Re: Minimum required GNAT version for bootstrap of GNAT on gcc trunk

[Laurent GUERBY <laurent at guerby dot net>]

On Tue, 2009-02-24 at 20:40 +0100, Laurent GUERBY wrote:
> On Tue, 2009-02-24 at 19:36 +0000, Dave Korn wrote:
> > Laurent GUERBY wrote:
> > > On Tue, 2009-02-24 at 18:59 +0000, Dave Korn wrote:
> > >> Laurent GUERBY wrote:
> > >>
> > >>> I'm not sure 3.4 will work for trunk 
> > >>   I was just entirely unable to get 3.4.4 to bootstrap a 4.3.2 compiler.  I
> > >> used 4.3.0 and it worked.  I forget what I used to build the 4.3.0 with in the
> > >> first place.  I think the documentation needs updating to say you'll need to
> > >> use an early/intermediate 4.x version to bootstrap your way past the 3.x/4.x
> > >> boundary, but I couldn't say exactly where the break lies.
> > > 
> > > Was this on cygwin or Linux?
> > 
> >   Cygwin.  Would that be likely to make a difference?
> 
> Depending on the error it could make a difference. The oldest
> system I have access to is Ubuntu 5.10 which I believe
> came with 4.0 GCC default and optional 3.4 GCC packages (the system is
> offline right now so I rely on memory, I'll confirm
> when it comes back online).

The old system just came back online so I checked and GCC 3.4.6 (the
oldest version I have, released Mar 06 2006) is able to bootstrap c,ada
for 4.3.2 release (2008-08-27) on Linux i686.

So at least 3.4.x is able to build 4.3.x with Ada enabled on Linux.

I will build and test ability of 3.4.0 (released Apr 18 2004) to 5 to
bootstrap 4.3.x in the coming weeks.

Hope this helps,

Laurent