Re: [5.15-rc1][PPC][bisected 6d2ef226] mainline build breaks at ./include/linux/compiler_attributes.h:62:5: warning: "__has_attribute"
On Mon, Sep 13, 2021 at 11:22 PM Stephen Rothwell wrote:
>
> Hi Abdul,
>
> On Tue, 14 Sep 2021 11:39:44 +0530 Abdul Haleem
> wrote:
> >
> > Today's mainline kernel fails to compile on my powerpc box with below errors
> >
> > ././include/linux/compiler_attributes.h:62:5: warning: "__has_attribute" is
> > not defined, evaluates to 0 [-Wundef]
> > #if __has_attribute(__assume_aligned__)
> > ^~~
> > ././include/linux/compiler_attributes.h:62:20: error: missing binary
> > operator before token "("
> > #if __has_attribute(__assume_aligned__)
> > ^
> > ././include/linux/compiler_attributes.h:88:5: warning: "__has_attribute" is
> > not defined, evaluates to 0 [-Wundef]
> > #if __has_attribute(__copy__)
> > ^~~
> > ././include/linux/compiler_attributes.h:88:20: error: missing binary
> > operator before token "("
> > #if __has_attribute(__copy__)
> >
> > Kernel builds fine when below patch is reverted
> >
> > commit 6d2ef22 : compiler_attributes.h: drop __has_attribute() support for
> > gcc4
>
> Thanks for your report.
>
> This is known and being addressed.
Thanks for the report. Support for GCC 4.X has been dropped.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=76ae847497bc5207c479de5e2ac487270008b19b
--
Thanks,
~Nick Desaulniers
Re: [5.15-rc1][PPC][bisected 6d2ef226] mainline build breaks at ./include/linux/compiler_attributes.h:62:5: warning: "__has_attribute"
Hi Abdul,
On Tue, 14 Sep 2021 11:39:44 +0530 Abdul Haleem
wrote:
>
> Today's mainline kernel fails to compile on my powerpc box with below errors
>
> ././include/linux/compiler_attributes.h:62:5: warning: "__has_attribute" is
> not defined, evaluates to 0 [-Wundef]
> #if __has_attribute(__assume_aligned__)
> ^~~
> ././include/linux/compiler_attributes.h:62:20: error: missing binary operator
> before token "("
> #if __has_attribute(__assume_aligned__)
> ^
> ././include/linux/compiler_attributes.h:88:5: warning: "__has_attribute" is
> not defined, evaluates to 0 [-Wundef]
> #if __has_attribute(__copy__)
> ^~~
> ././include/linux/compiler_attributes.h:88:20: error: missing binary operator
> before token "("
> #if __has_attribute(__copy__)
>
> Kernel builds fine when below patch is reverted
>
> commit 6d2ef22 : compiler_attributes.h: drop __has_attribute() support for
> gcc4
Thanks for your report.
This is known and being addressed.
--
Cheers,
Stephen Rothwell
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