Can I disable c++ when compiling gdc?

[Timo Sintonen via D.gnu]

This came to my mind while reading the other list.
Compiling gdc automatically enables compiling c++. This is 
natural because gdc is made with c++.
When making a cross compiler only host c++ is needed, not the 
target one. C++ for the target is still built and it also 
requires target libc (or newlib) because of building the c++ 
runtime library.

Does anybody know if it is possible to disable building the 
target c++ compiler?