gtk-engines-2.8.0 build errors

[Luca <liliana perossa fastwebnet it>]

Hi!

I am trying to compile Gnome-2.16.0, however I am having a problem with
gtk-engines-2.8.0.
The error is the following:
"gcc -DHAVE_CONFIG_H -I. -I. -I../../engines/clearlooks/src
-I../../engines/crux/src -I../../engines/smooth/src
-I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0
-I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/glib-2.0
-I/usr/lib/glib-2.0/include -Wall -Werror -ansi -pedantic -g -O2 -MT
cairo-support.lo -MD -MP -MF .deps/cairo-support.Tpo -c
./cairo-support.c  -fPIC -DPIC -o .libs/cairo-support.o
cc1: warnings being treated as errors
In file included from /usr/include/gtk-2.0/gtk/gtk.h:170,
                 from ./cairo-support.h:3,
                 from ./cairo-support.c:2:
/usr/include/gtk-2.0/gtk/gtktextbuffer.h:52: warning: ISO C restricts
enumerator values to range of 'int'
/usr/include/gtk-2.0/gtk/gtktextbuffer.h:53: warning: ISO C restricts
enumerator values to range of 'int'
/usr/include/gtk-2.0/gtk/gtktextbuffer.h:55: warning: ISO C restricts
enumerator values to range of 'int'
make[2]: *** [cairo-support.lo] Error 1
make[2]: Leaving directory
`/sources/Gnome-2.16/Desktop/gtk-engines-2.8.0/engines/support'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory
`/sources/Gnome-2.16/Desktop/gtk-engines-2.8.0/engines'
make: *** [all-recursive] Error 1"

I am trying to solve it but actually I haven't figured it out, so who
can help me?

Thanks in advance,
Luca