Re: [PATCH] powerpc: remove meaningless KBUILD_ARFLAGS addition

On Sat, Jul 13, 2019 at 10:17 PM Segher Boessenkool
[off-list ref] wrote:

On Sat, Jul 13, 2019 at 07:47:44AM -0500, Segher Boessenkool wrote:

quoted

On Sat, Jul 13, 2019 at 12:21:06PM +0900, Masahiro Yamada wrote:

quoted

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