Fwd: Re: debian/*.symbols files for C++ libraries

[Scott Kitterman]

FYI for anyone not on debian-devel.

Scott K

----------  Forwarded Message  ----------

Subject: Re: debian/*.symbols files for C++ libraries
Date: Saturday, February 29, 2020, 10:33:01 AM EST
From: Mike Gabriel <mike.gabriel at das-netzwerkteam.de>
To: Scott Kitterman <debian at kitterman.com>
CC: debian-devel at lists.debian.org

Hi Scott, hi KDE team

On  Mo 17 Feb 2020 22:32:18 CET, Scott Kitterman wrote:

> On February 17, 2020 9:23:39 PM UTC, Mike Gabriel  
> <mike.gabriel at das-netzwerkteam.de> wrote:
>> Hi all,
>>
>> (please Cc: me when replying. Thanks.)
>>
>> I'd like to warm up an old topic regarding creation of *.symbols files
>>
>> for shared libraries implemented in C++.
>>
>> I have followed all links in [1] and esp. read Russ Alberries
>> experiment results [2,3]. All writing are quite old and I wonder if
>> something new has come up meanwhile (improved tool chains, etc).
>>
>> Until now, I mostly avoided writing .symbols files for C++ shared libs.
>>
>> However, here comes the question: How do people handle .symbols files
>> these days if they originate from C++ code? How do people make sure
>> the .symbols files are correct for all supported architectures? What
>> tool chains are used? Are there other good reads about the topic?
>>
>> My current context: I want to fix various build failures of lib-cpp
>> related packages relevant for upcoming Unity8.
>>
>> Thanks + Greets,
>> Mike
>>
>> [1] https://wiki.debian.org/UsingSymbolsFiles
>> [2] https://www.eyrie.org/~eagle/journal/2012-01/008.html
>> [3] https://www.eyrie.org/~eagle/journal/2012-02/001.html
>
> Here's what the QT/KDE team use:
>
> https://qt-kde-team.pages.debian.net/symbolfiles.html
>
> https://manpages.debian.org/testing/pkg-kde-tools/pkgkde-symbolshelper.
1.en.html
>
> I've used it for other C++ packages with pretty good success.

I have updated some of my C++ pkgs with .symbols files and it works  
like charme. I tried the pkg-kde-tools at an earlier point (several  
years ago) and wasn't happy with it.

But I am now. Thanks to all pkg-kde-tools hackers for the symbols  
helper. Much appreciated.

light+love
Mike

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