Date: Tue, 7 Jul 2020 14:10:20 +0200
From: Natanael Copa <ncopa@alpinelinux.org>
To: "Alex Xu (Hello71)" <alex_y_xu@yahoo.ca>
Cc: ~alpine/devel@lists.alpinelinux.org
Subject: Re: Debug symbol compression
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On Thu, 02 Jul 2020 13:09:19 -0400
"Alex Xu (Hello71)" <alex_y_xu@yahoo.ca> wrote:

> Modern DWARF debugging sections can be compressed with zlib to save 
> storage. This is done using the gcc -gz or objcopy 
> --compress-debug-sections options.
> 
> Currently, Alpine does not compress debug sections. I think we should 
> consider doing so.
...
 
> == Conclusions ==
> 
> Overall, I think that once libunwind is bumped to 1.5, we should start 
> compressing debug sections. We shouldn't support old bundled versions of 
> gdb or libunwind, and the installed size benefit is substantial. In my 
> opinion, the speed difference is negligible compared to the size 
> benefits. If we switch to zstd apk format, then that will unfortunately 
> likely need to be reverted.

I think that makes sense. Lets bring it up again once libunwind 1.5 is
out and our package is updated.

> 
> [1] https://gitlab.alpinelinux.org/alpine/aports/-/issues/10896
> [2] https://github.com/schnaader/precomp-cpp