[Bug bootstrap/52509] target libstdc++-v3 should not be bootstrapped, libstdc++-v3 should also be a host_module (bootstrapped)

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52509

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-03-06 
13:15:37 UTC ---
(In reply to comment #1)
> Well, for profiledbootstrap I think it is nice if target-libstdc++-v3 is
> actually bootstrapped, because then we are able to train the C++ FE on real 
> C++
> code.

Well, we bootstrap the host-libstdc++, that should be enough, no?

Bootstrapping libstdc++ multilib and with building the PCHs is excessive
waste of resources for building GCC with a C++ compiler.