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From: Ludovic Brenta <ludovic@ludovic-brenta.org>
Newsgroups: comp.lang.ada
Subject: Re: gnat : "ada.calendar.formatting" is not a predefined library
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Date: Sat, 26 Apr 2008 13:53:54 +0200
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Date: 2008-04-26T13:53:54+02:00
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Georg Bauhaus writes:
> Ludovic Brenta wrote:
>> Georg Bauhaus writes:
>>> 8.04 LTS has gnat-4.2.3 and libaws 2.2.
>> 
>> Which are ABI incompatible with each other.
>
> Looking more closely, libaws2.2 depends on libgnat-4.1.
> This is resolved by Debian's package system. (libaws2.2
> claims to depend on libldap2, too, which is not available
> with Ubuntu 8.04 LTS at this time.)

Talk about a "professional" distribution :)

> The unnumbered package "gnat" will install GNAT 4.2.3.

I don't know what Ubuntu changed to gcc-defaults but, in Debian, in
gcc-defaults version 1.64 I made gnat-4.3 the default on all
architectures; version 1.66 reverted to gnat-4.2 on alpha, mips and
mipsel without consulting with me, and 1.70 finally reverted that,
thereby completing the transition to gnat-4.3 as the default on all
architectures.

I never intended gnat-4.2 to be the default on any architecture and
Ubuntu diverges from Debian and risks breaking package dependencies.
So, at this point, I am forced to recommend against Ubuntu 8.04 for
Ada development.  Previous versions are OK since they follow the
policy for all Ada packages.  If you want a stable Ada development
platform, get Debian stable, which has "long term support" built in.

-- 
Ludovic Brenta.