[bitbake-devel] [PATCH 0/1] Add support for 7-Zip compressed files

[Paul Eggleton]

On Mon, 04 Jan 2016 14:35:41 Mark Hatle wrote:
> On 1/4/16 12:51 PM, Juro Bystricky wrote:
> > 7-Zip offers substantially better compression than other compression
> > formats. In fact, 7-Zip explicitly claims it provides the best compression
> > ratio. To quickly test the claim, I compressed a gcc 5.2 538.8 MB tree
> > snapshot in various ways:
> > 
> > tar.bz2: 114.0 MB
> > tar.gz:  112.4 MB
> > tar.7z:   70.3 MB
> 
> I thought 7z was an archive format, that included compression information.
> 
> Since the compression that makes 7z better then bz2 is lzma, and 'xz' uses
> lzma as it's compression format.  (In my experience, .xz is really common
> on Linux -- 7z is only common on Windows.)
> 
> I'm not saying don't support .7z, but adding support for .tar.xz and others
> would make equal sense to me.  (There are a number of formats out there that
> could and likely should be added.)

We already support tar.xz FYI (and use it within the metadata quite a lot).

Cheers,
Paul

-- 

Paul Eggleton
Intel Open Source Technology Centre