[YBA] kernel compile errors with GCC >= 4.6

[Oleg Goldshmidt]

On Wed, Apr 4, 2012 at 1:16 PM, Jonathan Ben Avraham <yba at tkos.co.il> wrote:

> Hi Oleg,
> Thanks.
> The quesiton relates to this problem:
> http://unix.stackexchange.com/**questions/35607/cross-lfs-ppc-**
> error-while-compiling/35621#**35621<http://unix.stackexchange.com/questions/35607/cross-lfs-ppc-error-while-compiling/35621#35621>
>

Ah,  -Wunused-but-set-variable ;-) This is quite common (with gcc-4.6) in
userspace code as well. :-(

So the same link tells you how you can configure kbuild to ignore it.

What I ususally do if it happens in one or two files only (of 3rd party
code that I have) is add something like

foo.o:  CFLAGS += -Wno-error=unused-but-set-variable

or

foo.o:  CFLAGS += -Wno-unused-but-set-variable

This does not switch -Werror globally or anything of the kind.

I am fairly sure that this can be done in the kernel in a similar manner.

-- 
Oleg Goldshmidt | oleg at goldshmidt.org
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