[uml-devel] Bug#494995: user-mode-linux: static build fails with multiple definition of `strrchr'

[uml-devel] Bug#494995: user-mode-linux: static build fails with multiple definition of `strrchr'

[Mattia Dongili]

Hi Jeff,

I received this bug report in the Debian BTS (submitter and bug Cc-ed).
The full bug report hisory is here:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494995
and the .config from the submitter here:
http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=25;filename=config.i386.gz;att=1;bug=494995

In short statically linking the uml kernel fails with the error below.
Any idea what may be wrong?

On Thu, Aug 14, 2008 at 08:36:19PM +0900, Mattia Dongili wrote:
> On Thu, Aug 14, 2008 at 09:36:49AM +0100, Graham Cobb wrote:
> > On Wednesday 13 August 2008 23:19:05 Mattia Dongili wrote:
> > > can you try building 2.6.26 from unstable?
> > 
> > Exactly the same problem:
> > 
> >   LD      init/built-in.o
> >   LD      .tmp_vmlinux1
> > /usr/lib/gcc/i486-linux-gnu/4.3.1/../../../../lib/libc.a(strrchr.o): In 
> > function `rindex':
> > (.text+0x0): multiple definition of `strrchr'
> > lib/lib.a(string.o):/home/cobb/share/qemu/my-uml-32/user-mode-linux-2.6.26-1um/linux-source-2.6.26/lib/string.c:304: 
> > first defined here
> > arch/um/drivers/built-in.o: In function `vde_open_real':
> > (.text+0x5023): warning: Using 'getgrnam' in statically linked applications 
> > requires at runtime the shared libraries from the glibc version used for 
> > linking
> > arch/um/drivers/built-in.o: In function `vde_open_real':
> > (.text+0x4caf): warning: Using 'getpwuid' in statically linked applications 
> > requires at runtime the shared libraries from the glibc version used for 
> > linking
> > collect2: ld returned 1 exit status
> >   KSYM    .tmp_kallsyms1.S
> > nm: '.tmp_vmlinux1': No such file
> > No valid symbol.
> > make[1]: *** [.tmp_kallsyms1.S] Error 1
> 
> Sorry I didn't ask for this before, but can you attach your .config?
> Also, are you using make-kpkg, or are you rebuilding the binary package
> from the source (i.e.: using dpkg-buildpackage)? Or are you just using
> plain make?
> 
> thanks
> -- 
> mattia
> :wq!
> 
> 
> 
> 

-- 
mattia
:wq!

-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
User-mode-linux-devel mailing list
User-mode-linux-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel

Re: [uml-devel] Bug#494995: user-mode-linux: static build fails with multiple definition of `strrchr'

[Jeff Dike]

On Tue, Aug 19, 2008 at 08:47:04PM +0900, Mattia Dongili wrote:
> In short statically linking the uml kernel fails with the error below.
> Any idea what may be wrong?

A symbol clash between libc and the kernel.   Try this:

Index: linux-2.6.22/arch/um/Makefile
===================================================================
--- linux-2.6.22.orig/arch/um/Makefile	2008-07-07 12:54:13.000000000 -0400
+++ linux-2.6.22/arch/um/Makefile	2008-08-26 11:56:33.000000000 -0400
@@ -75,7 +75,8 @@ include $(srctree)/$(ARCH_DIR)/Makefile-
 # defines more robust
 
 KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
-			 -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES))
+			 -Dmktime=kernel_mktime -Dstrrchr=kernel_strrchr \
+			 $(ARCH_KERNEL_DEFINES))
 KBUILD_CFLAGS += $(KERNEL_DEFINES)
 
 PHONY += linux

			Jeff
-- 
Work email - jdike at linux dot intel dot com

-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
User-mode-linux-devel mailing list
User-mode-linux-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel

Re: [uml-devel] Bug#494995: user-mode-linux: static build fails with multiple definition of `strrchr'

[Graham Cobb]

On Tuesday 26 August 2008 21:20:12 Jeff Dike wrote:
> A symbol clash between libc and the kernel.   Try this:
>...

The patch itself didn't apply for me (probably because I copy/paste'd it from 
the email) but making the change by hand to the Makefile worked and fixed the 
problem.

-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
User-mode-linux-devel mailing list
User-mode-linux-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel

Re: [uml-devel] Bug#494995: user-mode-linux: static build fails with multiple definition of `strrchr'

[Jeff Dike]

On Wed, Aug 27, 2008 at 09:04:29AM +0100, Graham Cobb wrote:
> On Tuesday 26 August 2008 21:20:12 Jeff Dike wrote:
> > A symbol clash between libc and the kernel.   Try this:
> >...
> 
> The patch itself didn't apply for me (probably because I copy/paste'd it from 
> the email) but making the change by hand to the Makefile worked and fixed the 
> problem.

Great, thanks for the testing.

       	      	      Jeff

-- 
Work email - jdike at linux dot intel dot com

-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
User-mode-linux-devel mailing list
User-mode-linux-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel