From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1D1TuV-0006Z2-4C for user-mode-linux-devel@lists.sourceforge.net; Wed, 16 Feb 2005 10:28:27 -0800 Received: from smtp001.mail.ukl.yahoo.com ([217.12.11.32]) by sc8-sf-mx1.sourceforge.net with smtp (Exim 4.41) id 1D1TuQ-0006dz-2w for user-mode-linux-devel@lists.sourceforge.net; Wed, 16 Feb 2005 10:28:27 -0800 From: Blaisorblade Subject: Re: [uml-devel] Partial fix! - Was: Re: [BUG report] UML linux-2.6 latest BK doesn't compile References: <1107857395.15872.2.camel@imp.csi.cam.ac.uk> <200502082223.j18MMxs0013724@ccure.user-mode-linux.org> <1108380903.22656.9.camel@imp.csi.cam.ac.uk> In-Reply-To: <1108380903.22656.9.camel@imp.csi.cam.ac.uk> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200502161927.05897.blaisorblade@yahoo.it> Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Wed, 16 Feb 2005 19:27:03 +0100 To: user-mode-linux-devel@lists.sourceforge.net Cc: Anton Altaparmakov , Jeff Dike , lkml On Monday 14 February 2005 12:35, Anton Altaparmakov wrote: > On Tue, 2005-02-08 at 17:22 -0500, Jeff Dike wrote: > > blaisorblade@yahoo.it said: > > > Why not simply disable CONFIG_GCOV for him, in this case? > > > > Anton presumably turned on CONFIG_GCOV because he wanted to do some > > profiling... > > Yes. I finally found a way to get it to compile. Compiling without TT > mode and WITHOUT static build it still fails with the same problem > (__bb_init_func problem I already reported). But compiling without TT > but WITH static build the __bb_init_func problem goes away but instead I > get a __gcov_init missing symbol in my modules. > > Note I have gcc-3.3.4-11 (SuSE 9.2) and it defines __gcov_init. So I > added this as an export symbol and lo and behold the kernel and modules > compiled and I am now up an running with UML and NTFS as a module. (-: What do we do for previous GCC, which probably do not define _gcov_init (at least I guess, since things worked before)? We'll get a "unresolved symbol" in the kernel linking, I guess (unverified). It is possible, even if ugly, to $(NM) the relevant libraries to choose what to do, by adding a -D__EXPORT_GCOV_INIT_ (or even, if we know well, to indicate the GCC version needed for this). So, for now, I guess we must defer this to later than 2.6.11... > Here is the patch that I used to fix this: > > --- ntfs-2.6-devel/arch/um/kernel/gmon_syms.c.old 2005-02-14 > 11:27:04.789474410 +0000 +++ > ntfs-2.6-devel/arch/um/kernel/gmon_syms.c 2005-02-14 11:26:49.191117739 > +0000 @@ -8,6 +8,9 @@ > extern void __bb_init_func(void *); > EXPORT_SYMBOL(__bb_init_func); > > +extern void __gcov_init(void *); > +EXPORT_SYMBOL(__gcov_init); > + > /* > * Overrides for Emacs so that we follow Linus's tabbing style. > * Emacs will notice this stuff at the end of the file and automatically > > Best regards, > > Anton -- Paolo Giarrusso, aka Blaisorblade Linux registered user n. 292729 http://www.user-mode-linux.org/~blaisorblade ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel