BoardConfigKernel.mk - device/fairphone/fp2 - Gitiles

 # Copyright (C) 2018-2019 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.
 #
 #
 # Kernel build configuration variables
 # ====================================
 #
 # These config vars are usually set in BoardConfig.mk:
 #
 #   TARGET_KERNEL_SOURCE               = Kernel source dir, optional, defaults
 #                                          to kernel/$(TARGET_DEVICE_DIR)
 #   TARGET_KERNEL_ADDITIONAL_FLAGS     = Additional make flags, 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-android- for arm64
 #                                                      x86_64-linux-android- for x86
 #
 #   TARGET_KERNEL_CLANG_COMPILE        = Compile kernel with clang, defaults to false
 #
 #   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
 #   USE_CCACHE                         = Enable ccache (global Android flag)

 BUILD_TOP := $(shell pwd)

 TARGET_AUTO_KDIR := $(shell echo $(TARGET_DEVICE_DIR) | sed -e 's/^device/kernel/g')
 TARGET_KERNEL_SOURCE ?= $(TARGET_AUTO_KDIR)
 ifneq ($(TARGET_PREBUILT_KERNEL),)
 TARGET_KERNEL_SOURCE :=
 endif

 TARGET_KERNEL_ARCH := $(strip $(TARGET_KERNEL_ARCH))
 ifeq ($(TARGET_KERNEL_ARCH),)
 KERNEL_ARCH := $(TARGET_ARCH)
 else
 KERNEL_ARCH := $(TARGET_KERNEL_ARCH)
 endif

 GCC_PREBUILTS := $(BUILD_TOP)/prebuilts/gcc/$(HOST_OS)-x86
 # arm64 toolchain
 KERNEL_TOOLCHAIN_arm64 := $(GCC_PREBUILTS)/aarch64/aarch64-linux-android-4.9/bin
 KERNEL_TOOLCHAIN_PREFIX_arm64 := aarch64-linux-android-
 # arm toolchain
 KERNEL_TOOLCHAIN_arm := $(GCC_PREBUILTS)/arm/arm-linux-androideabi-4.9/bin
 KERNEL_TOOLCHAIN_PREFIX_arm := arm-linux-androidkernel-
 # x86 toolchain
 KERNEL_TOOLCHAIN_x86 := $(GCC_PREBUILTS)/x86/x86_64-linux-android-4.9/bin
 KERNEL_TOOLCHAIN_PREFIX_x86 := x86_64-linux-android-

 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
 KERNEL_TOOLCHAIN ?= $(KERNEL_TOOLCHAIN_$(KERNEL_ARCH))
 KERNEL_TOOLCHAIN_PREFIX ?= $(KERNEL_TOOLCHAIN_PREFIX_$(KERNEL_ARCH))
 endif

 ifeq ($(KERNEL_TOOLCHAIN),)
 KERNEL_TOOLCHAIN_PATH := $(KERNEL_TOOLCHAIN_PREFIX)
 else
 KERNEL_TOOLCHAIN_PATH := $(KERNEL_TOOLCHAIN)/$(KERNEL_TOOLCHAIN_PREFIX)
 endif

 # We need to add GCC toolchain to the path no matter what
 # for tools like `as`
 KERNEL_TOOLCHAIN_PATH_gcc := $(KERNEL_TOOLCHAIN_$(KERNEL_ARCH))/$(KERNEL_TOOLCHAIN_PREFIX_$(KERNEL_ARCH))

 ifneq ($(USE_CCACHE),)
     ifneq ($(CCACHE_EXEC),)
         # Android 10+ deprecates use of a build ccache. Only system installed ones are now allowed
         CCACHE_BIN := $(CCACHE_EXEC)
     endif
 endif

 TARGET_KERNEL_CLANG_COMPILE := true

 ifeq ($(TARGET_KERNEL_CLANG_COMPILE),true)
     KERNEL_CROSS_COMPILE := CROSS_COMPILE="$(KERNEL_TOOLCHAIN_PATH)"
 else
     KERNEL_CROSS_COMPILE := CROSS_COMPILE="$(CCACHE_BIN) $(KERNEL_TOOLCHAIN_PATH)"
 endif

 # Needed for CONFIG_COMPAT_VDSO, safe to set for all arm64 builds
 ifeq ($(KERNEL_ARCH),arm64)
    KERNEL_CROSS_COMPILE += CROSS_COMPILE_ARM32="$(KERNEL_TOOLCHAIN_arm)/$(KERNEL_TOOLCHAIN_PREFIX_arm)"
 endif

 # Clear this first to prevent accidental poisoning from env
 KERNEL_MAKE_FLAGS :=

 # Add back threads, ninja cuts this to $(nproc)/2
 KERNEL_MAKE_FLAGS += -j$(shell prebuilts/tools-lineage/$(HOST_PREBUILT_TAG)/bin/nproc --all)

 ifeq ($(KERNEL_ARCH),arm)
   # Avoid "Unknown symbol _GLOBAL_OFFSET_TABLE_" errors
   KERNEL_MAKE_FLAGS += CFLAGS_MODULE="-fno-pic"
 endif

 ifeq ($(KERNEL_ARCH),arm64)
   # Avoid "unsupported RELA relocation: 311" errors (R_AARCH64_ADR_GOT_PAGE)
   KERNEL_MAKE_FLAGS += CFLAGS_MODULE="-fno-pic"
 endif

 ifeq ($(HOST_OS),darwin)
   KERNEL_MAKE_FLAGS += HOSTCFLAGS="-I$(BUILD_TOP)/external/elfutils/libelf -I/usr/local/opt/openssl/include -L/usr/local/opt/openssl/lib"
 else
   KERNEL_MAKE_FLAGS += CPATH="/usr/include:/usr/include/x86_64-linux-gnu" HOSTCFLAGS="-L/usr/lib/x86_64-linux-gnu -L/usr/lib64"
 endif

 ifneq ($(TARGET_KERNEL_ADDITIONAL_FLAGS),)
   KERNEL_MAKE_FLAGS += $(TARGET_KERNEL_ADDITIONAL_FLAGS)
 endif

 TOOLS_PATH_OVERRIDE := \
     PATH=$(BUILD_TOP)/prebuilts/tools-lineage/$(HOST_OS)-x86/bin:$$PATH \
     LD_LIBRARY_PATH=$(BUILD_TOP)/prebuilts/tools-lineage/$(HOST_OS)-x86/lib:$$LD_LIBRARY_PATH \
     PERL5LIB=$(BUILD_TOP)/prebuilts/tools-lineage/common/perl-base

 # Set DTBO image locations so the build system knows to build them
 ifeq (true,$(filter true, $(TARGET_NEEDS_DTBOIMAGE) $(BOARD_KERNEL_SEPARATED_DTBO)))
 BOARD_PREBUILT_DTBOIMAGE ?= $(TARGET_OUT_INTERMEDIATES)/DTBO_OBJ/arch/$(KERNEL_ARCH)/boot/dtbo.img
 endif

 # Set use the full path to the make command
 KERNEL_MAKE_CMD := $(BUILD_TOP)/prebuilts/build-tools/$(HOST_OS)-x86/bin/make

 # Set the full path to the gcc command
 ifeq ($(HOST_OS),darwin)
 KERNEL_HOST_TOOLCHAIN_ROOT := $(GCC_PREBUILTS)/host/i686-apple-darwin-4.2.1/bin/i686-apple-darwin11-
 else
 KERNEL_HOST_TOOLCHAIN_ROOT := $(GCC_PREBUILTS)/host/x86_64-linux-glibc2.17-4.8/bin/x86_64-linux-
 endif
 KERNEL_MAKE_FLAGS += HOSTCC=$(KERNEL_HOST_TOOLCHAIN_ROOT)gcc
 KERNEL_MAKE_FLAGS += HOSTCXX=$(KERNEL_HOST_TOOLCHAIN_ROOT)g++

 # Since Linux 4.16, flex and bison are required
 KERNEL_MAKE_FLAGS += LEX=$(BUILD_TOP)/prebuilts/build-tools/$(HOST_OS)-x86/bin/flex
 KERNEL_MAKE_FLAGS += YACC=$(BUILD_TOP)/prebuilts/build-tools/$(HOST_OS)-x86/bin/bison
 TOOLS_PATH_OVERRIDE += BISON_PKGDATADIR=$(BUILD_TOP)/prebuilts/build-tools/common/bison

 # Set the out dir for the kernel's O= arg
 # This needs to be an absolute path, so only set this if the standard out dir isn't used
 OUT_DIR_PREFIX := $(shell echo $(OUT_DIR) | sed -e 's|/target/.*$$||g')
 KERNEL_BUILD_OUT_PREFIX :=
 ifeq ($(OUT_DIR_PREFIX),out)
 KERNEL_BUILD_OUT_PREFIX := $(BUILD_TOP)/
 endif
	# Copyright (C) 2018-2019 The LineageOS Project
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	#
	#
	# Kernel build configuration variables
	# ====================================
	#
	# These config vars are usually set in BoardConfig.mk:
	#
	# TARGET_KERNEL_SOURCE = Kernel source dir, optional, defaults
	# to kernel/$(TARGET_DEVICE_DIR)
	# TARGET_KERNEL_ADDITIONAL_FLAGS = Additional make flags, 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-android- for arm64
	# x86_64-linux-android- for x86
	#
	# TARGET_KERNEL_CLANG_COMPILE = Compile kernel with clang, defaults to false
	#
	# 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
	# USE_CCACHE = Enable ccache (global Android flag)

	BUILD_TOP := $(shell pwd)

	TARGET_AUTO_KDIR := $(shell echo $(TARGET_DEVICE_DIR) \| sed -e 's/^device/kernel/g')
	TARGET_KERNEL_SOURCE ?= $(TARGET_AUTO_KDIR)
	ifneq ($(TARGET_PREBUILT_KERNEL),)
	TARGET_KERNEL_SOURCE :=
	endif

	TARGET_KERNEL_ARCH := $(strip $(TARGET_KERNEL_ARCH))
	ifeq ($(TARGET_KERNEL_ARCH),)
	KERNEL_ARCH := $(TARGET_ARCH)
	else
	KERNEL_ARCH := $(TARGET_KERNEL_ARCH)
	endif

	GCC_PREBUILTS := $(BUILD_TOP)/prebuilts/gcc/$(HOST_OS)-x86
	# arm64 toolchain
	KERNEL_TOOLCHAIN_arm64 := $(GCC_PREBUILTS)/aarch64/aarch64-linux-android-4.9/bin
	KERNEL_TOOLCHAIN_PREFIX_arm64 := aarch64-linux-android-
	# arm toolchain
	KERNEL_TOOLCHAIN_arm := $(GCC_PREBUILTS)/arm/arm-linux-androideabi-4.9/bin
	KERNEL_TOOLCHAIN_PREFIX_arm := arm-linux-androidkernel-
	# x86 toolchain
	KERNEL_TOOLCHAIN_x86 := $(GCC_PREBUILTS)/x86/x86_64-linux-android-4.9/bin
	KERNEL_TOOLCHAIN_PREFIX_x86 := x86_64-linux-android-

	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
	KERNEL_TOOLCHAIN ?= $(KERNEL_TOOLCHAIN_$(KERNEL_ARCH))
	KERNEL_TOOLCHAIN_PREFIX ?= $(KERNEL_TOOLCHAIN_PREFIX_$(KERNEL_ARCH))
	endif

	ifeq ($(KERNEL_TOOLCHAIN),)
	KERNEL_TOOLCHAIN_PATH := $(KERNEL_TOOLCHAIN_PREFIX)
	else
	KERNEL_TOOLCHAIN_PATH := $(KERNEL_TOOLCHAIN)/$(KERNEL_TOOLCHAIN_PREFIX)
	endif

	# We need to add GCC toolchain to the path no matter what
	# for tools like `as`
	KERNEL_TOOLCHAIN_PATH_gcc := $(KERNEL_TOOLCHAIN_$(KERNEL_ARCH))/$(KERNEL_TOOLCHAIN_PREFIX_$(KERNEL_ARCH))

	ifneq ($(USE_CCACHE),)
	ifneq ($(CCACHE_EXEC),)
	# Android 10+ deprecates use of a build ccache. Only system installed ones are now allowed
	CCACHE_BIN := $(CCACHE_EXEC)
	endif
	endif

	TARGET_KERNEL_CLANG_COMPILE := true

	ifeq ($(TARGET_KERNEL_CLANG_COMPILE),true)
	KERNEL_CROSS_COMPILE := CROSS_COMPILE="$(KERNEL_TOOLCHAIN_PATH)"
	else
	KERNEL_CROSS_COMPILE := CROSS_COMPILE="$(CCACHE_BIN) $(KERNEL_TOOLCHAIN_PATH)"
	endif

	# Needed for CONFIG_COMPAT_VDSO, safe to set for all arm64 builds
	ifeq ($(KERNEL_ARCH),arm64)
	KERNEL_CROSS_COMPILE += CROSS_COMPILE_ARM32="$(KERNEL_TOOLCHAIN_arm)/$(KERNEL_TOOLCHAIN_PREFIX_arm)"
	endif

	# Clear this first to prevent accidental poisoning from env
	KERNEL_MAKE_FLAGS :=

	# Add back threads, ninja cuts this to $(nproc)/2
	KERNEL_MAKE_FLAGS += -j$(shell prebuilts/tools-lineage/$(HOST_PREBUILT_TAG)/bin/nproc --all)

	ifeq ($(KERNEL_ARCH),arm)
	# Avoid "Unknown symbol _GLOBAL_OFFSET_TABLE_" errors
	KERNEL_MAKE_FLAGS += CFLAGS_MODULE="-fno-pic"
	endif

	ifeq ($(KERNEL_ARCH),arm64)
	# Avoid "unsupported RELA relocation: 311" errors (R_AARCH64_ADR_GOT_PAGE)
	KERNEL_MAKE_FLAGS += CFLAGS_MODULE="-fno-pic"
	endif

	ifeq ($(HOST_OS),darwin)
	KERNEL_MAKE_FLAGS += HOSTCFLAGS="-I$(BUILD_TOP)/external/elfutils/libelf -I/usr/local/opt/openssl/include -L/usr/local/opt/openssl/lib"
	else
	KERNEL_MAKE_FLAGS += CPATH="/usr/include:/usr/include/x86_64-linux-gnu" HOSTCFLAGS="-L/usr/lib/x86_64-linux-gnu -L/usr/lib64"
	endif

	ifneq ($(TARGET_KERNEL_ADDITIONAL_FLAGS),)
	KERNEL_MAKE_FLAGS += $(TARGET_KERNEL_ADDITIONAL_FLAGS)
	endif

	TOOLS_PATH_OVERRIDE := \
	PATH=$(BUILD_TOP)/prebuilts/tools-lineage/$(HOST_OS)-x86/bin:$$PATH \
	LD_LIBRARY_PATH=$(BUILD_TOP)/prebuilts/tools-lineage/$(HOST_OS)-x86/lib:$$LD_LIBRARY_PATH \
	PERL5LIB=$(BUILD_TOP)/prebuilts/tools-lineage/common/perl-base

	# Set DTBO image locations so the build system knows to build them
	ifeq (true,$(filter true, $(TARGET_NEEDS_DTBOIMAGE) $(BOARD_KERNEL_SEPARATED_DTBO)))
	BOARD_PREBUILT_DTBOIMAGE ?= $(TARGET_OUT_INTERMEDIATES)/DTBO_OBJ/arch/$(KERNEL_ARCH)/boot/dtbo.img
	endif

	# Set use the full path to the make command
	KERNEL_MAKE_CMD := $(BUILD_TOP)/prebuilts/build-tools/$(HOST_OS)-x86/bin/make

	# Set the full path to the gcc command
	ifeq ($(HOST_OS),darwin)
	KERNEL_HOST_TOOLCHAIN_ROOT := $(GCC_PREBUILTS)/host/i686-apple-darwin-4.2.1/bin/i686-apple-darwin11-
	else
	KERNEL_HOST_TOOLCHAIN_ROOT := $(GCC_PREBUILTS)/host/x86_64-linux-glibc2.17-4.8/bin/x86_64-linux-
	endif
	KERNEL_MAKE_FLAGS += HOSTCC=$(KERNEL_HOST_TOOLCHAIN_ROOT)gcc
	KERNEL_MAKE_FLAGS += HOSTCXX=$(KERNEL_HOST_TOOLCHAIN_ROOT)g++

	# Since Linux 4.16, flex and bison are required
	KERNEL_MAKE_FLAGS += LEX=$(BUILD_TOP)/prebuilts/build-tools/$(HOST_OS)-x86/bin/flex
	KERNEL_MAKE_FLAGS += YACC=$(BUILD_TOP)/prebuilts/build-tools/$(HOST_OS)-x86/bin/bison
	TOOLS_PATH_OVERRIDE += BISON_PKGDATADIR=$(BUILD_TOP)/prebuilts/build-tools/common/bison

	# Set the out dir for the kernel's O= arg
	# This needs to be an absolute path, so only set this if the standard out dir isn't used
	OUT_DIR_PREFIX := $(shell echo $(OUT_DIR) \| sed -e 's\|/target/.*$$\|\|g')
	KERNEL_BUILD_OUT_PREFIX :=
	ifeq ($(OUT_DIR_PREFIX),out)
	KERNEL_BUILD_OUT_PREFIX := $(BUILD_TOP)/
	endif