linux-kernel - building csky with CC=clang

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Message-ID: <CAKwvOdmnhsPU0UA9uEd1HTQ_yoBO8h741+sKrtebcPsXpXn8_g@mail.gmail.com>
Date:   Tue, 22 Dec 2020 12:29:37 -0800
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Guo Ren <guoren@...nel.org>
Cc:     linux-csky@...r.kernel.org,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        Arnd Bergmann <arnd@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: building csky with CC=clang

Hello!
I was playing with some of LLVM's experimental backends (m68k) and saw
there was a CSKY backend. I rebuilt LLVM to support CSKY, but I ran
into trouble building the kernel before even getting to the compiler
invocation:

$ ARCH=csky CROSS_COMPILE=csky-linux-gnu- make CC=clang -j71 defconfig
...
scripts/Kconfig.include:40: linker 'csky-linux-gnu-ld' not found

My distro doesn't package binutils-csky-linux-gnu, is there
documentation on how to build the kernel targeting CSKY, starting with
building GNU binutils configured with CSKY emulation?
-- 
Thanks,
~Nick Desaulniers