From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=0.4 required=5.0 tests=BAYES_00,FORGED_MUA_MOZILLA
	autolearn=no autolearn_force=no version=3.4.4
X-Google-Thread: 103376,e56fd2619c02e35a
X-Google-NewGroupId: yes
X-Google-Attributes: gida07f3367d7,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Received: by 10.68.8.229 with SMTP id u5mr28463042pba.0.1317129922791;
        Tue, 27 Sep 2011 06:25:22 -0700 (PDT)
Path: 
 lh7ni5979pbb.0!nntp.google.com!news1.google.com!news3.google.com!feeder1-2.proxad.net!proxad.net!feeder2-2.proxad.net!newsfeed.arcor.de!newsspool2.arcor-online.net!news.arcor.de.POSTED!not-for-mail
Date: Tue, 27 Sep 2011 15:25:20 +0200
From: Georg Bauhaus <rm.dash-bauhaus@futureapps.de>
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6;
 rv:6.0.2) Gecko/20110902 Thunderbird/6.0.2
MIME-Version: 1.0
Newsgroups: comp.lang.ada
Subject: Re: 64 bit codes
References: <j5rs8s$9fk$1@news.albasani.net>
 <4e817fdb$0$7615$9b4e6d93@newsspool1.arcor-online.net>
 <j5s3iu$olh$1@news.albasani.net>
 <213da3b7-f9d0-4a7d-b215-9992ee0f1a02@f6g2000vbm.googlegroups.com>
 <j5s6gr$ufu$1@news.albasani.net>
 <2a797a9e-f0e3-4fbe-8f40-b6787b4e2879@o11g2000yqc.googlegroups.com>
 <j5sbjm$a2v$1@news.albasani.net>
 <e47de46f-b582-47f4-a8de-c95e9eb46e51@fx14g2000vbb.googlegroups.com>
In-Reply-To: 
 <e47de46f-b582-47f4-a8de-c95e9eb46e51@fx14g2000vbb.googlegroups.com>
Message-ID: <4e81cec1$0$6580$9b4e6d93@newsspool3.arcor-online.net>
Organization: Arcor
NNTP-Posting-Date: 27 Sep 2011 15:25:21 CEST
NNTP-Posting-Host: 5d601b98.newsspool3.arcor-online.net
X-Trace: 
 DXC=YW^E]nbM]PN^B]`=U:WelBMcF=Q^Z^V3H4Fo<]lROoRA8kF<OcfhCOKlmQ:I4Z0CPInc\616M64>JLh>_cHTX3jM``j937Q`GWC
X-Complaints-To: usenet-abuse@arcor.de
Xref: news1.google.com comp.lang.ada:18164
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Date: 2011-09-27T15:25:21+02:00
List-Id: <comp.lang.ada>

On 27.09.11 15:09, Ludovic Brenta wrote:

> No, there is more to it than that.  Given that most of GNAT is written
> in Ada, one requires a 64-bit Ada compiler to produce the first 64-bit
> Ada compiler;

This will make the compiler itself be 64bit executables;
If I just want a compiler to produce 64bit executables,
any compiler will do:

$ arch
i386
$ file $(which gcc-4.0)
/usr/bin/gcc-4.0: Mach-O universal binary with 2 architectures
/usr/bin/gcc-4.0 (for architecture i386):	Mach-O executable i386
/usr/bin/gcc-4.0 (for architecture ppc7400):	Mach-O executable ppc
$ gcc-4.0 -m64 foo.c
$ file a.out
a.out: Mach-O 64-bit executable x86_64
$ ./a.out
-bash: ./a.out: Bad CPU type in executable

A 64bit compiler is not needed, just as none needs to run on a JVM
in order to produce Java byte code.
OTOH, I understand that the GNAT front end interact with the GCC
internals in non-trivial ways.