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Re: patch for -Wno-long-long and early GNAT compilers
- From: "Joseph S. Myers" <jsm28 at cam dot ac dot uk>
- To: <gcc at gcc dot gnu dot org>
- Date: Tue, 19 Mar 2002 19:21:01 +0000 (GMT)
- Subject: Re: patch for -Wno-long-long and early GNAT compilers
On 19 Mar 2002, Alexandre Oliva wrote:
> I can agree that this will be the end of the problem depending on the
> answer to my following question: how about 3.3? Are we going to try
> to make at least some effort to keep GCC GNAT buildable with any
> earlier releases of GCC supporting GNAT (i.e., 3.1), or as soon as 3.2
> is out, patches will soon find their way into the CVS tree that break
> bootstraps that start from 3.1?
Further to this point: currently the C compiler required to build non-C
front ends when building a cross-compiler is 2.95 or later; C features
added in 3.0 or later mustn't be required by front ends. Once 3.1
supporting Ada has been released; I think it's reasonable to require at
least 3.1 (as the first Ada-supporting GCC release) to build the Ada front
end in future releases - but we shouldn't move to a requirement of 3.2 as
a bootstrap compiler for Ada until we also think it reasonable for
building non-C front ends written in C. This means not until compilers
based on 3.1 are no longer in widespread use. (At present, 2.95 and
2.96-RH compilers are in widespread use for C, maybe more widespread than
3.0, and will continue to be in widespread use for some time.) I think
the "Debian stable uses 3.2 as the default C compiler" test would be
reasonable.
--
Joseph S. Myers
jsm28@cam.ac.uk