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=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Thread: a07f3367d7,fea50f781bb229dc
X-Google-Attributes: gida07f3367d7,public,usenet
X-Google-NewGroupId: yes
X-Google-Language: ENGLISH,UTF8
Path: 
 g2news2.google.com!news4.google.com!feeder.news-service.com!85.214.198.2.MISMATCH!eternal-september.org!.POSTED!not-for-mail
From: Ludovic Brenta <ludovic@ludovic-brenta.org>
Newsgroups: comp.lang.ada
Subject: Re: About static libraries and Debian policy
Date: Fri, 14 May 2010 22:38:30 +0200
Organization: A noiseless patient Spider
Message-ID: <87d3wydxrt.fsf@ludovic-brenta.org>
References: <xpapqc7al1kx$.10dcevapcbh68.dlg@40tude.net>
	<85f51aeb-cac9-4591-921a-a7f50c8ef142@a21g2000yqn.googlegroups.com>
	<1pup1z7a4f1pq$.of30sejrqe4m.dlg@40tude.net>
	<87hbmae33k.fsf@ludovic-brenta.org>
	<1qlmof1bv2m4t.6suzc7ieyv1j$.dlg@40tude.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit
Injection-Date: Fri, 14 May 2010 20:38:30 +0000 (UTC)
Injection-Info: mx03.eternal-september.org;
 posting-host="/mzWyyXLUrcvNJjegNdd9g";
	logging-data="27718"; mail-complaints-to="abuse@eternal-september.org";
	posting-account="U2FsdGVkX1+O0MrUWP6SdnMdJ8EzENf8"
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux)
Cancel-Lock: sha1:W6HV2OhcVhu45BKdnMMGM+I/48w=
	sha1:rYLUjOZ4Rp3k53tMeps3eq51ne4=
Xref: g2news2.google.com comp.lang.ada:11620
Date: 2010-05-14T22:38:30+02:00
List-Id: <comp.lang.ada>

Dmitry A. Kazakov writes:
> On Fri, 14 May 2010 20:43:27 +0200, Ludovic Brenta wrote:
>
>> § 5.3.3 Ada object files [...]
>> Rule: The -dev package SHALL provide a static library in
>> /usr/lib/libLIBRARY.a.
>
> OK.
>
>>>>> BTW, Why there should be no traceback when relocatable libraries are
>>>>> used?
>> 
>> Traceback is always available, either in symbolic or numeric form.  To
>> get the symbolic form, you need the -dbg package installed.
>
> I meant g-trasym.adb. In Fedora's gcc 4.4 it is in the static library, but
> absent in the shared. I don't understand why.

Maybe the Fedora maintainers can explain?

>>> Maybe, but other shared libraries can well be compiled with -g as well
>>> as the application. But linking them with shared RTL fails if any of
>>> them uses Traceback.Symbolic.
>> 
>> That's because GNAT GPL includes a non-standard 'libaddr2line.a'
>> produced from binutils (and therefore pure GPL) and calls that to
>> produce the symbolic tracebacks.  GCC (from the FSF) lacks this library.
>> I patched GCC to use an alternate mechanism instead, i.e. fork()/exec()
>> and call /usr/bin/addr2line.  This restores the functionality in the FSF
>> version of GNAT.
>
> Does it mean that under Debian g-trasym.adb is in both libraries?

Yes.  And they Just Work(tm) as they should :)

-- 
Ludovic Brenta.