linux-kernel - Re: [PATCH v2] MIPS: Makefile: Remove "ifdef need-compiler" for Kbuild.platforms

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Date:   Sun, 12 Dec 2021 19:09:14 -0700
From:   Nathan Chancellor <nathan@...nel.org>
To:     Ryutaroh Matsumoto <ryutaroh@....e.titech.ac.jp>
Cc:     masahiroy@...nel.org, yangtiezhu@...ngson.cn,
        tsbogend@...ha.franken.de, jason@...ehome.net,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] MIPS: Makefile: Remove "ifdef need-compiler" for
 Kbuild.platforms

On Mon, Dec 13, 2021 at 09:35:20AM +0900, Ryutaroh Matsumoto wrote:
> From: Masahiro Yamada <masahiroy@...nel.org>
> Subject: Re: [PATCH v2] MIPS: Makefile: Remove "ifdef need-compiler" for Kbuild.platforms
> Date: Sat, 11 Dec 2021 01:39:10 +0900
> > Nathan's patch cleaned up  arch/mips/loognson2ef/Platform,
> > but I still see similar code in arch/mips/sgi-ip22/Platform.
> > 
> > 
> > ifdef CONFIG_SGI_IP28
> >   ifeq ($(call cc-option-yn,-march=r10000 -mr10k-cache-barrier=store), n)
> >       $(error gcc doesn't support needed option -mr10k-cache-barrier=store)
> >   endif
> > endif
> > 
> > 
> > Doesn't this cause a failure of *-pkg builds for sgi-ip22 platform?
> 
> Yes, it does, as reported at
> https://github.com/ClangBuiltLinux/linux/issues/1543

It seems like that section can be removed for the same reason as my
patch (that flag is supported with GCC 5.1.0) then this patch can be
applied without any issues.

Cheers,
Nathan