From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QmP8o-00021w-L8 for barebox@lists.infradead.org; Thu, 28 Jul 2011 11:52:40 +0000 Date: Thu, 28 Jul 2011 13:52:34 +0200 From: Sascha Hauer Message-ID: <20110728115234.GV20587@pengutronix.de> References: <4E2EC796.7070408@googlemail.com> <4E2ECD3A.1060509@pengutronix.de> <4E2FB2D8.4000306@googlemail.com> <4E2FDF54.6000804@googlemail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <4E2FDF54.6000804@googlemail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: barebox compilation with gcc 4.5.2 and ptxdist To: Andre Naujoks Cc: barebox@lists.infradead.org On Wed, Jul 27, 2011 at 11:50:12AM +0200, Andre Naujoks wrote: > Am 27.07.2011 08:40, schrieb Andre Naujoks: > > Am 26.07.2011 16:20, schrieb Marc Kleine-Budde: > >> On 07/26/2011 03:56 PM, Andre Naujoks wrote: > >>> Hello. > >>> > >>> We are currently trying to compile a barebox with the git version of > >>> ptxdist and the git version of the OSELAS generic Toolchain for powerpc. > >>> > >>> Also the current 2011.07.0 release of barebox. > >>> > >>> We are having some problems during the build, which I think are a result > >>> of some changes in gcc's optimizations (since 4.4.something). GCC uses > >>> some functions on the ppc platform to optimze the size of the resulting > >>> binary, which are only present in the libgcc.a. > >>> > >>> The compile stage works fine up tp the last linker step: > >>> > >>> CC arch/ppc/lib/time.o > >>> AS arch/ppc/lib/misc.o > >>> CC arch/ppc/lib/ppclinux.o > >>> CC arch/ppc/lib/board_data.o > >>> LD arch/ppc/lib/built-in.o > >>> LD barebox > >>> common/built-in.o: In function `mapset': > >>> hush.c:(.text.mapset+0x44): undefined reference to `_restgpr_30_x' > >>> common/built-in.o: In function `syntax_err': > >>> hush.c:(.text.syntax_err+0x34): undefined reference to `_restgpr_30_x' > >>> common/built-in.o: In function `done_command': > >>> hush.c:(.text.done_command+0x94): undefined reference to `_restgpr_29_x' > >>> common/built-in.o: In function `done_pipe': > >>> hush.c:(.text.done_pipe+0x5c): undefined reference to `_restgpr_29_x' > >>> common/built-in.o: In function `is_assignment': > >>> hush.c:(.text.is_assignment+0x8c): undefined reference to `_restgpr_27_x' > >>> common/built-in.o: In function `b_addchr': > >>> hush.c:(.text.b_addchr+0x8c): undefined reference to `_restgpr_28_x' > >>> common/built-in.o: In function `b_addqchr': > >>> hush.c:(.text.b_addqchr+0x78): undefined reference to `_restgpr_29_x' > >>> ... > >>> > >>> > >>> This goes on for a few pages. > >>> > >>> As far as I can see, the possibilities I have here, is to either > >>> integrate the missing functions out of the gcc sources into barebox, or > >>> make barebox link with libgcc, which seems surprisingly difficult, due > >>> to the unfamiliar (to me) build process. A simple LDFLAGS_barebox+=-l.. > >>> -L.. did not help here. > >>> > >>> Am I right with this assumption, or am I missing something else here? > >> > >> We don't want to link barebox against libgcc, that's bad style. I > >> suggest to port arch/powerpc/lib/crtsavres.S from the linux kernel to > >> barebox. > > > > Thanks. I will give this a shot and see how far I get. If it works I > > will come back with a patch. > > Hi. > > With a little help from a collegue, we came up with the patches in the > followong mails. Basically the kernel files without the 64 bit parts. > > The second patch was another part of libgcc, which seemed to fit best in > the misc.S file, which was already present. Applied to -master. Thanks Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox