From mboxrd@z Thu Jan 1 00:00:00 1970 From: "George Spelvin" Subject: Re: x86 SHA1: Faster than OpenSSL Date: 5 Aug 2009 14:17:55 -0400 Message-ID: <20090805181755.22765.qmail@science.horizon.com> References: <7vljlzjorh.fsf@alter.siamese.dyndns.org> Cc: git@vger.kernel.org, linux@horizon.com, torvalds@linux-foundation.org To: gitster@pobox.com X-From: git-owner@vger.kernel.org Wed Aug 05 20:18:10 2009 Return-path: Envelope-to: gcvg-git-2@gmane.org Received: from vger.kernel.org ([209.132.176.167]) by lo.gmane.org with esmtp (Exim 4.50) id 1MYl3u-0001DE-J1 for gcvg-git-2@gmane.org; Wed, 05 Aug 2009 20:18:07 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750810AbZHESR7 (ORCPT ); Wed, 5 Aug 2009 14:17:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750797AbZHESR6 (ORCPT ); Wed, 5 Aug 2009 14:17:58 -0400 Received: from science.horizon.com ([71.41.210.146]:28505 "HELO science.horizon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1749667AbZHESR6 (ORCPT ); Wed, 5 Aug 2009 14:17:58 -0400 Received: (qmail 22766 invoked by uid 1000); 5 Aug 2009 14:17:55 -0400 In-Reply-To: <7vljlzjorh.fsf@alter.siamese.dyndns.org> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: > Three classes of people compile git from the source: > > * People who want to be on the bleeding edge and compile git for > themselves, even though they are on mainstream platforms where they > could choose distro-packaged one; > > * People who produce binary packages for distribution. > > * People who are on minority platforms and have no other way to get git > than compiling for themselves; > > We do not have to worry about the first two groups of people. It won't > be too involved for them to install Perl on their system; after all they > are already coping with asciidoc and xmlto ;-) Actually, I'd get rid of the perl entirely, but I'm not sure how necessary the other-assembler-syntax features are needed by the folks on MacOS X and Windows (msysgit). > We can continue shipping mozilla one to help the last group. Of course, we always need a C fallback. Would you like a faster one? > In the Makefile, we say: > > # Define NO_OPENSSL environment variable if you do not have OpenSSL. > # This also implies MOZILLA_SHA1. > > and with your change, we would start implying STANDALONE_OPENSSL_SHA1 > instead. But if MOZILLA_SHA1 was given explicitly, we could use that. Well, I'd really like to auto-detect the processor. Current gcc's "gcc -v" output includes a "Target: " line that will do nicely. I can, of course, fall back to C if it fails, but is there a significant user base using a non-GCC compiler?