Re: [2.6 patch] add -Werror-implicit-function-declaration to CFLAGS

[Randy.Dunlap]

On Thu, 10 Nov 2005 18:24:43 -0800 Andrew Morton wrote:

> Adrian Bunk <bunk@xxxxxxxxx> wrote:
> >
> > On Thu, Nov 10, 2005 at 04:28:57AM -0800, Andrew Morton wrote:
> > > Adrian Bunk <bunk@xxxxxxxxx> wrote:
> > > >
> > > > Currently, using an undeclared function gives a compile warning, but it 
> > > >  can lead to a nasty runtime error if the prototype of the function is 
> > > >  different from what gcc guessed.
> > > > 
> > > >  With -Werror-implicit-function-declaration, we are getting an immediate 
> > > >  compile error instead.
> > > > 
> > > >  There will be some compile errors in cases where compilation previously
> > > >  worked because the undefined function wasn't called due to gcc dead code
> > > >  elimination, but in these cases a proper fix doesnt harm.
> > > > 
> > > 
> > > Sorry, I need to build allmodconfig kernels on wacky architectures (eg
> > > ppc64) and this patch is killing me.
> > 
> > Can you send me the list of compile errors so that I can work on fixing 
> > them?
> > 
> 
> No handily, sorry.   Missing virt_to_bus() is the typical problem.
> 
> The cross-tools at http://developer.osdl.org/dev/plm/cross_compile/ are
> quite simple to install.

Ack that.  Those are the ones I use.

---
~Randy
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