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platform_vendor_tequila/build/tasks/kernel.mk
Nathan Chancellor ca40331215 build: kernel: Use LLVM_PREBUILTS_VERSION if no version is specified 
Some ROMs may want to track Google's master branch, which has Clang 6
and 7 toolchains available, as it gets rid of some hacks in the kernel
source. Unfortunately, with the current default choosing logic, the
latest one would be chosen, which it shouldn't be. Use the variable set
in build/make/core/clang/versions.mk, as that's what was intended.

Change-Id: I607c7f750f62caabee4cdccea67846feb7f632fa
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
2018-04-16 20:56:13 +02:00

449 lines
20 KiB
Makefile
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# Copyright (C) 2012 The CyanogenMod Project
# (C) 2017 The LineageOS Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Android makefile to build kernel as a part of Android Build
#
# Configuration
# =============
#
# These config vars are usually set in BoardConfig.mk:
#
# TARGET_KERNEL_SOURCE = Kernel source dir, optional, defaults
# to kernel/$(TARGET_DEVICE_DIR)
# TARGET_KERNEL_CONFIG = Kernel defconfig
# TARGET_KERNEL_VARIANT_CONFIG = Variant defconfig, optional
# TARGET_KERNEL_SELINUX_CONFIG = SELinux defconfig, optional
# TARGET_KERNEL_ADDITIONAL_CONFIG = Additional defconfig, optional
# TARGET_KERNEL_ARCH = Kernel Arch
# TARGET_KERNEL_CROSS_COMPILE_PREFIX = Compiler prefix (e.g. arm-eabi-)
# defaults to arm-linux-androidkernel- for arm
# aarch64-linux-androidkernel- for arm64
# x86_64-linux-androidkernel- for x86
#
# TARGET_KERNEL_CLANG_COMPILE = Compile kernel with clang, defaults to false
#
# TARGET_KERNEL_CLANG_VERSION = Clang prebuilts version, optional, defaults to clang-stable
#
# TARGET_KERNEL_CLANG_PATH = Clang prebuilts path, optional
#
# BOARD_KERNEL_IMAGE_NAME = Built image name
# for ARM use: zImage
# for ARM64 use: Image.gz
# for uncompressed use: Image
# If using an appended DT, append '-dtb'
# to the end of the image name.
# For example, for ARM devices,
# use zImage-dtb instead of zImage.
#
# KERNEL_TOOLCHAIN_PREFIX = Overrides TARGET_KERNEL_CROSS_COMPILE_PREFIX,
# Set this var in shell to override
# toolchain specified in BoardConfig.mk
# KERNEL_TOOLCHAIN = Path to toolchain, if unset, assumes
# TARGET_KERNEL_CROSS_COMPILE_PREFIX
# is in PATH
#
# KERNEL_CC = The C Compiler used. This is automatically set based
# on whether the clang version is set, optional.
#
# KERNEL_CLANG_TRIPLE = Target triple for clang (e.g. aarch64-linux-gnu-)
# defaults to arm-linux-gnu- for arm
# aarch64-linux-gnu- for arm64
# x86_64-linux-gnu- for x86
#
# USE_CCACHE = Enable ccache (global Android flag)
#
# NEED_KERNEL_MODULE_ROOT = Optional, if true, install kernel
# modules in root instead of system
ifneq ($(TARGET_NO_KERNEL),true)
TARGET_AUTO_KDIR := $(shell echo $(TARGET_DEVICE_DIR) | sed -e 's/^device/kernel/g')
## Externally influenced variables
# kernel location - optional, defaults to kernel/<vendor>/<device>
TARGET_KERNEL_SOURCE ?= $(TARGET_AUTO_KDIR)
KERNEL_SRC := $(TARGET_KERNEL_SOURCE)
# kernel configuration - mandatory
KERNEL_DEFCONFIG := $(TARGET_KERNEL_CONFIG)
VARIANT_DEFCONFIG := $(TARGET_KERNEL_VARIANT_CONFIG)
SELINUX_DEFCONFIG := $(TARGET_KERNEL_SELINUX_CONFIG)
## Internal variables
KERNEL_OUT := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ
KERNEL_CONFIG := $(KERNEL_OUT)/.config
TARGET_KERNEL_ARCH := $(strip $(TARGET_KERNEL_ARCH))
ifeq ($(TARGET_KERNEL_ARCH),)
KERNEL_ARCH := $(TARGET_ARCH)
else
KERNEL_ARCH := $(TARGET_KERNEL_ARCH)
endif
ifeq ($(KERNEL_ARCH),x86_64)
KERNEL_DEFCONFIG_ARCH := x86
else
KERNEL_DEFCONFIG_ARCH := $(KERNEL_ARCH)
endif
KERNEL_DEFCONFIG_SRC := $(KERNEL_SRC)/arch/$(KERNEL_DEFCONFIG_ARCH)/configs/$(KERNEL_DEFCONFIG)
ifeq ($(BOARD_KERNEL_IMAGE_NAME),)
$(error BOARD_KERNEL_IMAGE_NAME not defined.)
endif
ifneq ($(TARGET_USES_UNCOMPRESSED_KERNEL),)
$(error TARGET_USES_UNCOMPRESSED_KERNEL is deprecated.)
endif
ifneq ($(TARGET_KERNEL_APPEND_DTB),)
$(error TARGET_KERNEL_APPEND_DTB is deprecated.)
endif
TARGET_PREBUILT_INT_KERNEL := $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/$(BOARD_KERNEL_IMAGE_NAME)
# Clear this first to prevent accidental poisoning from env
MAKE_FLAGS :=
ifeq ($(KERNEL_ARCH),arm)
# Avoid "Unknown symbol _GLOBAL_OFFSET_TABLE_" errors
MAKE_FLAGS += CFLAGS_MODULE="-fno-pic"
endif
ifeq ($(KERNEL_ARCH),arm64)
# Avoid "unsupported RELA relocation: 311" errors (R_AARCH64_ADR_GOT_PAGE)
MAKE_FLAGS += CFLAGS_MODULE="-fno-pic"
endif
ifneq ($(TARGET_KERNEL_ADDITIONAL_CONFIG),)
KERNEL_ADDITIONAL_CONFIG := $(TARGET_KERNEL_ADDITIONAL_CONFIG)
KERNEL_ADDITIONAL_CONFIG_SRC := $(KERNEL_SRC)/arch/$(KERNEL_ARCH)/configs/$(KERNEL_ADDITIONAL_CONFIG)
ifeq ("$(wildcard $(KERNEL_ADDITIONAL_CONFIG_SRC))","")
$(warning TARGET_KERNEL_ADDITIONAL_CONFIG '$(TARGET_KERNEL_ADDITIONAL_CONFIG)' doesn't exist)
KERNEL_ADDITIONAL_CONFIG_SRC := /dev/null
endif
else
KERNEL_ADDITIONAL_CONFIG_SRC := /dev/null
endif
ifeq "$(wildcard $(KERNEL_SRC) )" ""
ifneq ($(TARGET_PREBUILT_KERNEL),)
HAS_PREBUILT_KERNEL := true
NEEDS_KERNEL_COPY := true
else
$(foreach cf,$(PRODUCT_COPY_FILES), \
$(eval _src := $(call word-colon,1,$(cf))) \
$(eval _dest := $(call word-colon,2,$(cf))) \
$(ifeq kernel,$(_dest), \
$(eval HAS_PREBUILT_KERNEL := true)))
endif
ifneq ($(HAS_PREBUILT_KERNEL),)
$(warning ***************************************************************)
$(warning * Using prebuilt kernel binary instead of source *)
$(warning * THIS IS DEPRECATED, AND WILL BE DISCONTINUED *)
$(warning * Please configure your device to download the kernel *)
$(warning * source repository to $(KERNEL_SRC))
$(warning * for more information *)
$(warning ***************************************************************)
FULL_KERNEL_BUILD := false
KERNEL_BIN := $(TARGET_PREBUILT_KERNEL)
else
$(warning ***************************************************************)
$(warning * *)
$(warning * No kernel source found, and no fallback prebuilt defined. *)
$(warning * Please make sure your device is properly configured to *)
$(warning * download the kernel repository to $(KERNEL_SRC))
$(warning * and add the TARGET_KERNEL_CONFIG variable to BoardConfig.mk *)
$(warning * *)
$(warning * As an alternative, define the TARGET_PREBUILT_KERNEL *)
$(warning * variable with the path to the prebuilt binary kernel image *)
$(warning * in your BoardConfig.mk file *)
$(warning * *)
$(warning ***************************************************************)
$(error "NO KERNEL")
endif
else
NEEDS_KERNEL_COPY := true
ifeq ($(TARGET_KERNEL_CONFIG),)
$(warning **********************************************************)
$(warning * Kernel source found, but no configuration was defined *)
$(warning * Please add the TARGET_KERNEL_CONFIG variable to your *)
$(warning * BoardConfig.mk file *)
$(warning **********************************************************)
# $(error "NO KERNEL CONFIG")
else
#$(info Kernel source found, building it)
FULL_KERNEL_BUILD := true
KERNEL_BIN := $(TARGET_PREBUILT_INT_KERNEL)
endif
endif
ifeq ($(FULL_KERNEL_BUILD),true)
KERNEL_HEADERS_INSTALL_DIR := $(KERNEL_OUT)/usr
KERNEL_HEADERS_INSTALL_DEPS := $(KERNEL_OUT)/.headers_install_deps
ifeq ($(NEED_KERNEL_MODULE_ROOT),true)
KERNEL_MODULES_INSTALL := root
KERNEL_MODULES_OUT := $(TARGET_ROOT_OUT)/lib/modules
KERNEL_DEPMOD_STAGING_DIR := $(call intermediates-dir-for,PACKAGING,depmod_recovery)
KERNEL_MODULE_MOUNTPOINT :=
else
KERNEL_MODULES_INSTALL := $(TARGET_COPY_OUT_VENDOR)
KERNEL_MODULES_OUT := $(TARGET_OUT_VENDOR)/lib/modules
KERNEL_DEPMOD_STAGING_DIR := $(call intermediates-dir-for,PACKAGING,depmod_vendor)
KERNEL_MODULE_MOUNTPOINT := vendor
endif
TARGET_KERNEL_CROSS_COMPILE_PREFIX := $(strip $(TARGET_KERNEL_CROSS_COMPILE_PREFIX))
ifneq ($(TARGET_KERNEL_CROSS_COMPILE_PREFIX),)
KERNEL_TOOLCHAIN_PREFIX ?= $(TARGET_KERNEL_CROSS_COMPILE_PREFIX)
else ifeq ($(KERNEL_ARCH),arm64)
KERNEL_TOOLCHAIN_PREFIX ?= aarch64-linux-androidkernel-
else ifeq ($(KERNEL_ARCH),arm)
KERNEL_TOOLCHAIN_PREFIX ?= arm-linux-androidkernel-
else ifeq ($(KERNEL_ARCH),x86)
KERNEL_TOOLCHAIN_PREFIX ?= x86_64-linux-androidkernel-
endif
ifeq ($(KERNEL_TOOLCHAIN),)
KERNEL_TOOLCHAIN_PATH := $(KERNEL_TOOLCHAIN_PREFIX)
else
ifneq ($(KERNEL_TOOLCHAIN_PREFIX),)
KERNEL_TOOLCHAIN_PATH := $(KERNEL_TOOLCHAIN)/$(KERNEL_TOOLCHAIN_PREFIX)
endif
endif
ifeq ($(TARGET_KERNEL_CLANG_COMPILE),true)
ifneq ($(TARGET_KERNEL_CLANG_VERSION),)
# Find the clang-* directory containing the specified version
KERNEL_CLANG_VERSION := $(shell find $(ANDROID_BUILD_TOP)/prebuilts/clang/host/$(HOST_OS)-x86/ -name AndroidVersion.txt -exec grep -l $(TARGET_KERNEL_CLANG_VERSION) "{}" \; | sed -e 's|/AndroidVersion.txt$$||g;s|^.*/||g')
else
# Use the default version of clang if TARGET_KERNEL_CLANG_VERSION hasn't been set by the device config
KERNEL_CLANG_VERSION := $(LLVM_PREBUILTS_VERSION)
endif
TARGET_KERNEL_CLANG_PATH ?= $(ANDROID_BUILD_TOP)/prebuilts/clang/host/$(HOST_OS)-x86/$(KERNEL_CLANG_VERSION)/bin
ifeq ($(KERNEL_ARCH),arm64)
KERNEL_CLANG_TRIPLE ?= CLANG_TRIPLE=aarch64-linux-gnu-
else ifeq ($(KERNEL_ARCH),arm)
KERNEL_CLANG_TRIPLE ?= CLANG_TRIPLE=arm-linux-gnu-
else ifeq ($(KERNEL_ARCH),x86)
KERNEL_CLANG_TRIPLE ?= CLANG_TRIPLE=x86_64-linux-gnu-
endif
endif
ifneq ($(USE_CCACHE),)
# Detect if the system already has ccache installed to use instead of the prebuilt
ccache := $(shell which ccache)
ifeq ($(ccache),)
ccache := $(ANDROID_BUILD_TOP)/prebuilts/misc/$(HOST_PREBUILT_TAG)/ccache/ccache
# Check that the executable is here.
ccache := $(strip $(wildcard $(ccache)))
endif
endif
ifeq ($(TARGET_KERNEL_CLANG_COMPILE),true)
KERNEL_CROSS_COMPILE := CROSS_COMPILE="$(KERNEL_TOOLCHAIN_PATH)"
ifeq ($(KERNEL_CC),)
KERNEL_CC := CC="$(ccache) $(TARGET_KERNEL_CLANG_PATH)/clang"
endif
else
KERNEL_CROSS_COMPILE := CROSS_COMPILE="$(ccache) $(KERNEL_TOOLCHAIN_PATH)"
endif
ccache =
ifeq ($(HOST_OS),darwin)
MAKE_FLAGS += C_INCLUDE_PATH=$(ANDROID_BUILD_TOP)/external/elfutils/libelf:/usr/local/opt/openssl/include
MAKE_FLAGS += LIBRARY_PATH=/usr/local/opt/openssl/lib
endif
ifeq ($(TARGET_KERNEL_MODULES),)
TARGET_KERNEL_MODULES := INSTALLED_KERNEL_MODULES
endif
KERNEL_ADDITIONAL_CONFIG_OUT := $(KERNEL_OUT)/.additional_config
.PHONY: force_additional_config
$(KERNEL_ADDITIONAL_CONFIG_OUT): force_additional_config
$(hide) cmp -s $(KERNEL_ADDITIONAL_CONFIG_SRC) $@ || cp $(KERNEL_ADDITIONAL_CONFIG_SRC) $@;
$(KERNEL_CONFIG): $(KERNEL_DEFCONFIG_SRC) $(KERNEL_ADDITIONAL_CONFIG_OUT)
@echo "Building Kernel Config"
$(hide) mkdir -p $(KERNEL_OUT)
$(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) VARIANT_DEFCONFIG=$(VARIANT_DEFCONFIG) SELINUX_DEFCONFIG=$(SELINUX_DEFCONFIG) $(KERNEL_DEFCONFIG)
$(hide) if [ ! -z "$(KERNEL_CONFIG_OVERRIDE)" ]; then \
echo "Overriding kernel config with '$(KERNEL_CONFIG_OVERRIDE)'"; \
echo $(KERNEL_CONFIG_OVERRIDE) >> $(KERNEL_OUT)/.config; \
$(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) oldconfig; fi
# Create defconfig build artifact
$(hide) $(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) savedefconfig
$(hide) if [ ! -z "$(KERNEL_ADDITIONAL_CONFIG)" ]; then \
echo "Using additional config '$(KERNEL_ADDITIONAL_CONFIG)'"; \
$(KERNEL_SRC)/scripts/kconfig/merge_config.sh -m -O $(KERNEL_OUT) $(KERNEL_OUT)/.config $(KERNEL_SRC)/arch/$(KERNEL_ARCH)/configs/$(KERNEL_ADDITIONAL_CONFIG); \
$(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) KCONFIG_ALLCONFIG=$(KERNEL_OUT)/.config alldefconfig; fi
.PHONY: TARGET_KERNEL_BINARIES
TARGET_KERNEL_BINARIES: $(KERNEL_CONFIG)
@echo "Building Kernel"
$(hide) rm -rf $(KERNEL_MODULES_OUT)
$(hide) mkdir -p $(KERNEL_MODULES_OUT)
$(hide) rm -rf $(KERNEL_DEPMOD_STAGING_DIR)
$(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) $(BOARD_KERNEL_IMAGE_NAME)
$(hide) if grep -q '^CONFIG_OF=y' $(KERNEL_CONFIG); then \
echo "Building DTBs"; \
$(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) dtbs; \
fi
$(hide) if grep -q '^CONFIG_MODULES=y' $(KERNEL_CONFIG); then \
echo "Building Kernel Modules"; \
$(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) modules; \
fi
.PHONY: INSTALLED_KERNEL_MODULES
INSTALLED_KERNEL_MODULES: depmod-host
$(hide) if grep -q '^CONFIG_MODULES=y' $(KERNEL_CONFIG); then \
echo "Installing Kernel Modules"; \
$(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) INSTALL_MOD_PATH=../../$(KERNEL_MODULES_INSTALL) modules_install && \
mofile=$$(find $(KERNEL_MODULES_OUT) -type f -name modules.order) && \
mpath=$$(dirname $$mofile) && \
for f in $$(find $$mpath/kernel -type f -name '*.ko'); do \
$(KERNEL_TOOLCHAIN_PATH)strip --strip-unneeded $$f; \
mv $$f $(KERNEL_MODULES_OUT); \
done && \
rm -rf $$mpath && \
mkdir -p $(KERNEL_DEPMOD_STAGING_DIR)/lib/modules/0.0/$(KERNEL_MODULE_MOUNTPOINT)/lib/modules && \
find $(KERNEL_MODULES_OUT) -name *.ko -exec cp {} $(KERNEL_DEPMOD_STAGING_DIR)/lib/modules/0.0/$(KERNEL_MODULE_MOUNTPOINT)/lib/modules \; && \
$(DEPMOD) -b $(KERNEL_DEPMOD_STAGING_DIR) 0.0 && \
sed -e 's/\(.*modules.*\):/\/\1:/g' -e 's/ \([^ ]*modules[^ ]*\)/ \/\1/g' $(KERNEL_DEPMOD_STAGING_DIR)/lib/modules/0.0/modules.dep > $(KERNEL_MODULES_OUT)/modules.dep; \
fi
$(TARGET_KERNEL_MODULES): TARGET_KERNEL_BINARIES
$(TARGET_PREBUILT_INT_KERNEL): $(TARGET_KERNEL_MODULES)
# Install kernel (uapi) headers.
#
# The dependency file serves two purposes:
# - It is a stamp indicating when the headers were last installed.
# - It contains a rule to regenerate itself when any kernel header
# files change. This rule is identical to the rule emitted by
# GCC using the M/MM flags.
#
# Note that the location of installed kernel headers changed when the
# kernel uapi system was introduced in 3.7. Unfortunately, it is not
# sufficient to test whether the uapi directories exist because some
# kernels backport patches that contain uapi headers. So we look for
# the string "version_h" in the kernel makefile which was introduced
# as a part of the uapi system (commit d183e6f570f3).
-include $(KERNEL_HEADERS_INSTALL_DEPS)
$(KERNEL_HEADERS_INSTALL_DEPS):
@echo "Building Kernel Headers"
$(hide) mkdir -p $(KERNEL_OUT)
$(hide) rm -f $@
$(hide) $(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) headers_install
$(hide) echo "$@: \\" > $@
$(hide) ( cd $(KERNEL_SRC); \
if grep -q '^version_h' 'Makefile'; then \
depdirs="arch/$(KERNEL_ARCH)/include/uapi include/uapi"; \
else \
depdirs="arch/$(KERNEL_ARCH)/include/asm include"; \
fi; \
deps="Makefile $$(find $$depdirs -type f -name '*.h')"; \
for f in $$deps; do \
echo " $(KERNEL_SRC)/$$f \\" >> $@; \
done ; \
echo "" >> $@ ; \
for f in $$deps; do \
echo "$(KERNEL_SRC)/$$f:" >> $@; \
echo "" >> $@; \
done \
)
.PHONY: INSTALLED_KERNEL_HEADERS
INSTALLED_KERNEL_HEADERS: $(KERNEL_HEADERS_INSTALL_DEPS)
# Dependencies on $(KERNEL_OUT)/usr are deprecated
$(KERNEL_HEADERS_INSTALL_DIR): $(KERNEL_HEADERS_INSTALL_DEPS)
@echo "Depending on $(KERNEL_HEADERS_INSTALL_DIR) is deprecated." 1>&2
@echo "Use INSTALLED_KERNEL_HEADERS instead." 1>&2
@exit 1
.PHONY: kerneltags
kerneltags: $(KERNEL_CONFIG)
$(hide) mkdir -p $(KERNEL_OUT)
$(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) tags
.PHONY: kernelconfig kernelxconfig kernelsavedefconfig alldefconfig
kernelconfig: KERNELCONFIG_MODE := menuconfig
kernelxconfig: KERNELCONFIG_MODE := xconfig
kernelxconfig kernelconfig:
$(hide) mkdir -p $(KERNEL_OUT)
$(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) $(KERNEL_DEFCONFIG)
env KCONFIG_NOTIMESTAMP=true \
$(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) $(KERNELCONFIG_MODE)
env KCONFIG_NOTIMESTAMP=true \
$(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) savedefconfig
cp $(KERNEL_OUT)/defconfig $(KERNEL_DEFCONFIG_SRC)
kernelsavedefconfig:
$(hide) mkdir -p $(KERNEL_OUT)
$(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) $(KERNEL_DEFCONFIG)
env KCONFIG_NOTIMESTAMP=true \
$(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) savedefconfig
cp $(KERNEL_OUT)/defconfig $(KERNEL_DEFCONFIG_SRC)
alldefconfig:
$(hide) mkdir -p $(KERNEL_OUT)
env KCONFIG_NOTIMESTAMP=true \
$(MAKE) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) alldefconfig
endif # FULL_KERNEL_BUILD
TARGET_PREBUILT_DTBO = $(PRODUCT_OUT)/dtbo/arch/$(KERNEL_ARCH)/boot/dtbo.img
$(TARGET_PREBUILT_DTBO): $(AVBTOOL)
echo -e ${CL_GRN}"Building DTBO.img"${CL_RST}
$(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(PRODUCT_OUT)/dtbo ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) $(KERNEL_DEFCONFIG)
$(MAKE) $(MAKE_FLAGS) -C $(KERNEL_SRC) O=$(PRODUCT_OUT)/dtbo ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) dtbo.img
$(AVBTOOL) add_hash_footer \
--image $@ \
--partition_size $(BOARD_DTBOIMG_PARTITION_SIZE) \
--partition_name dtbo $(INTERNAL_AVB_DTBO_SIGNING_ARGS) \
$(BOARD_AVB_DTBO_ADD_HASH_FOOTER_ARGS)
## Install it
ifeq ($(NEEDS_KERNEL_COPY),true)
file := $(INSTALLED_KERNEL_TARGET)
ALL_PREBUILT += $(file)
$(file) : $(KERNEL_BIN) | $(ACP)
$(transform-prebuilt-to-target)
ALL_PREBUILT += $(INSTALLED_KERNEL_TARGET)
endif
ifeq ($(TARGET_NEEDS_DTBOIMAGE),true)
file := $(INSTALLED_DTBOIMAGE_TARGET)
ALL_PREBUILT += $(file)
$(file) : $(TARGET_PREBUILT_DTBO) | $(ACP)
$(transform-prebuilt-to-target)
ALL_PREBUILT += $(INSTALLED_DTBOIMAGE_TARGET)
endif
.PHONY: kernel
kernel: $(INSTALLED_KERNEL_TARGET)
.PHONY: dtbo
dtbo: $(INSTALLED_DTBOIMAGE_TARGET)
endif # TARGET_NO_KERNEL
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