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From: Masahiro Yamada <yamada.masahiro@socionext.com>
To: Segher Boessenkool <segher@kernel.crashing.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	Paul Mackerras <paulus@samba.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Nicholas Piggin <npiggin@gmail.com>
Subject: Re: [PATCH] powerpc: remove meaningless KBUILD_ARFLAGS addition
Date: Sun, 14 Jul 2019 07:45:15 +0900
Message-ID: <CAK7LNASBmZxX+U=LS+dgvet96cA3T6Tf_tiAa2vduUV81DEnBw@mail.gmail.com> (raw)
In-Reply-To: <20190713131642.GU14074@gate.crashing.org>

On Sat, Jul 13, 2019 at 10:17 PM Segher Boessenkool
<segher@kernel.crashing.org> wrote:
>
> On Sat, Jul 13, 2019 at 07:47:44AM -0500, Segher Boessenkool wrote:
> > On Sat, Jul 13, 2019 at 12:21:06PM +0900, Masahiro Yamada wrote:
> > > The KBUILD_ARFLAGS addition in arch/powerpc/Makefile has never worked
> > > in a useful way because it is always overridden by the following code
> > > in the top Makefile:
> > >
> > >   # use the deterministic mode of AR if available
> > >   KBUILD_ARFLAGS := $(call ar-option,D)
> > >
> > > The code in the top Makefile was added in 2011, by commit 40df759e2b9e
> > > ("kbuild: Fix build with binutils <= 2.19").
> > >
> > > The KBUILD_ARFLAGS addition for ppc has always been dead code from the
> > > beginning.
> >
> > That was added in 43c9127d94d6 to replace my 8995ac870273 from 2007.
> >
> > Is it no longer supported to build a 64-bit kernel with a toolchain
> > that defaults to 32-bit, or the other way around?  And with non-native
> > toolchains (this one didn't run on Linux, even).
>
> It was an --enable-targets=all toolchain, somewhat common for crosses,
> if that matters.


I always use the same toolchain
for compile-testing PPC32/64.

I have never been hit by the issue you mention.
Somebody would have reported it if it were still a problem.

Moreover, commit 43c9127d94d6
translated the environment variable "GNUTARGET"
into the command option "--target="

My powerpc-linux-ar does not know it:

powerpc-linux-ar: -t: No such file or directory




-- 
Best Regards
Masahiro Yamada

  reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-13  3:21 Masahiro Yamada
2019-07-13 12:47 ` Segher Boessenkool
2019-07-13 13:16   ` Segher Boessenkool
2019-07-13 22:45     ` Masahiro Yamada [this message]
2019-07-13 23:54       ` Segher Boessenkool
2019-07-15  7:05         ` Michael Ellerman
2019-07-15  7:29           ` Segher Boessenkool
2019-07-15 12:03             ` Masahiro Yamada
2019-07-15 18:16               ` Segher Boessenkool
2019-07-16  7:14                 ` Masahiro Yamada
2019-07-16 12:15             ` Michael Ellerman
2019-07-17 14:38               ` Segher Boessenkool
2019-07-17 15:19                 ` Masahiro Yamada
2019-07-17 16:46                   ` Segher Boessenkool
2019-07-18  2:19                     ` Masahiro Yamada
2019-07-18 20:46                       ` Segher Boessenkool
2019-07-19  3:39                         ` Michael Ellerman

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