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Subject: Partial fix! - Was: Re: [BUG report] UML linux-2.6 latest BK
	doesn't compile
From: Anton Altaparmakov <aia21@cam.ac.uk>
To: Jeff Dike <jdike@addtoit.com>
Cc: Blaisorblade <blaisorblade@yahoo.it>, lkml <linux-kernel@vger.kernel.org>,
       user-mode-linux-devel@lists.sourceforge.net
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Organization: University of Cambridge Computing Service, UK
Date: Mon, 14 Feb 2005 11:35:03 +0000
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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.  (-:

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
-- 
Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @)
Unix Support, Computing Service, University of Cambridge, CB2 3QH, UK
Linux NTFS maintainer / IRC: #ntfs on irc.freenode.net
WWW: http://linux-ntfs.sf.net/ & http://www-stu.christs.cam.ac.uk/~aia21/


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