From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Subject: Re: [PATCH 4/6] Add support for LZO-compressed kernels for ARM Date: Fri, 07 Aug 2009 13:21:39 -0700 Message-ID: <4A7C8CD3.1090404@zytor.com> References: <1249311501-23102-3-git-send-email-albin.tonnerre@free-electrons.com> <1249311501-23102-4-git-send-email-albin.tonnerre@free-electrons.com> <20090806224055.GH31579@n2100.arm.linux.org.uk> <20090807092423.GA4455@laptop> <4A7BF5B8.4030907@knaff.lu> <20090807102117.GB4455@laptop> <4A7C14EB.1060701@parrot.com> <20090807130130.GE4455@laptop> <4A7C2BA4.7030408@parrot.com> <20090807135524.GF4455@laptop> <20090807200001.GE31543@n2100.arm.linux.org.uk> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20090807200001.GE31543@n2100.arm.linux.org.uk> Sender: linux-embedded-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Russell King - ARM Linux Cc: Albin Tonnerre , Matthieu CASTET , Alain Knaff , "sam@ravnborg.org" , "linux-kernel@vger.kernel.org" , "linux-embedded@vger.kernel.org" , "akpm@linux-foundation.org" On 08/07/2009 01:00 PM, Russell King - ARM Linux wrote: > On Fri, Aug 07, 2009 at 03:55:24PM +0200, Albin Tonnerre wrote: >> That's true for the actual kernel image, but not for the bootstrap code we use >> when compiling compressed kernels. arch/arm/boot/compressed/Makefile uses >> libgcc, unless I'm overlooking something here: >> >> arm-unknown-linux-uclibcgnueabi-ld -EL --defsym zreladdr=0x20008000 >> --defsym initrd_phys=0x20410000 --defsym params_phys=0x20000100 -p >> --no-undefined -X >> /home/albin/x-tools/arm-unknown-linux-uclibcgnueabi/lib/gcc/arm-unknown-linux-uclibcgnueabi/4.3.2/libgcc.a >> -T arch/arm/boot/compressed/vmlinux.lds arch/arm/boot/compressed/head.o >> arch/arm/boot/compressed/piggy.gzip.o arch/arm/boot/compressed/misc.o -o >> arch/arm/boot/compressed/vmlinux > > It's because libgcc appears in the wrong place in the command line, and > due to the way kbuild works, we can't get it into the right place easily. > > Linkers are sensitive to the order of archives on the command line - its > pointless having an archive as the first file argument because none of > the contained objects will ever be pulled in. > > Sam - any ideas how to solve this? Can we use the group feature of ld for this? -hpa