell-format.c

[jesse andrew cmu edu (Jesse F. Hughes)]

Hey ho.

I'm compiling gnumeric 0.56 and it halts with this error:
make[3]: Entering directory `/usr/src/X11/gnumeric-0.56/src/dialogs'
gcc -DHAVE_CONFIG_H -I. -I. -I../.. -I./..                              
-DGNOMELOCALEDIR=\""/usr/share/locale"\"                -DGNUMERIC_ICONDIR=\""/usr/share/pixmaps/gnumeric"\"  
                  -I/usr/include                   -I/usr/include -DNEED_GNOMESUPPORT_H 
-I/usr/lib/gnome-libs/include -I/usr/lib/glib/include -I/usr/X11R6/include -I/usr/include/gnome-xml           
              -I/usr/lib/glib/include -I/usr/X11R6/include  -g -O2 -Wall -Wunused  -c dialog-cell-format.c
dialog-cell-format.c: In function `cb_font_changed':
dialog-cell-format.c:1161: dereferencing pointer to incomplete type
dialog-cell-format.c:1162: dereferencing pointer to incomplete type
dialog-cell-format.c:1167: dereferencing pointer to incomplete type
dialog-cell-format.c:1169: dereferencing pointer to incomplete type
make[3]: *** [dialog-cell-format.o] Error 1

Any ideas?  

What information should I provide when asking compilation questions
about gnome?  I'm using Slackware 7.0 and X4.0.  Is there a simple
command to let you know the versions of all my relevant gnome
thingies?

Lastly, I couldn't find information on accessing the list archive to
search for this problem.  Is there an archive?
-- 
Jesse Hughes 
"[I]f gravel cannot make itself into an animal in a year, how could it
do it in a million years? The animal would be dead before it got
alive."  --The Creation Evolution Encyclopedia