# Re: \[PATCH 13/35\] Disintegrate asm/system.h for M68K \[ver \#2\]

- From: David Howells \<dhowells@redhat.com\>
- Date: 2012-03-15 20:18:51 
- List: linux-arch
- Page: https://ratatoskr.run/linux-arch/2012/03/3836574
- Thread: https://ratatoskr.run/linux-arch/2012/03/3834514/t.md

```text
Greg Ungerer [ref] wrote:

> This breaks compilation for m68k targets with:
> 
>   CC      net/ipv4/ip_input.o
> In file included from
> /home/gerg/new-wave.320/linux-3.x/arch/m68k/include/asm/system.h:3:0,
>                  from net/ipv4/ip_input.c:116:
> /home/gerg/new-wave.320/linux-3.x/arch/m68k/include/asm/cmpxchg.h: In function
> ‘__xchg’:
> /home/gerg/new-wave.320/linux-3.x/arch/m68k/include/asm/cmpxchg.h:33:3: error:
> implicit declaration of function ‘BUG’
> 
> The old system.h included linux/kernel.h which includes asm/bug.h.
> Just including asm/bug.h here in cmpxchg.h is not enough to fix it.
> If you include linux/kernel.h though it compiles cleanly.

Which targets, btw?

David
```