linux-kernel - Re: [PATCH kernel v2] powerpc/makefile: Do not redefine $(CPP) for preprocessor

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Message-ID: <20210511231635.GR10366@gate.crashing.org>
Date:   Tue, 11 May 2021 18:16:35 -0500
From:   Segher Boessenkool <segher@...nel.crashing.org>
To:     Alexey Kardashevskiy <aik@...abs.ru>
Cc:     Michal Marek <michal.lkml@...kovi.net>,
        linux-kbuild@...r.kernel.org,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-kernel@...r.kernel.org, Nicholas Piggin <npiggin@...il.com>,
        Nathan Chancellor <nathan@...nel.org>,
        clang-built-linux@...glegroups.com, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH kernel v2] powerpc/makefile: Do not redefine $(CPP) for preprocessor

On Tue, May 11, 2021 at 11:30:17PM +1000, Alexey Kardashevskiy wrote:
> >In any case, please mention the reasoning (and the fact that you are
> >removing these flags!) in the commit message.  Thanks!
> 
> but i did mention this, the last paragraph... they are duplicated.

Oh!  I completely missed those few lines.  Sorry for that :-(

To compensate a bit:

> It still puzzles me why we need -C
> (preserve comments in the preprocessor output) flag here.

It is so that a human can look at the output and read it.  Comments are
very significant to human readers :-)


Segher