From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 2424 invoked by alias); 12 Apr 2012 01:15:55 -0000 Received: (qmail 2410 invoked by uid 22791); 12 Apr 2012 01:15:55 -0000 X-SWARE-Spam-Status: No, hits=-5.0 required=5.0 tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,KHOP_RCVD_TRUST,KHOP_THREADED,RCVD_IN_DNSWL_LOW,RCVD_IN_HOSTKARMA_YE,TW_FP,TW_VF X-Spam-Check-By: sourceware.org Received: from mail-ob0-f169.google.com (HELO mail-ob0-f169.google.com) (209.85.214.169) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 12 Apr 2012 01:15:41 +0000 Received: by obbup16 with SMTP id up16so1164785obb.0 for ; Wed, 11 Apr 2012 18:15:41 -0700 (PDT) MIME-Version: 1.0 Received: by 10.182.169.68 with SMTP id ac4mr720226obc.19.1334193340990; Wed, 11 Apr 2012 18:15:40 -0700 (PDT) Received: by 10.182.56.198 with HTTP; Wed, 11 Apr 2012 18:15:40 -0700 (PDT) In-Reply-To: References: <20120331103406.GA17776@einval.com> <201204100019.13472.vapier@gentoo.org> <4F83B5AD.3010302@redhat.com> <201204100033.08853.vapier@gentoo.org> <4F83B939.10205@redhat.com> <4F84AC96.6020500@redhat.com> <20120411010608.GC25263@einval.com> <20120411223755.GD25263@einval.com> Date: Thu, 12 Apr 2012 01:15:00 -0000 Message-ID: Subject: Re: Phone call (was Re: Armhf dynamic linker path) From: =?ISO-8859-1?Q?Paulo_C=E9sar_Pereira_de_Andrade?= To: Michael Hope Cc: Steve McIntyre , cross-distro@lists.linaro.org, Adam Conrad , linaro-toolchain@lists.linaro.org, gcc-patches@gcc.gnu.org, Jeff Law , libc-ports@sourceware.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-IsSubscribed: yes Mailing-List: contact libc-ports-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: libc-ports-owner@sourceware.org X-SW-Source: 2012-04/txt/msg00027.txt.bz2 Em 11 de abril de 2012 21:16, Michael Hope escrev= eu: > 2012/4/12 Paulo C=E9sar Pereira de Andrade > : >> Em 11 de abril de 2012 20:22, Michael Hope esc= reveu: >>> On 12 April 2012 10:38, Steve McIntyre wrot= e: >>>> On Wed, Apr 11, 2012 at 02:06:09AM +0100, Steve McIntyre wrote: >>>>> >>>>>And here's the details as promised. >>>>> >>>>>I've started a wiki page at >>>>> >>>>>https://wiki.linaro.org/OfficeofCTO/HardFloat/LinkerPathCallApr2012 >>>>> >>>>>with a strawman agenda for now, and a Doodle poll at >>>>> >>>>>http://www.doodle.com/93bitkqeb7auyxn7 >>>>> >>>>>to see when the best time is for the call on Thursday/Friday. Please >>>>>fill in the times that work for you ASAP and I'll announce the result >>>>>during Wednesday. Ideally we'd like stakeholders from all the relevant >>>>>distros and the upstream toolchain developers to be there, able to >>>>>represent their groups and (importantly) able to make a decision here >>>>>on what we should do. >>>>> >>>>>Apologies for the short notice, but we need a decision quickly. >>>> >>>> And the best time turns out to be Friday at 15:00 UTC (16:00 BST, >>>> 11:00 EDT etc.). Of the 10 people who responded in the poll, the only >>>> person who can't make that time is Michael in .nz. Sorry, Michael. >>> >>> All good. =A0My vote is for /lib/ld-arm-linux-gnueabihf.so.3 as it: >>> =A0* is similar to /lib/ld-x86-64.so.2 >>> =A0* keeps the libraries and loader in the same directory >>> =A0* doesn't invent a new /libhf directory >>> =A0* is easier to implement in GLIBC >>> =A0* is architecture and ABI unique >>> =A0* requires less change for distros where the hard float libraries are >>> already in /lib >> >> =A0Sorry for more bikeshedding, but afaik rpm based distros are >> using the armv7hl identifier, so it could as well be >> >> /lib/ld-linux-armv7hl.so.3 > > This includes the ABI (h), adds the endianess (l), and implies a > architecture level (v7). =A0The name for the most common configurations > should be as short as possible so I'd rather drop the 'l' and add a > 'b' or 'eb' if anyone wants a big endian distro in the future. =A0The > architecture level is a problem as the loader should also be valid on > ARMv5 and ARMv6 hard float builds. =A0Skype should be able to make a > hard float binary that runs on everything, including a potential ARMv6 > hard float RaspberryPi build. This means ld.so (and what else? a skype binary should not come fully statically linked) should be built with -march=3Darmv5te? That is, common denominator should be vfpv3-d16, ldrd/strd and thumb2 instruction set? AFAIK, for "user level", armv6 with vfp is effectively amv7 (sans armv7-r that has a div instruction in thumb mode). >> =A0Other variant could be >> >> /armv7hl-linux/lib/ld.so.3 > > This introduces both a new directory and a new style for naming :) Well, I said I was sorry for more bikeshedding :-) > -- Michael Paulo