493ad4b8a5
The GCC toolchains are no longer added to the path by default, so we need to hardcode the full paths for these. Also set variables for every arch, and then set the toolchain to the arch specific var. This is so we can set the ARM32 cross compile flag for vDSO32 enabled kernels. Change-Id: I7e099a26a17f4a3cc9be6232a26c671e8fcfbdef
151 lines
6.1 KiB
Makefile
151 lines
6.1 KiB
Makefile
# Copyright (C) 2018 The LineageOS Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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#
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# Kernel build configuration variables
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# ====================================
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#
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# These config vars are usually set in BoardConfig.mk:
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#
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# TARGET_KERNEL_SOURCE = Kernel source dir, optional, defaults
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# to kernel/$(TARGET_DEVICE_DIR)
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# TARGET_KERNEL_ADDITIONAL_FLAGS = Additional make flags, optional
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# TARGET_KERNEL_ARCH = Kernel Arch
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# TARGET_KERNEL_CROSS_COMPILE_PREFIX = Compiler prefix (e.g. arm-eabi-)
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# defaults to arm-linux-androidkernel- for arm
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# aarch64-linux-android- for arm64
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# x86_64-linux-android- for x86
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#
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# TARGET_KERNEL_CLANG_COMPILE = Compile kernel with clang, defaults to false
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#
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# KERNEL_TOOLCHAIN_PREFIX = Overrides TARGET_KERNEL_CROSS_COMPILE_PREFIX,
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# Set this var in shell to override
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# toolchain specified in BoardConfig.mk
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# KERNEL_TOOLCHAIN = Path to toolchain, if unset, assumes
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# TARGET_KERNEL_CROSS_COMPILE_PREFIX
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# is in PATH
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# USE_CCACHE = Enable ccache (global Android flag)
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BUILD_TOP := $(shell pwd)
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TARGET_AUTO_KDIR := $(shell echo $(TARGET_DEVICE_DIR) | sed -e 's/^device/kernel/g')
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TARGET_KERNEL_SOURCE ?= $(TARGET_AUTO_KDIR)
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ifneq ($(TARGET_PREBUILT_KERNEL),)
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TARGET_KERNEL_SOURCE :=
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endif
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TARGET_KERNEL_ARCH := $(strip $(TARGET_KERNEL_ARCH))
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ifeq ($(TARGET_KERNEL_ARCH),)
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KERNEL_ARCH := $(TARGET_ARCH)
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else
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KERNEL_ARCH := $(TARGET_KERNEL_ARCH)
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endif
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GCC_PREBUILTS := $(BUILD_TOP)/prebuilts/gcc/$(HOST_OS)-x86
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# arm64 toolchain
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KERNEL_TOOLCHAIN_arm64 := $(GCC_PREBUILTS)/aarch64/aarch64-linux-android-4.9/bin
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KERNEL_TOOLCHAIN_PREFIX_arm64 := aarch64-linux-android-
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# arm toolchain
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KERNEL_TOOLCHAIN_arm := $(GCC_PREBUILTS)/arm/arm-linux-androideabi-4.9/bin
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KERNEL_TOOLCHAIN_PREFIX_arm := arm-linux-androidkernel-
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# x86 toolchain
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KERNEL_TOOLCHAIN_x86 := $(GCC_PREBUILTS)/x86/x86_64-linux-android-4.9/bin
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KERNEL_TOOLCHAIN_PREFIX_x86 := x86_64-linux-android-
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TARGET_KERNEL_CROSS_COMPILE_PREFIX := $(strip $(TARGET_KERNEL_CROSS_COMPILE_PREFIX))
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ifneq ($(TARGET_KERNEL_CROSS_COMPILE_PREFIX),)
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KERNEL_TOOLCHAIN_PREFIX ?= $(TARGET_KERNEL_CROSS_COMPILE_PREFIX)
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else
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KERNEL_TOOLCHAIN ?= $(KERNEL_TOOLCHAIN_$(KERNEL_ARCH))
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KERNEL_TOOLCHAIN_PREFIX ?= $(KERNEL_TOOLCHAIN_PREFIX_$(KERNEL_ARCH))
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endif
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ifeq ($(KERNEL_TOOLCHAIN),)
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KERNEL_TOOLCHAIN_PATH := $(KERNEL_TOOLCHAIN_PREFIX)
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else
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KERNEL_TOOLCHAIN_PATH := $(KERNEL_TOOLCHAIN)/$(KERNEL_TOOLCHAIN_PREFIX)
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endif
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ifneq ($(USE_CCACHE),)
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ifneq ($(CCACHE_EXEC),)
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# Android 10+ deprecates use of a build ccache. Only system installed ones are now allowed
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CCACHE_BIN := $(CCACHE_EXEC)
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endif
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endif
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ifeq ($(TARGET_KERNEL_CLANG_COMPILE),true)
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KERNEL_CROSS_COMPILE := CROSS_COMPILE="$(KERNEL_TOOLCHAIN_PATH)"
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else
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KERNEL_CROSS_COMPILE := CROSS_COMPILE="$(CCACHE_BIN) $(KERNEL_TOOLCHAIN_PATH)"
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endif
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# Needed for CONFIG_COMPAT_VDSO, safe to set for all arm64 builds
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ifeq ($(KERNEL_ARCH),arm64)
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KERNEL_CROSS_COMPILE += CROSS_COMPILE_ARM32="$(KERNEL_TOOLCHAIN_arm)/$(KERNEL_TOOLCHAIN_PREFIX_arm)"
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endif
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# Clear this first to prevent accidental poisoning from env
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KERNEL_MAKE_FLAGS :=
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# Add back threads, ninja cuts this to $(nproc)/2
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KERNEL_MAKE_FLAGS += -j$$(nproc)
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ifeq ($(KERNEL_ARCH),arm)
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# Avoid "Unknown symbol _GLOBAL_OFFSET_TABLE_" errors
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KERNEL_MAKE_FLAGS += CFLAGS_MODULE="-fno-pic"
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endif
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ifeq ($(KERNEL_ARCH),arm64)
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# Avoid "unsupported RELA relocation: 311" errors (R_AARCH64_ADR_GOT_PAGE)
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KERNEL_MAKE_FLAGS += CFLAGS_MODULE="-fno-pic"
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endif
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ifeq ($(HOST_OS),darwin)
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KERNEL_MAKE_FLAGS += C_INCLUDE_PATH=$(BUILD_TOP)/external/elfutils/libelf:/usr/local/opt/openssl/include
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KERNEL_MAKE_FLAGS += LIBRARY_PATH=/usr/local/opt/openssl/lib
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else
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KERNEL_MAKE_FLAGS += C_INCLUDE_PATH=$(BUILD_TOP)/prebuilts/openssl/$(HOST_OS)-x86/1.1.1/include
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KERNEL_MAKE_FLAGS += LIBRARY_PATH=$(BUILD_TOP)/prebuilts/openssl/$(HOST_OS)-x86/1.1.1/lib/x86_64-linux-gnu
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KERNEL_MAKE_FLAGS += HOSTCFLAGS="-L $(BUILD_TOP)/prebuilts/openssl/$(HOST_OS)-x86/1.1.1/lib/x86_64-linux-gnu"
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KERNEL_MAKE_FLAGS += HOSTLDFLAGS="-L $(BUILD_TOP)/prebuilts/openssl/$(HOST_OS)-x86/1.1.1/lib/x86_64-linux-gnu"
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endif
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ifneq ($(TARGET_KERNEL_ADDITIONAL_FLAGS),)
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KERNEL_MAKE_FLAGS += $(TARGET_KERNEL_ADDITIONAL_FLAGS)
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endif
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TOOLS_PATH_OVERRIDE := \
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PATH=$(BUILD_TOP)/prebuilts/tools-lineage/$(HOST_OS)-x86/bin:$$PATH \
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LD_LIBRARY_PATH=$(BUILD_TOP)/prebuilts/tools-lineage/$(HOST_OS)-x86/lib:$$LD_LIBRARY_PATH \
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PERL5LIB=$(BUILD_TOP)/prebuilts/tools-lineage/$(HOST_OS)-x86/lib/perl-base
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# Set DTBO image locations so the build system knows to build them
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ifeq ($(TARGET_NEEDS_DTBOIMAGE),true)
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BOARD_PREBUILT_DTBOIMAGE ?= $(PRODUCT_OUT)/dtbo/arch/$(KERNEL_ARCH)/boot/dtbo.img
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else ifeq ($(BOARD_KERNEL_SEPARATED_DTBO),true)
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BOARD_PREBUILT_DTBOIMAGE ?= $(PRODUCT_OUT)/dtbo-pre.img
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endif
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# Set use the full path to the make command
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KERNEL_MAKE_CMD := $(BUILD_TOP)/prebuilts/build-tools/$(HOST_OS)-x86/bin/make
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# Set the full path to the gcc command
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ifeq ($(HOST_OS),darwin)
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KERNEL_HOST_TOOLCHAIN_ROOT := $(GCC_PREBUILTS)/host/i686-apple-darwin-4.2.1/bin/i686-apple-darwin11-
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else
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KERNEL_HOST_TOOLCHAIN_ROOT := $(GCC_PREBUILTS)/host/x86_64-linux-glibc2.17-4.8/bin/x86_64-linux-
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endif
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KERNEL_MAKE_FLAGS += HOSTCC=$(KERNEL_HOST_TOOLCHAIN_ROOT)gcc
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KERNEL_MAKE_FLAGS += HOSTCXX=$(KERNEL_HOST_TOOLCHAIN_ROOT)g++
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