Re: [PATCH] Fix allnoconfig build with gcc4

[Mika Kukkonen <mikukkon@iki.fi>]

On 9/11/05, Linus Torvalds <torvalds@osdl.org> wrote:
> 
> 
(...)
> No, this would cause a compile error if CONFIG_NET and CONFIG_SYSCTL
> is enabled (because sysctl_net.c needs that declaration).

Ah yes. I got confused by googling which showed that there are some issues
with these declarations and gcc4 (see for example this thread:
http://gcc.gnu.org/ml/gcc/2005-02/msg00053.html).

> So the correct solution is apparently either one of
> 
>  - always declare an empty "struct ctl_table" regardless of whether SYSCTL
>    is enabled or not.
> 
>    This might be a good idea, since it probably allows more code to be
>    compiled without checking for CONFIG_SYSCTL.
> 
>  - put the ether_table[] declaration inside a #ifdef CONFIG_SYSCTL.

core_table in include/net/sock.h uses the latter option, so I'll send
you a patch
for that (with better email client).

--MiKu