From: Stefan Agner <stefan@agner.ch>
To: linux@armlinux.org.uk, arnd@arndb.de
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Stefan Agner <stefan@agner.ch>
Subject: [PATCH] ARM: disable ARMv6 for Clang older than 8.0
Date: Mon, 1 Oct 2018 00:22:30 +0200 [thread overview]
Message-ID: <20180930222230.24167-1-stefan@agner.ch> (raw)
The kernel passes the ArmV6K architecture to the compiler when
using the multi platform selection and enabling ARMv6. Clang
older than version 8.0 emit assembly with an non-existing CPU,
which then makes the assembler fail. Prevent the user from
selecting ARMv6 when using Clang before 8.0.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Link: https://github.com/ClangBuiltLinux/linux/issues/55
---
arch/arm/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e8cd55a5b04c..8da160757381 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -671,6 +671,7 @@ config ARCH_MULTI_V4_V5
config ARCH_MULTI_V6
bool "ARMv6 based platforms (ARM11)"
+ depends on !CC_IS_CLANG || CLANG_VERSION>=80000
select ARCH_MULTI_V6_V7
select CPU_V6K
--
2.19.0
next reply other threads:[~2018-09-30 22:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-30 22:22 Stefan Agner [this message]
2018-09-30 23:48 ` Joe Perches
2018-10-01 16:53 ` Russell King - ARM Linux
2018-10-01 19:48 ` Stefan Agner
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