linux-kernel - Re: [PATCH 0/2] infer CROSS_COMPILE from ARCH for LLVM=1 LLVM

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Message-ID: <CAKwvOdnG-E8HpK9txn4X=MiZSzfFHd90y1qny=0syNUWY3AaCg@mail.gmail.com>
Date:   Mon, 19 Jul 2021 14:10:32 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     Miguel Ojeda <ojeda@...nel.org>, Fangrui Song <maskray@...gle.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Arnd Bergmann <arnd@...nel.org>, linux-kernel@...r.kernel.org,
        linux-kbuild@...r.kernel.org, clang-built-linux@...glegroups.com
Subject: Re: [PATCH 0/2] infer CROSS_COMPILE from ARCH for LLVM=1 LLVM_IAS=1

Masahiro,
Do you have further thoughts on this series?


On Wed, Jul 7, 2021 at 3:43 PM Nick Desaulniers <ndesaulniers@...gle.com> wrote:
>
> We get constant feedback that the command line invocation of make is too
> long. CROSS_COMPILE is helpful when a toolchain has a prefix of the
> target triple, or is an absolute path outside of $PATH, but it's mostly
> redundant for a given ARCH.
>
> Instead, let's infer it from ARCH, and move some flag handling into a
> new file included from the top level Makefile.
>
> Nick Desaulniers (2):
>   Makefile: move initial clang flag handling into scripts/Makefile.clang
>   Makefile: drop CROSS_COMPILE for LLVM=1 LLVM_IAS=1
>
>  Documentation/kbuild/llvm.rst |  5 ++++
>  MAINTAINERS                   |  1 +
>  Makefile                      | 15 +----------
>  scripts/Makefile.clang        | 48 +++++++++++++++++++++++++++++++++++
>  4 files changed, 55 insertions(+), 14 deletions(-)
>  create mode 100644 scripts/Makefile.clang
>
>
> base-commit: a0e781a2a35a8dd4e6a38571998d59c6b0e32cd8
> --
> 2.32.0.93.g670b81a890-goog
>


--
Thanks,
~Nick Desaulniers