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

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This reverts commit e145f7b103.

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 11:37:31 -08:00 committed by Michael Bestas
parent ae5c69d807
commit 148cfe859f
No known key found for this signature in database
GPG Key ID: CC95044519BE6669
6 changed files with 6 additions and 17 deletions
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6
Makefile
View File

@ -555,11 +555,7 @@ endif
ifneq ($(shell $(CC) --version 2>&1 | grep clang),)
ifneq ($(CROSS_COMPILE),)
CLANG_TRIPLE ?= $(CROSS_COMPILE)
CLANG_FLAGS += --target=$(notdir $(CLANG_TRIPLE:%-=%))
ifeq ($(shell $(srctree)/scripts/clang-android.sh $(CC) $(CLANG_FLAGS)), y)
$(error "Clang with Android --target detected. Did you specify CLANG_TRIPLE?")
endif
CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%))
GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))
GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..)

5
build.config.aarch64
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@ -1,8 +1,7 @@
ARCH=arm64
CLANG_TRIPLE=aarch64-linux-gnu-
CROSS_COMPILE=aarch64-linux-androidkernel-
CROSS_COMPILE_COMPAT=arm-linux-androidkernel-
CROSS_COMPILE=aarch64-linux-gnu-
CROSS_COMPILE_COMPAT=arm-linux-gnueabi-
LINUX_GCC_CROSS_COMPILE_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 \
(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
CLANG_TRIPLE=arm-linux-gnueabi-
CROSS_COMPILE=arm-linux-androidkernel-
CROSS_COMPILE=arm-linux-gnueabi-
LINUX_GCC_CROSS_COMPILE_PREBUILTS_BIN=prebuilts/gas/linux-x86
FILES="

3
build.config.x86_64
View File

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