From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964777AbWGML6M (ORCPT ); Thu, 13 Jul 2006 07:58:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964778AbWGML6M (ORCPT ); Thu, 13 Jul 2006 07:58:12 -0400 Received: from coyote.holtmann.net ([217.160.111.169]:6858 "EHLO mail.holtmann.net") by vger.kernel.org with ESMTP id S964777AbWGML6L (ORCPT ); Thu, 13 Jul 2006 07:58:11 -0400 Subject: Re: Linker error with latest tree on EM64T From: Marcel Holtmann To: Arjan van de Ven Cc: jakub@redhat.com, linux-kernel@vger.kernel.org In-Reply-To: <1152788387.3024.32.camel@laptopd505.fenrus.org> References: <1152788160.4838.2.camel@localhost> <1152788387.3024.32.camel@laptopd505.fenrus.org> Content-Type: text/plain Date: Thu, 13 Jul 2006 13:58:02 +0200 Message-Id: <1152791882.4838.6.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.7.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi Arjan, > > when trying to build the latest tree on an EM64T Dual-Core, I am getting > > this error: > > > > LD .tmp_vmlinux1 > > init/built-in.o: In function `try_name': > > do_mounts.c:(.text+0x51d): undefined reference to `__stack_chk_fail' > > init/built-in.o: In function `name_to_dev_t': > > (.text+0x797): undefined reference to `__stack_chk_fail' > > init/built-in.o: In function `mount_block_root': > > (.init.text+0x823): undefined reference to `__stack_chk_fail' > > init/built-in.o: In function `md_run_setup': > > (.init.text+0x1131): undefined reference to `__stack_chk_fail' > > init/built-in.o: In function `do_header': > > initramfs.c:(.init.text+0x24a4): undefined reference to `__stack_chk_fail' > > arch/x86_64/kernel/built-in.o:(.text+0x2f52): more undefined references to `__st > > ack_chk_fail' follow > > make: *** [.tmp_vmlinux1] Error 1 > > you are using ubuntu which has a compiler that adds -fstack-protector > implicitly to the compiler options, yet you don't have a kernel that > provides this infrastructure ;) > (I have code for that but it's not merged yet, it's pending one gcc > patch to get merged upstream) > in the mean time.. I'm pretty sure Sam sent a patch to Linus that adds > -fno-stack-protector... I couldn't find such a patch in Sam's repository, but the following worked for me: diff --git a/Makefile b/Makefile index 7c010f3..b4a2a80 100644 --- a/Makefile +++ b/Makefile @@ -308,7 +308,7 @@ LINUXINCLUDE := -Iinclude \ CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE) CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ - -fno-strict-aliasing -fno-common + -fno-strict-aliasing -fno-common -fno-stack-protector # Force gcc to behave correct even for buggy distributions CFLAGS += $(call cc-option, -fno-stack-protector-all \ -fno-stack-protector) Thanks for the quick answer. Regards Marcel