On a Mac running OS X 10.5:
As per previous releases, I have set up _tkinter in Modules/Setup.dist 
with a unix X11 Tcl/Tk build variables. 
I then run ./configure && make

This builds _tkinter with (wrongly) the Mac Tcl framework (ie not X11)

building '_tkinter' extension
gcc-4.2 -fno-strict-aliasing -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-
prototypes -DWITH_APPINIT=1 -
I/System/Library/Frameworks/Tcl.framework/Headers -
I/System/Library/Frameworks/Tcl.framework/Versions/Current/PrivateHeader
s -I/System/Library/Frameworks/Tk.framework/Headers -
I/System/Library/Frameworks/Tk.framework/Versions/Current/PrivateHeaders 
-I/usr/X11R6/include -I. -I/Users/djo35/src/Python-3.0rc1/./Include -I. 
-IInclude -I./Include -I/usr/local/include -I/Users/djo35/src/Python-
3.0rc1/Include -I/Users/djo35/src/Python-3.0rc1 -c 
/Users/djo35/src/Python-3.0rc1/Modules/_tkinter.c -o build/temp.macosx-
10.3-i386-3.0/Users/djo35/src/Python-3.0rc1/Modules/_tkinter.o -
framework Tk

I would like this to build a unix tkinter.so - is this possible? I can't 
find a reference in the 3k documentation. Thanks, Dan