From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757602AbYEWLJ0 (ORCPT ); Fri, 23 May 2008 07:09:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753211AbYEWLJT (ORCPT ); Fri, 23 May 2008 07:09:19 -0400 Received: from gate.crashing.org ([63.228.1.57]:57549 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753016AbYEWLJS (ORCPT ); Fri, 23 May 2008 07:09:18 -0400 In-Reply-To: <20080523011213.690363c7.akpm@linux-foundation.org> References: <48313D8E.7020109@de.ibm.com> <20080523011213.690363c7.akpm@linux-foundation.org> Mime-Version: 1.0 (Apple Message framework v623) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, Peter Oberparleiter , Peter Oberparleiter , Sam Ravnborg , ltp-coverage@lists.sourceforge.net From: Segher Boessenkool Subject: Re: [PATCH 0/7] gcov kernel support Date: Fri, 23 May 2008 13:06:00 +0200 To: Andrew Morton X-Mailer: Apple Mail (2.623) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >> This is version #2 of the gcov kernel support patch set > > powerpc blew up: > > /opt/crosstool/gcc-4.1.0-glibc-2.3.6/powerpc64-unknown-linux-gnu/lib/ > gcc/powerpc64-unknown-linux-gnu/4.1.0/../../../../powerpc64-unknown- > linux-gnu/bin/ld: skipping incompatible > /opt/crosstool/gcc-4.1.0-glibc-2.3.6/powerpc64-unknown-linux-gnu/lib/ > gcc/powerpc64-unknown-linux-gnu/4.1.0/./libgcov.a when searching for > -lgcov > /opt/crosstool/gcc-4.1.0-glibc-2.3.6/powerpc64-unknown-linux-gnu/lib/ > gcc/powerpc64-unknown-linux-gnu/4.1.0/../../../../powerpc64-unknown- > linux-gnu/bin/ld: cannot find -lgcov > collect2: ld returned 1 exit status > make[2]: *** [arch/powerpc/kernel/vdso32/vdso32.so.dbg] Error 1 > make[1]: *** [arch/powerpc/kernel/vdso32] Error 2 Sounds like your toolchain was built without biarch support, but you're using it for the 32-bit parts of the kernel anyway. Which works as long as you're not using any libraries, but now you need libgcov.a . What does /opt/crosstool/gcc-4.1.0-glibc-2.3.6/powerpc64-unknown-linux-gnu/bin/ powerpc64-unknown-linux-gnu-gcc -v say? (Or whatever the correct path to that compiler is, the directory structure is a bit unusual here it seems). There shouldn't be a --disable-biarch there. Or, what does find /opt/crosstool/gcc-4.1.0-glibc-2.3.6/powerpc64-unknown-linux-gnu/4.1.0/ -name libgcov.a say? (It should usually find three versions: 64-bit, 32-bit, 32-bit no float). You *can* build with a non-biarch compiler, but then you need to point the kernel build system at a 32-bit toolchain to use for the 32-bit parts (via CROSS32_COMPILE). Segher