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

[egallager at gcc dot gnu.org]

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

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-07-22
                 CC|                            |egallager at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #2)
> (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.

Confirming that bootstrapping libstdc++ with multilibs is an excessive waste of
resources.