From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail5.wrs.com (mail5.windriver.com [192.103.53.11]) by mail.openembedded.org (Postfix) with ESMTP id CA2827317E for ; Mon, 4 Jan 2016 20:35:43 +0000 (UTC) Received: from ALA-HCA.corp.ad.wrs.com (ala-hca.corp.ad.wrs.com [147.11.189.40]) by mail5.wrs.com (8.15.2/8.15.2) with ESMTPS id u04KZh66002916 (version=TLSv1 cipher=AES128-SHA bits=128 verify=OK); Mon, 4 Jan 2016 12:35:43 -0800 Received: from Marks-MacBook-Pro.local (172.25.36.231) by ALA-HCA.corp.ad.wrs.com (147.11.189.50) with Microsoft SMTP Server id 14.3.248.2; Mon, 4 Jan 2016 12:35:43 -0800 To: Juro Bystricky , References: <1451933503-25881-1-git-send-email-juro.bystricky@intel.com> From: Mark Hatle Organization: Wind River Systems Message-ID: <568AD79D.80307@windriver.com> Date: Mon, 4 Jan 2016 14:35:41 -0600 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 MIME-Version: 1.0 In-Reply-To: <1451933503-25881-1-git-send-email-juro.bystricky@intel.com> Cc: richard.purdie@intel.com Subject: Re: [PATCH 0/1] Add support for 7-Zip compressed files X-BeenThere: bitbake-devel@lists.openembedded.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Patches and discussion that advance bitbake development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 Jan 2016 20:35:44 -0000 Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit 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.) --Mark > At present, there is no support for 7-Zip compressed files in Bitbake. > Various public Git repositories only allow pushing files of certain max size, > AFAIK Github only allows 100MB, so there are cases where it is desirable > to use maximum compression possible. > > > Juro Bystricky (1): > bitbake:fetch2/__init__.py: Add support for 7-Zip > > bitbake/lib/bb/fetch2/__init__.py | 4 ++++ > 1 file changed, 4 insertions(+) >