linux-kernel - Re: [PATCH 5.10 11/21] arm64: vdso32: suppress error message for make mrproper

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Message-ID: <CAKwvOdkFAiDN_tnDUH+tDdEoUfpiXQFN2qN-bT=RGAbbcFGpMA@mail.gmail.com>
Date:   Fri, 19 Nov 2021 14:30:14 -0800
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Pavel Machek <pavel@...x.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Lucas Henneman <henneman@...gle.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Nathan Chancellor <nathan@...nel.org>,
        Will Deacon <will@...nel.org>
Subject: Re: [PATCH 5.10 11/21] arm64: vdso32: suppress error message for make mrproper

On Fri, Nov 19, 2021 at 2:24 PM Nick Desaulniers
<ndesaulniers@...gle.com> wrote:
>
> On Fri, Nov 19, 2021 at 1:47 PM Pavel Machek <pavel@...x.de> wrote:
> >
> > Hi!
> >
> > > commit 14831fad73f5ac30ac61760487d95a538e6ab3cb upstream.
> > >
> > > When running the following command without arm-linux-gnueabi-gcc in
> > > one's $PATH, the following warning is observed:
> > >
> > > $ ARCH=arm64 CROSS_COMPILE_COMPAT=arm-linux-gnueabi- make -j72 LLVM=1 mrproper
> > > make[1]: arm-linux-gnueabi-gcc: No such file or directory
> > >
> > > This is because KCONFIG is not run for mrproper, so CONFIG_CC_IS_CLANG
> > > is not set, and we end up eagerly evaluating various variables that try
> > > to invoke CC_COMPAT.
> >
> > Upstream commit is fine, but 5.10 port misses the 2> part of the
> > change.
>
> You're right; thanks for the report. Greg, can you drop this version
> of the backport for 5.10 and 5.4? I'll resubmit an updated version.

V2 sent:
https://lore.kernel.org/stable/CAKwvOdkZ1ydLs2VwvVLtT7QK+e1gNB0ZE5RqTxMY15QQvhxZ1w@mail.gmail.com/

>
> >
> > > +++ b/arch/arm64/kernel/vdso32/Makefile
> > > @@ -48,7 +48,8 @@ cc32-as-instr = $(call try-run,\
> > >  # As a result we set our own flags here.
> > >
> > >  # KBUILD_CPPFLAGS and NOSTDINC_FLAGS from top-level Makefile
> > > -VDSO_CPPFLAGS := -D__KERNEL__ -nostdinc -isystem $(shell $(CC_COMPAT) -print-file-name=include)
> > > +VDSO_CPPFLAGS := -D__KERNEL__ -nostdinc
> > > +VDSO_CPPFLAGS += -isystem $(shell $(CC_COMPAT) -print-file-name=include)
> > >  VDSO_CPPFLAGS += $(LINUXINCLUDE)
> > >
> > >  # Common C and assembly flags
> > >
> >
> > Best regards,
> >                                                                 Pavel
> > --
> > DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
> > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
>
>
>
> --
> Thanks,
> ~Nick Desaulniers



-- 
Thanks,
~Nick Desaulniers