From: Richard Earnshaw <rearnsha@arm.com>
To: Olivier Galibert <galibert@pobox.com>
Cc: Gabriel Dos Reis <gdr@integrable-solutions.net>,
Richard.Earnshaw@arm.com, Rupert Wood <me@rupey.net>,
gcc@gcc.gnu.org
Subject: Re: Putting C++ code into gcc front end
Date: Tue, 04 Mar 2003 15:19:00 -0000 [thread overview]
Message-ID: <200303041511.h24FBO325654@pc960.cambridge.arm.com> (raw)
In-Reply-To: Your message of "Tue, 04 Mar 2003 10:06:16 EST." <20030304100616.A27379@kerberos.ncsl.nist.gov>
> On Tue, Mar 04, 2003 at 03:52:57PM +0100, Gabriel Dos Reis wrote:
> > On this issue, in my opinion, we should proceed in steps.
> > I believe R.'s approach is a fair first step. Let's make the C++
> > front-end compilable by ISO C90 compilers. Then we'll tackle the next
> > issue in due time.
>
> But if the C++ front-end requires ISO C90, then you'll need the 4 (or
> 3, depending on how you count) passes bootstrap for java anyway.
> Either you downgrade the C++ front-end all the way back to K&R or
> there is no need to bother since you'll have to do the first compile
> with the pass1 xgcc anyway.
>
> You have a limited number of possibilities here:
> - go 4-pass for java
> - downgrade the c++ frontend all the way to the C front-end required
> level, ie K&R
> - change the c++ frontend back to ISO C _and_ upgrade the requirements
> to ISO C
>
> Moving the C++ frontend to iso C without upgrading the requirements
> won't do.
The vast majority of the world now has ISO C (the main exception is the
bundled HPUX compiler); this doesn't have to be GCC, just ISO C. So most
of the world would be able to build C++ during stage1 of the bootstrap
(rather than in stages 2 & 3).
For those with only a K+R compiler we wouldn't cut them off entirely, we'd
just say that you have to build GCC's C compiler first (stage0).
So yes, it is 4-stage, but only if you start out with a K+R compiler.
R.
next prev parent reply other threads:[~2003-03-04 15:11 UTC|newest]
Thread overview: 134+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <616BE6A276E3714788D2AC35C40CD18DAD4FC1@whale.softwire.co.uk>
2003-03-04 11:55 ` Rupert Wood
2003-03-04 12:11 ` Richard Earnshaw
2003-03-04 12:46 ` Gabriel Dos Reis
2003-03-04 13:57 ` Olivier Galibert
2003-03-04 14:21 ` Lars Segerlund
2003-03-04 14:33 ` Richard Earnshaw
2003-03-04 14:46 ` Olivier Galibert
2003-03-04 14:53 ` Richard Earnshaw
2003-03-04 15:03 ` Gabriel Dos Reis
2003-03-04 15:11 ` Olivier Galibert
2003-03-04 15:19 ` Richard Earnshaw [this message]
2003-03-04 15:26 ` Gabriel Dos Reis
2003-03-04 16:30 ` Kaveh R. Ghazi
2003-03-04 17:17 ` Steven Bosscher
2003-03-04 17:41 ` Phil Edwards
2003-03-04 18:37 ` Daniel Berlin
2003-03-05 10:51 ` Joseph S. Myers
2003-03-05 18:48 ` Mark Mitchell
2003-03-04 17:33 ` Zack Weinberg
2003-03-04 17:53 ` Phil Edwards
2003-03-04 20:50 ` Geoff Keating
2003-03-04 21:01 ` Gabriel Dos Reis
2003-03-04 22:03 ` Geoff Keating
2003-03-04 22:49 ` Michael Matz
2003-03-04 23:07 ` Gareth Pearce
2003-03-05 2:13 ` Michael S. Zick
2003-03-05 2:19 ` Gareth Pearce
2003-03-05 0:50 ` Diego Novillo
2003-03-04 18:26 ` Geert Bosch
2003-03-04 21:48 ` Michael Matz
2003-03-05 2:55 ` Mark Mitchell
2003-03-04 13:52 ` Nathan Sidwell
2003-03-04 14:22 ` Richard Earnshaw
2003-03-04 16:40 ` Nathan Sidwell
2003-03-04 18:18 ` Dale Johannesen
2003-03-04 19:25 ` Richard Earnshaw
2003-03-05 16:51 ` Marc Espie
2003-03-05 18:42 ` Dale Johannesen
2003-03-08 19:23 Robert Dewar
-- strict thread matches above, loose matches on Subject: below --
2003-03-08 19:00 Robert Dewar
2003-03-06 20:36 Nathanael Nerode
2003-03-06 20:23 Tim Josling
2003-03-06 17:17 Joern Rennecke
2003-03-06 18:25 ` Richard Earnshaw
2003-03-07 19:04 ` Toon Moene
2003-03-05 23:03 Robert Dewar
2003-03-06 7:18 ` Gabriel Dos Reis
2003-03-06 7:53 ` Karel Gardas
2003-03-06 9:17 ` Gabriel Dos Reis
2003-03-06 17:25 ` Alexandre Oliva
2003-03-06 22:23 ` Michael Matz
2003-03-06 22:30 ` Karel Gardas
2003-03-06 22:52 ` Gabriel Dos Reis
2003-03-06 23:31 ` Michael Matz
2003-03-05 22:42 Chris Lattner
2003-03-05 21:07 Benjamin Kosnik
2003-03-05 22:18 ` Zack Weinberg
2003-03-06 9:13 ` Olivier Galibert
2003-03-06 11:08 ` Richard Earnshaw
2003-03-06 17:27 ` Alexandre Oliva
2003-03-05 16:20 Robert Dewar
2003-03-05 16:31 ` Gabriel Dos Reis
2003-03-05 18:52 ` Matt Austern
2003-03-05 21:20 ` Toon Moene
2003-03-05 21:28 ` tm_gccmail
2003-03-05 21:29 ` Fabio Alemagna
2003-03-05 22:12 ` Karel Gardas
2003-03-06 12:39 ` Andrew Haley
2003-03-06 7:58 ` Lars Segerlund
2003-03-06 11:47 ` Vladimir Merzliakov
2003-03-05 4:27 Robert Dewar
2003-03-05 7:00 ` Zack Weinberg
2003-03-05 7:57 ` Gabriel Dos Reis
2003-03-05 19:18 ` Mike Stump
2003-03-04 18:14 Nathanael Nerode
2003-03-04 18:21 ` Zack Weinberg
2003-03-04 18:28 ` Geert Bosch
2003-03-04 19:35 ` Zack Weinberg
2003-03-04 17:55 Benjamin Kosnik
2003-03-04 20:02 ` Matt Austern
2003-03-04 20:08 ` Gareth Pearce
2003-03-04 21:50 ` Michael Matz
2003-03-05 8:48 ` Lars Segerlund
2003-03-05 9:40 ` Tom Lord
2003-03-04 22:02 ` Gabriel Dos Reis
2003-03-04 17:30 Benjamin Kosnik
2003-03-04 17:29 Benjamin Kosnik
2003-03-04 16:56 Nathanael Nerode
2003-03-04 10:19 Nathanael Nerode
2003-03-04 10:23 ` Gabriel Dos Reis
2003-03-04 11:20 ` Pop Sébastian
2003-03-04 12:42 ` Gabriel Dos Reis
2003-03-04 9:53 Nathanael Nerode
2003-03-04 10:06 ` Gabriel Dos Reis
2003-03-04 11:25 ` Andreas Schwab
2003-03-04 3:06 Tom Tromey
2003-03-04 5:45 ` Gabriel Dos Reis
2003-03-05 0:54 ` Mike Stump
2003-03-04 7:01 ` Zack Weinberg
2003-03-04 7:12 ` Gabriel Dos Reis
2003-03-04 7:54 ` Zack Weinberg
2003-03-04 9:20 ` Gabriel Dos Reis
2003-03-04 17:35 ` Zack Weinberg
2003-03-04 15:05 ` Michael Matz
2003-03-04 15:06 ` Gabriel Dos Reis
2003-03-04 15:08 ` Lars Segerlund
2003-03-04 15:12 ` Gabriel Dos Reis
2003-03-04 15:33 ` Lars Segerlund
2003-03-04 15:58 ` Gabriel Dos Reis
2003-03-04 16:01 ` Olivier Galibert
2003-03-04 16:09 ` Kaveh R. Ghazi
2003-03-04 16:49 ` Nathan Sidwell
2003-03-04 17:18 ` Zack Weinberg
2003-03-04 21:46 ` Michael Matz
2003-03-04 17:20 ` Andrew Haley
2003-03-04 17:36 ` Tom Tromey
2003-03-06 14:59 ` Fergus Henderson
2003-03-07 3:51 ` Per Bothner
2003-03-07 13:39 ` Pop Sébastian
2003-03-07 20:41 ` Neil Booth
2003-03-07 20:49 ` Per Bothner
2003-03-07 21:52 ` Geoff Keating
2003-03-07 21:57 ` Per Bothner
2003-03-07 22:55 ` Neil Booth
2003-03-07 22:57 ` Geoff Keating
2003-03-07 23:05 ` tm_gccmail
2003-03-07 23:24 ` law
2003-03-07 23:07 ` Neil Booth
2003-03-07 23:09 ` Geert Bosch
2003-03-07 23:19 ` Neil Booth
2003-03-08 0:37 ` Steven Bosscher
2003-03-08 2:09 ` Laurent Guerby
2003-03-08 15:27 ` Toon Moene
2003-03-07 20:13 ` Joseph S. Myers
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