gnumeric compile problem

[bourne holyfire com (bourne)]

I got this error while compiling gnumeric 0.19

-I/usr/local/include -DNEED_GNOMESUPPORT_H
-I/usr/local/lib/gnome-libs/include -I/usr/local/lib/glib/include
-I/usr/X11R6/include  -I/usr/X11R6/include -I/usr/local/lib/glib/include
-I/usr/local/include  -g -O2 -Wall -Wno-unused  -c boot.c
In file included from boot.c:21:
/usr/local/include/gnome-xml/parser.h:142: error.h: No such file or
directory
make[3]: *** [boot.o] Error 1
make[3]: Leaving directory `/source/gnumeric-0.19/plugins/excel'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/source/gnumeric-0.19/plugins'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/source/gnumeric-0.19'
make: *** [all-recursive-am] Error 2
my system is slackware 3.5
Regards,
-Can