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authorVincenzo Frascino <vincenzo.frascino@arm.com>2020-03-20 14:53:51 +0000
committerThomas Gleixner <tglx@linutronix.de>2020-03-21 15:24:03 +0100
commita5d442f50a41d7c5a6a97b19c49d8a1ee0cf128b (patch)
treeea7d3fd828618c486413dc61fcc960f71967e015 /arch/arm64/kernel/vdso32
parent8c59ab839f526437831ff6d1405c9a6d93f475eb (diff)
arm64: vdso32: Enable Clang Compilation
Enable Clang Compilation for the vdso32 library. Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Nathan Chancellor <natechancellor@gmail.com> # build Tested-by: Stephen Boyd <swboyd@chromium.org> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Link: https://lkml.kernel.org/r/20200320145351.32292-27-vincenzo.frascino@arm.com
Diffstat (limited to 'arch/arm64/kernel/vdso32')
-rw-r--r--arch/arm64/kernel/vdso32/Makefile11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile
index 04df57b43cb1..3964738ebbde 100644
--- a/arch/arm64/kernel/vdso32/Makefile
+++ b/arch/arm64/kernel/vdso32/Makefile
@@ -10,7 +10,18 @@ include $(srctree)/lib/vdso/Makefile
# Same as cc-*option, but using CC_COMPAT instead of CC
ifeq ($(CONFIG_CC_IS_CLANG), y)
+COMPAT_GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE_COMPAT)elfedit))
+COMPAT_GCC_TOOLCHAIN := $(realpath $(COMPAT_GCC_TOOLCHAIN_DIR)/..)
+
+CC_COMPAT_CLANG_FLAGS := --target=$(notdir $(CROSS_COMPILE_COMPAT:%-=%))
+CC_COMPAT_CLANG_FLAGS += --prefix=$(COMPAT_GCC_TOOLCHAIN_DIR)
+CC_COMPAT_CLANG_FLAGS += -no-integrated-as -Qunused-arguments
+ifneq ($(COMPAT_GCC_TOOLCHAIN),)
+CC_COMPAT_CLANG_FLAGS += --gcc-toolchain=$(COMPAT_GCC_TOOLCHAIN)
+endif
+
CC_COMPAT ?= $(CC)
+CC_COMPAT += $(CC_COMPAT_CLANG_FLAGS)
else
CC_COMPAT ?= $(CROSS_COMPILE_COMPAT)gcc
endif