Voodoo UML Class Diagram Editor

Here's the error message:

g++ -fpic -O2 -Wall -fno-exceptions -fno-rtti -Iinclude
-I/usr/local/include/ -DUSE_TCL_STUBS -DUSE_TK_STUBS
-DSWIGSTATIC= -c -o bin/voodoo_wrap.o
lowlevel/voodoo_wrap.cc
lowlevel/voodoo_wrap.cc: In function `int
Voodoo_Init(Tcl_Interp *)':
lowlevel/voodoo_wrap.cc:1595: argument passing to `int
(*)(void *, Tcl_Interp *, int, const char **)' from
`int (*)(void *, Tcl_Interp *, int, char **)'
make: *** [bin/voodoo_wrap.o] Error 1

I'm using tk/tcl 8.4.1 and g++ 3.2

If any other info is needed, please tell me.