Re: [PATCH] Makefile: Add '-fno-builtin-bcmp' to CLANG_FLAGS

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On Mon, Mar 25, 2019 at 12:38:33AM +0000, Sasha Levin wrote:
> Hi,
> 
> [This is an automated email]
> 
> This commit has been processed because it contains a -stable tag.
> The stable tag indicates that it's relevant for the following trees: all
> 
> The bot has tested the following trees: v5.0.3, v4.19.30, v4.14.107, v4.9.164, v4.4.176, v3.18.136.
> 
> v5.0.3: Build OK!
> v4.19.30: Build OK!
> v4.14.107: Build OK!
> v4.9.164: Build OK!
> v4.4.176: Failed to apply! Possible dependencies:
>     238bcbc4e07f ("kbuild: consolidate Clang compiler flags")
>     dbe27a002ef8 ("kbuild: add -no-integrated-as Clang option unconditionally")
> 
> v3.18.136: Failed to apply! Possible dependencies:
>     238bcbc4e07f ("kbuild: consolidate Clang compiler flags")
>     35288e30ebca ("Kbuild: fix file name in comment about extra gcc checks")
>     5631d9c42985 ("kbuild: Fix clang detection")
>     665d92e38f65 ("kbuild: do not add $(call ...) to invoke cc-version or cc-fullversion")
>     785f11aa595b ("kbuild: Add better clang cross build support")
>     92d6cf2dab83 ("powerpc: Don't use -mno-strict-align on clang")
>     a37c45cd82e6 ("kbuild: clang: add -no-integrated-as to KBUILD_[AC]FLAGS")
>     ae6b289a3789 ("kbuild: Set KBUILD_CFLAGS before incl. arch Makefile")
>     bb3f38c3c5b7 ("kbuild: clang: fix build failures with sparse check")
>     bfb38988c51e ("kbuild: clang: Disable 'address-of-packed-member' warning")
>     dd33c03b18b3 ("kbuild: fix cc-ifversion macro")
>     e79c8385c878 ("powerpc: Don't do gcc version checks if we're building with clang")
>     ee4eb20dbce9 ("Makefile: Fix detection of clang when cross-compiling")
>     ef8c4ed9db80 ("kbuild: allow to use GCC toolchain not in Clang search path")
> 
> 
> How should we proceed with this patch?
> 
> --
> Thanks,
> Sasha

Hi Sasha,

This patch will not be picked up, Nick's patch is a much better fix,
which should apply cleanly to all stable branches after it makes it into
mainline.

https://lore.kernel.org/lkml/20190313211335.165605-1-ndesaulniers@xxxxxxxxxx/

Thanks for letting us know!
Nathan



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