linux-kernel - [PATCH 2/2] powerpc/boot: Set target when cross-compiling for clang

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Date:   Mon,  5 Nov 2018 09:41:33 +1030
From:   Joel Stanley <joel@....id.au>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH 2/2] powerpc/boot: Set target when cross-compiling for clang

Clang needs to be told which target it is building for when cross
compiling.

Link: https://github.com/ClangBuiltLinux/linux/issues/259
Signed-off-by: Joel Stanley <joel@....id.au>
---
 arch/powerpc/boot/Makefile | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 39354365f54a..8fdb1890f09a 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -55,6 +55,13 @@ BOOTAFLAGS	:= -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
 
 BOOTARFLAGS	:= -cr$(KBUILD_ARFLAGS)
 
+ifdef CONFIG_CC_IS_CLANG
+BOOTCFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX)
+BOOTAFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX)
+BOOTCFLAGS += $(call cc-option, -no-integrated-as)
+BOOTAFLAGS += $(call cc-option, -no-integrated-as)
+endif
+
 ifdef CONFIG_DEBUG_INFO
 BOOTCFLAGS	+= -g
 endif
-- 
2.19.1