[PATCH] kbuild: clang: do not use CROSS_COMPILE for target triple

From: Masahiro Yamada <masahiroy@kernel.org>
To: linux-kbuild@vger.kernel.org,
	Nathan Chancellor <nathan@kernel.org>,
	Nick Desaulniers <ndesaulniers@google.com>,
	Tom Rix <trix@redhat.com>,
	llvm@lists.linux.dev
Cc: linux-kernel@vger.kernel.org, Fangrui Song <maskray@google.com>,
	Masahiro Yamada <masahiroy@kernel.org>,
	Nicolas Schier <nicolas@fjasle.eu>
Subject: [PATCH] kbuild: clang: do not use CROSS_COMPILE for target triple
Date: Sun,  2 Apr 2023 02:01:17 +0900	[thread overview]
Message-ID: <20230401170117.1580840-1-masahiroy@kernel.org> (raw)

The target triple is overridden by the user-supplied CROSS_COMPILE,
but I do not see a good reason to support it. Users can use a new
architecture without adding CLANG_TARGET_FLAGS_*, but that would be
a rare case.

Use the hard-coded and deterministic target triple all the time.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 scripts/Makefile.clang | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/scripts/Makefile.clang b/scripts/Makefile.clang
index 70b354fa1cb4..9076cc939e87 100644
--- a/scripts/Makefile.clang
+++ b/scripts/Makefile.clang
@@ -13,15 +13,11 @@ CLANG_TARGET_FLAGS_x86		:= x86_64-linux-gnu
 CLANG_TARGET_FLAGS_um		:= $(CLANG_TARGET_FLAGS_$(SUBARCH))
 CLANG_TARGET_FLAGS		:= $(CLANG_TARGET_FLAGS_$(SRCARCH))
 
-ifeq ($(CROSS_COMPILE),)
 ifeq ($(CLANG_TARGET_FLAGS),)
-$(error Specify CROSS_COMPILE or add '--target=' option to scripts/Makefile.clang)
+$(error add '--target=' option to scripts/Makefile.clang)
 else
 CLANG_FLAGS	+= --target=$(CLANG_TARGET_FLAGS)
-endif # CLANG_TARGET_FLAGS
-else
-CLANG_FLAGS	+= --target=$(notdir $(CROSS_COMPILE:%-=%))
-endif # CROSS_COMPILE
+endif
 
 ifeq ($(LLVM_IAS),0)
 CLANG_FLAGS	+= -fno-integrated-as
-- 
2.37.2

