Subject: Re: linux-next: UML build error

From: Gabriel C <[email-masked]>
Date: Wed, 21 May 2008 22:20:39 +0200

Jeff Dike wrote:

> On Wed, May 21, 2008 at 07:26:09PM +0200, Gabriel C wrote:
>>   CC      arch/um/sys-x86_64/ksyms.o
>> arch/um/sys-x86_64/ksyms.c:5: error: '__memcpy' undeclared here (not in a function)
>> arch/um/sys-x86_64/ksyms.c:5: warning: type defaults to 'int' in declaration of '__memcpy'
> 
> Does the patch below help?  There's gcc-version-dependent logic in
> include/asm-x86/string_64.h which decides whether to declare memcpy or
> __memcpy and it looks like you're hitting that.

Yes is fixes this error , however I get now another one but this one seems to be an compiler bug.

...
 CC      arch/um/sys-x86_64/um_module.o
  LD      arch/um/sys-x86_64/subarch.o
  LD      arch/um/sys-x86_64/built-in.o
  LD      arch/x86/crypto/built-in.o
  CC      kernel/sched.o
In file included from kernel/sched.c:1842:
kernel/sched_idletask.c: In function 'check_preempt_curr_idle':
kernel/sched_idletask.c:20: internal compiler error: in cgraph_estimate_size_after_inlining, at ipa-inline.c:188

...

This is gcc 4.3.0 ( with backports of some known fixed bugs ).
I try to build latest snapshot of gcc 4.3* later on today and try with this one. 

> 	     	      Jeff

Gabriel