From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 90102 invoked by alias); 5 Jan 2017 08:58:15 -0000 Mailing-List: contact crossgcc-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: crossgcc-owner@sourceware.org Received: (qmail 90079 invoked by uid 89); 5 Jan 2017 08:58:12 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-4.1 required=5.0 tests=BAYES_00,KAM_LAZY_DOMAIN_SECURITY,RP_MATCHES_RCVD autolearn=ham version=3.3.2 spammy=H*r:6.0.3790.4675, 05012017, H*UA:0.9, 05.01.2017 X-HELO: mail.visionsystems.de Received: from mail.visionsystems.de (HELO mail.visionsystems.de) (213.209.99.202) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Thu, 05 Jan 2017 08:58:02 +0000 Received: from localhost (localhost [127.0.0.1]) by mail.visionsystems.de (Postfix) with ESMTP id D3AB8357B6B; Thu, 5 Jan 2017 09:58:00 +0100 (CET) Received: from mail.visionsystems.de ([127.0.0.1]) by localhost (mail.visionsystems.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 27112-10; Thu, 5 Jan 2017 09:58:00 +0100 (CET) Received: from visionsystems.de (kallisto.visionsystems.local [192.168.1.3]) by mail.visionsystems.de (Postfix) with ESMTP id A6320357B6A; Thu, 5 Jan 2017 09:58:00 +0100 (CET) Received: from [192.168.1.38] ([192.168.1.38]) by visionsystems.de with Microsoft SMTPSVC(6.0.3790.4675); Thu, 5 Jan 2017 09:57:59 +0100 Subject: Re: ldd for busybox compiled for arm To: Vered Zvi , ANDY KENNEDY , "crossgcc@sourceware.org" References: <1EFFBDE6584C794F8A0ADF2CAC8D60E09F909C3C@eltidex2.elta.co.il> <1EFFBDE6584C794F8A0ADF2CAC8D60E09F90A548@eltidex2.elta.co.il> From: Yegor Yefremov Message-ID: Date: Thu, 05 Jan 2017 08:58:00 -0000 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.8.1.24) Gecko/20100228 Lightning/0.9 Thunderbird/2.0.0.24 Mnenhy/0.7.6.666 MIME-Version: 1.0 In-Reply-To: <1EFFBDE6584C794F8A0ADF2CAC8D60E09F90A548@eltidex2.elta.co.il> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-SW-Source: 2017-01/txt/msg00003.txt.bz2 Hi Vered! do you need ldd on your host or on the target too? On target you can use: LD_TRACE_LOADED_OBJECTS=1 to get dependencies, so no need to cross-compile and install ldd. Yegor On 05.01.2017 04:34, Vered Zvi wrote: > Hi Andy, > > Thank you for the detailed reply. > > On the host I ran: > cross-compile-ldd /mydir/boot/rootfs/bin/sh > and got: > libm.so.6 => /lib/libm.so.6 (0xdeadbeef) > libc.so.6 => /lib/libc.so.6 (0xdeadbeef) > ld-linux-armhf.so.3 => /lib/ld-linux-armhf.so.3 (0xdeadbeef) > > same result for: > cross-compile-ldd /mydir/boot/rootfs/sbin/init > > I double checked that libm.so.6, libc.so.6 are in /lib > > On the host I ran: > file /mydir/boot/roots/bin/busybox > and got: > /mydir//boot/rootfs/bin/busybox: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=fc40d0187472069db3da93db4b30f9df92a75bbd, stripped > > Does it make sense ? > > On the host I tried to run /mydir/boot/rootfs/bin/ls. > It runs like the reguar host's ls > > Does it make sense ? > > I checked: > ./arm-cortex_a15-linux-gnueabihf-gcc -v > and got: > COLLECT_GCC=./arm-cortex_a15-linux-gnueabihf-gcc > ... > Target: arm-cortex_a15-linux-gnueabihf > > Using genext2fs I created a ram disk image from the folder that contains: > /boot /bin/ /sbin/ /usr ..... > > Upon boot the kernel displays the following error: > /sbin/init exists but couldn't execute it (error -8) > /bin/sh exists but couldn't execute it (error -8) > > Can you tell what can cause this error ? > Is it possible that the ramdisk image is not propery created ? > > Best regards, > Z.V > > ________________________________________ > From: ANDY KENNEDY [ANDY.KENNEDY@adtran.com] > Sent: Wednesday, January 04, 2017 10:18 PM > To: Vered Zvi; crossgcc@sourceware.org > Subject: RE: ldd for busybox compiled for arm > >> -----Original Message----- >> From: crossgcc-owner@sourceware.org [mailto:crossgcc-owner@sourceware.org] On Behalf Of Vered Zvi >> Sent: Tuesday, January 03, 2017 3:49 PM >> To: crossgcc@sourceware.org >> Subject: ldd for busybox compiled for arm >> >> >> Hello, > > Hi Vered! > >> >> Using crosstool-ng 1.22.0 I created a toolchain for: arm-cortex_a15-linux-gnueabi >> The host is Centos 7.2.1511 (64) >> >> Using this toolchain I compiled busybox. >> make ARCH=arm CROSS_COMPILE=../../../../toolchain/crosstool/release/bin/arm-cortex_a15-linux- >> gnueabihf- defconfig >> make ARCH=arm CROSS_COMPILE=../../../../toolchain/crosstool/release/bin/arm-cortex_a15-linux- >> gnueabihf- > > After doing this, you should have ended up with two files in the > local directory: busybox busybox_unstripped. > > What does "file" return to you for these two files. > >> >> Is it possible to use ldd from this toolchain to find out the dependencies for /bin/sh , /sbin/init >> ? >> >> Strange: both /bin/sh, /sbin/init run under x86. > > I would hope that to be the case. /bin/sh on the HOST should not have > been altered by the above steps. Now, if you mean that you attempted to > run these two commands on the target, this is different. On target, you > may have to run 'busybox install' to correctly configure the system with > the appropriate links. The file /bin/busybox on TARGET should be your > NEW busybox prior to executing the install. > > If you cannot execute your freshly built busybox on the system (busybox > without options will display the built-ins applets for busybox), you may > have linking issues. The trick there is that you would many of the libs > that come with the toolchain before this will work. If you are looking > to build a system without libraries, I suggest that you use BuildRoot > with an internal toolchain to build your busybox statically. > >> How it is possible ? >> They were compiled for ARM. >> >> Thank you, >> Z.V > > HTH! > > Andy > > The information contained in this communication is proprietary to Israel Aerospace Industries Ltd. and/or third parties, may contain confidential or privileged information, and is intended only for the use of the intended addressee thereof. If you are not the intended addressee, please be aware that any use, disclosure, distribution and/or copying of this communication is strictly prohibited. If you receive this communication in error, please notify the sender immediately and delete it from your computer. > >