build error

Hy everybody,

I'm trying to build gps 4.0.2 from sources and I got the following build 
error.

gnatmake -Pgps gps-main.adb
gcc -c -g -gnatec=/home/sonic/gps_sources/gps-4.0.2/gps/gnat.adc -O2 
-gnatn -gnatws -I- -gnatA 
/home/sonic/gps_sources/gps-4.0.2/gps/src/gps-main.adb
gcc -c -g -gnatec=/home/sonic/gps_sources/gps-4.0.2/gps/gnat.adc -O2 
-gnatn -gnatws -I- -gnatA 
/home/sonic/gps_sources/gps-4.0.2/ada_module/src/ada_module.adb
gcc -c -g -gnatec=/home/sonic/gps_sources/gps-4.0.2/gps/gnat.adc -O2 
-gnatn -gnatws -I- -gnatA 
/home/sonic/gps_sources/gps-4.0.2/builder/src/builder_module.adb
builder_module.adb:1736:19: cannot use function "Change_Entry" in a 
procedure call
builder_module.adb:1850:22: cannot use function "Change_Entry" in a 
procedure call
builder_module.adb:1903:13: cannot use function "Change_Entry" in a 
procedure call
builder_module.adb:1912:13: cannot use function "Change_Entry" in a 
procedure call
gnatmake: 
"/home/sonic/gps_sources/gps-4.0.2/builder/src/builder_module.adb" 
compilation error
make[1]: *** [internal-build] Error 4
make: *** [default] Error 2

The "Change_Entry" procedure is from class Gtk.Accel_Map, but gtkada is 
configured properly on my system.
I would really appreciate your help.

Thanks in advance.
Sonic