Re: Kernel 3.10-rc1 build warning on 32-bit ppc associated withcommit 3925f46

From: Benjamin Herrenschmidt
Date: Tue May 14 2013 - 19:34:17 EST


On Tue, 2013-05-14 at 10:29 -0500, Larry Finger wrote:
> Hi,
>
> When building 3.10-rc1 on a PowerBook G4, I get the following warning:

Thanks. Should be fixed now, let me know if it's not.

Cheers,
Ben.

> cc1: warnings being treated as errors
> arch/powerpc/perf/core-book3s.c: In function âpower_pmu_bhrb_readâ:
> arch/powerpc/perf/core-book3s.c:1479: error: integer constant is too large for
> âlongâ type
> make[2]: *** [arch/powerpc/perf/core-book3s.o] Error 1
> make[1]: *** [arch/powerpc/perf] Error 2
> make[1]: *** Waiting for unfinished jobs....
> LD arch/powerpc/platforms/powermac/built-in.o
> LD arch/powerpc/platforms/built-in.o
> make[1]: Leaving directory `/home/finger/wireless-testing'
> make: *** [debian/stamp/build/kernel] Error 2
>
> The code in question came from commit 3925f46 entitled "powerpc/perf: Enable
> branch stack sampling framework". The gcc version is 4.4.5 running with a Mint 9
> distribution.
>
> I have disabled the "-Werror" switch so that the build can continue. That
> Kconfig question about disabling WERROR is a bit confusing with its double
> negative construction.
>
> Thanks,
>
> Larry
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