gtkD doesn't compile on windows

[Trass3r]

> So your command line is simply "rdmd --build-only --chatty  
> -I\d\ext\gtkd\src -L-ldl t.d"?

Yes, and in theory that would be enough.
(if it didn't put 'dmd' in the .rsp)

> rdmd calls "dmd -I\d\ext\gtkd\src -L-ldl -v -o- "t.d" -I"." >t.d.deps",  
> and then segfaults (win7x64).

Doesn't segfault on Linux x64. You should compile a debug version of rdmd  
and see if you get a stacktrace.
github.com/D-Programming-Language/tools