[RFC] Minimal Debuginfo by default

[RFC] Minimal Debuginfo by default

[Yaakov Selkowitz]

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The following concept would allow for sensible backtraces without
installing a -debuginfo, at the expense of a moderate size increase of
binaries (particularly with C++ code):

https://fedoraproject.org/wiki/Changes/MingwMiniDebugInfo

The patch for cygport would be minimal.  Is it worth the size increase?

-- 
Yaakov


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Re: [RFC] Minimal Debuginfo by default

[David Stacey]

On 15/11/17 07:38, Yaakov Selkowitz wrote:
> The following concept would allow for sensible backtraces without
> installing a -debuginfo, at the expense of a moderate size increase of
> binaries (particularly with C++ code):
>
> https://fedoraproject.org/wiki/Changes/MingwMiniDebugInfo

Did you mean https://fedoraproject.org/wiki/Features/MiniDebugInfo 
Presumably you intend this for Cygwin binaries.

> The patch for cygport would be minimal.  Is it worth the size increase?

The benefit to Fedora is obvious, in that it would increase the quality 
of the automated bug reports. Do we have an equivalent in Cygwin (or is 
one planned)? Right now, we don't have so many backtraces sent in to the 
main list, but who knows - if they were easier to generate then we might.

How would this work for Cygwin? Would we require all the lib.* packages 
to be rebuilt?

Dave.

Re: [RFC] Minimal Debuginfo by default

[Yaakov Selkowitz]

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On 2017-11-15 03:09, David Stacey wrote:
> On 15/11/17 07:38, Yaakov Selkowitz wrote:
>> The following concept would allow for sensible backtraces without
>> installing a -debuginfo, at the expense of a moderate size increase of
>> binaries (particularly with C++ code):
>>
>> https://fedoraproject.org/wiki/Changes/MingwMiniDebugInfo
> 
> Did you mean https://fedoraproject.org/wiki/Features/MiniDebugInfo
> Presumably you intend this for Cygwin binaries.

Yes, but as we're not an ELF platform, I doubt we support the method
used to implement MiniDebugInfo, so the implementation would be closer
to MingwMiniDebugInfo.

>> The patch for cygport would be minimal.  Is it worth the size increase?
> 
> The benefit to Fedora is obvious, in that it would increase the quality
> of the automated bug reports. Do we have an equivalent in Cygwin (or is
> one planned)? Right now, we don't have so many backtraces sent in to the
> main list, but who knows - if they were easier to generate then we might.
> 
> How would this work for Cygwin? Would we require all the lib.* packages
> to be rebuilt?

Not immediately, but I do think we are getting to the point where we
really need a mass rebuild anyway.  Therefore, I'm trying to queue up
now any changes of such scope.

-- 
Yaakov


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Re: [RFC] Minimal Debuginfo by default

[Jon Turney]

On 15/11/2017 07:38, Yaakov Selkowitz wrote:
> The following concept would allow for sensible backtraces without
> installing a -debuginfo, at the expense of a moderate size increase of
> binaries (particularly with C++ code):
> 
> https://fedoraproject.org/wiki/Changes/MingwMiniDebugInfo
> 
> The patch for cygport would be minimal.  Is it worth the size increase?

Unrelated, but we should probably also turn back on 
--compress-debug-sections for debuginfo packages, since we should now 
have a binutils where this works...