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

[Andrew Morton]

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.

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