[PATCH 0/5] ARM: clang support

From: Stefan Agner
Date: Tue Mar 20 2018 - 19:02:51 EST


This patchset fixes some remaining issues when building the ARM
architecture using LLVM/clang. The patchset requires the following
kbuild change:
https://lkml.org/lkml/2018/3/19/1756

With that patch and this patchset applied and I can successfully
build the multi_v7_defconfig with 4.16-rc5 using clang 5.0.1.

So far I mainly tested with ARMv7 architectures. A brief test with
ARMv6 enabled (multi platform configuraiton) failed with an error
from the assembler:
/tmp/empty-96a4d6.s: Assembler messages:
/tmp/empty-96a4d6.s:4: Error: unknown cpu `arm1176j-s'

It seems that clang emits a non-existig cpu name:
https://reviews.llvm.org/D18086

Stefan Agner (5):
bus: arm-cci: use asm unreachable
efi/libstub/arm: add support for building with clang
ARM: trusted_foundations: do not use naked function
ARM: drop no-thumb-interwork in EABI mode
ARM: add support for building ARM kernel with clang

arch/arm/Makefile | 4 ++--
arch/arm/boot/compressed/Makefile | 2 +-
arch/arm/firmware/trusted_foundations.c | 12 +++++++-----
drivers/bus/arm-cci.c | 3 +--
drivers/firmware/efi/libstub/Makefile | 3 ++-
5 files changed, 13 insertions(+), 11 deletions(-)

--
2.16.2