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Re: PATCH RFA: Build stages 2 and 3 with C++

On Sat, 16 Jul 2011 00:04:58 -0700
Ian Lance Taylor <> wrote:

> Andrew Pinski <> writes:
> > On Fri, Jul 15, 2011 at 11:52 PM, Ian Lance Taylor <> wrote:
> >> I would like to propose this patch as a step toward building gcc using a
> >> C++ compiler. ?This patch builds stage1 with the C compiler as usual,
> >> and defaults to building stages 2 and 3 with a C++ compiler built during
> >> stage 1. ?
> >
> > Do you build libstdc++ at stage1 also?  That is what happens if you
> > don't have a C++ compiler to begin with.
> Yes.  With this patch, we build cc1plus at stage 1, and use it to build
> libstdc++ at stage 1, and use both to build stage 2.

I think that we might also want to have some easy & documented way to build the stage1
directly with g++, assuming (or when) it is already available.

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