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Revert "ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple"

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This reverts commit 4c451dba25.

AOSP's distribution of GNU binutils always had a curious target triple
prefix on the binaries.  Now that GNU binutils is deprecated for Android
Common Kernels, we can now remove this out of tree workaround. Now
building Android kernels with LLVM matches upstream (see
Documentation/kbuild/llvm.rst).

Bug: 118439987
Bug: 120440614
Bug: 141693040
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Change-Id: Iecaa3264a440f795f2f3a44bdf74fe28ad4ed1cc
This commit is contained in:
Nick Desaulniers 2020-11-10 11:45:35 -08:00
parent bc09bee25e
commit be047631de
6 changed files with 6 additions and 17 deletions
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6
Makefile
View file

@ -501,11 +501,7 @@ endif
ifeq ($(cc-name),clang) ifeq ($(cc-name),clang)
ifneq ($(CROSS_COMPILE),) ifneq ($(CROSS_COMPILE),)
CLANG_TRIPLE ?= $(CROSS_COMPILE) CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%))
CLANG_FLAGS += --target=$(notdir $(CLANG_TRIPLE:%-=%))
ifeq ($(shell $(srctree)/scripts/clang-android.sh $(CC) $(CLANG_FLAGS)), y)
$(error "Clang with Android --target detected. Did you specify CLANG_TRIPLE?")
endif
GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE)) CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))
GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..)

5
build.config.aarch64
View file

@ -1,8 +1,7 @@
ARCH=arm64 ARCH=arm64
CLANG_TRIPLE=aarch64-linux-gnu- CROSS_COMPILE=aarch64-linux-gnu-
CROSS_COMPILE=aarch64-linux-androidkernel- CROSS_COMPILE_COMPAT=arm-linux-gnueabi-
CROSS_COMPILE_COMPAT=arm-linux-androidkernel-
LINUX_GCC_CROSS_COMPILE_PREBUILTS_BIN=prebuilts/gas/linux-x86 LINUX_GCC_CROSS_COMPILE_PREBUILTS_BIN=prebuilts/gas/linux-x86
LINUX_GCC_CROSS_COMPILE_COMPAT_PREBUILTS_BIN=prebuilts/gas/linux-x86 LINUX_GCC_CROSS_COMPILE_COMPAT_PREBUILTS_BIN=prebuilts/gas/linux-x86

2
build.config.allmodconfig
View file

@ -10,5 +10,5 @@ function update_config() {
-e UNWINDER_FRAME_POINTER \ -e UNWINDER_FRAME_POINTER \
(cd ${OUT_DIR} && \ (cd ${OUT_DIR} && \
make O=${OUT_DIR} $archsubarch CLANG_TRIPLE=${CLANG_TRIPLE} CROSS_COMPILE=${CROSS_COMPILE} "${TOOL_ARGS[@]}" ${MAKE_ARGS} olddefconfig) make O=${OUT_DIR} $archsubarch CROSS_COMPILE=${CROSS_COMPILE} "${TOOL_ARGS[@]}" ${MAKE_ARGS} olddefconfig)
} }

3
build.config.arm
View file

@ -1,7 +1,6 @@
ARCH=arm ARCH=arm
CLANG_TRIPLE=arm-linux-gnueabi- CROSS_COMPILE=arm-linux-gnueabi-
CROSS_COMPILE=arm-linux-androidkernel-
LINUX_GCC_CROSS_COMPILE_PREBUILTS_BIN=prebuilts/gas/linux-x86 LINUX_GCC_CROSS_COMPILE_PREBUILTS_BIN=prebuilts/gas/linux-x86
FILES=" FILES="

3
build.config.x86_64
View file

@ -1,7 +1,6 @@
ARCH=x86_64 ARCH=x86_64
CLANG_TRIPLE=x86_64-linux-gnu- CROSS_COMPILE=x86_64-linux-gnu-
CROSS_COMPILE=x86_64-linux-androidkernel-
LINUX_GCC_CROSS_COMPILE_PREBUILTS_BIN=prebuilts/gas/linux-x86 LINUX_GCC_CROSS_COMPILE_PREBUILTS_BIN=prebuilts/gas/linux-x86
FILES=" FILES="

4
scripts/clang-android.sh
View file

@ -1,4 +0,0 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
$* -dM -E - </dev/null 2>&1 | grep -q __ANDROID__ && echo "y"