Messages in this thread Patch in this message | | | From | Alexander Lobakin <> | Subject | Re: [PATCH linux-next] tools: compiler-gcc.h: Keep compatible with older GCC versions | Date | Mon, 3 Jan 2022 15:46:35 +0100 |
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From: cgel.zte@gmail.com Date: Sun, 2 Jan 2022 12:02:01 +0000
> From: xu xin <xu.xin16@zte.com.cn> > > When HOST CC = gcc (GCC) 4.8.5, we found that there is an error occurring: ^^^^^
From [0]:
Program Minimal version GNU C 5.1
This applies to both HOSTCC and CC.
> Undefined __has_attribute as we built the whole kernel and tools. > > To solve this, this patch is given to keep the compatibility with older > GCC versions. > > Reported-by: Zeal Robot <zealci@zte.com.cn> > Co-developed-by: wangyong <wang.yong12@zte.com.cn> > Signed-off-by: xu xin <xu.xin16@zte.com.cn> > --- > tools/include/linux/compiler-gcc.h | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/tools/include/linux/compiler-gcc.h b/tools/include/linux/compiler-gcc.h > index 8816f06fc6c7..333ed16b3b12 100644 > --- a/tools/include/linux/compiler-gcc.h > +++ b/tools/include/linux/compiler-gcc.h > @@ -16,6 +16,10 @@ > # define __fallthrough __attribute__ ((fallthrough)) > #endif > > +#ifndef __has_attribute > +# define __has_attribute(x) 0 /* Compatibility with GCC versions < 5.x */ > +#endif > + > #if __has_attribute(__error__) > # define __compiletime_error(message) __attribute__((error(message))) > #endif > -- > 2.25.1
[0] https://elixir.bootlin.com/linux/v5.16-rc8/source/Documentation/process/changes.rst#L32
Al
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