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Re: Switching to C++ by default in 4.8
- From: Ian Lance Taylor <iant at google dot com>
- To: Tristan Gingold <gingold at adacore dot com>
- Cc: Diego Novillo <dnovillo at google dot com>, gcc <gcc at gcc dot gnu dot org>, Lawrence Crowl <crowl at google dot com>
- Date: Wed, 04 Apr 2012 06:12:57 -0700
- Subject: Re: Switching to C++ by default in 4.8
- References: <4F7B356E.email@example.com> <FFDB1980-E385-48F5-8801-B72789EB92B9@adacore.com>
Tristan Gingold <firstname.lastname@example.org> writes:
> On Apr 3, 2012, at 7:37 PM, Diego Novillo wrote:
>> We would like to start the process to make GCC 4.8 build in C++ mode by default.
>> The mechanics of the change are simple enough. I volunteer to test changing the default on all primary targets (assuming I can get them from the GCC build farm).
> Is it already possible to build stage1 with c++ ?
Yes. There are two relevant configure options: --enable-build-with-cxx
and --enable-build-poststage1-with-cxx. Currently the first defaults to
no and the second defaults to yes. The change in question would be
making the first default to yes.
> The VMS targets are not yet ready with build in C++ mode. This target
> is somewhat special because it can be built only with a cross-compiler
> (we don't support regular 3 stages native builds because there is no
> complete and working well enough UNIX emulation tools).
> I started to build g++ (and gfortran) for ia64 and alpha VMS in order
> to prepare this transition, but having a soft path would be better to
Sounds like you would need to have a C++ cross-compiler for VMS. What
are the issues with making that work?