Bruno Martins | 63d13c3 | 2020-09-24 11:51:33 +0100 | [diff] [blame] | 1 | # Copyright (C) 2018-2020 The LineageOS Project |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 2 | # |
| 3 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | # you may not use this file except in compliance with the License. |
| 5 | # You may obtain a copy of the License at |
| 6 | # |
| 7 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | # |
| 9 | # Unless required by applicable law or agreed to in writing, software |
| 10 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | # See the License for the specific language governing permissions and |
| 13 | # limitations under the License. |
| 14 | # |
| 15 | # |
| 16 | # Kernel build configuration variables |
| 17 | # ==================================== |
| 18 | # |
| 19 | # These config vars are usually set in BoardConfig.mk: |
| 20 | # |
| 21 | # TARGET_KERNEL_SOURCE = Kernel source dir, optional, defaults |
| 22 | # to kernel/$(TARGET_DEVICE_DIR) |
Rashed Abdel-Tawab | 3254caf | 2018-06-15 22:45:53 -0700 | [diff] [blame] | 23 | # TARGET_KERNEL_ADDITIONAL_FLAGS = Additional make flags, optional |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 24 | # TARGET_KERNEL_ARCH = Kernel Arch |
| 25 | # TARGET_KERNEL_CROSS_COMPILE_PREFIX = Compiler prefix (e.g. arm-eabi-) |
| 26 | # defaults to arm-linux-androidkernel- for arm |
dianlujitao | bd16a8e | 2019-09-08 12:44:49 +0800 | [diff] [blame] | 27 | # aarch64-linux-android- for arm64 |
| 28 | # x86_64-linux-android- for x86 |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 29 | # |
Alexander Koskovich | e8e46e6 | 2022-03-07 11:29:34 -0700 | [diff] [blame] | 30 | # TARGET_KERNEL_CLANG_COMPILE = Compile kernel with clang, defaults to true |
Park Ju Hyung | 4e345c1 | 2020-01-06 10:53:00 +0900 | [diff] [blame] | 31 | # TARGET_KERNEL_NEW_GCC_COMPILE = Compile kernel with newer version GCC, defaults to false |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 32 | # |
| 33 | # KERNEL_TOOLCHAIN_PREFIX = Overrides TARGET_KERNEL_CROSS_COMPILE_PREFIX, |
| 34 | # Set this var in shell to override |
| 35 | # toolchain specified in BoardConfig.mk |
| 36 | # KERNEL_TOOLCHAIN = Path to toolchain, if unset, assumes |
| 37 | # TARGET_KERNEL_CROSS_COMPILE_PREFIX |
| 38 | # is in PATH |
| 39 | # USE_CCACHE = Enable ccache (global Android flag) |
| 40 | |
| 41 | BUILD_TOP := $(shell pwd) |
| 42 | |
| 43 | TARGET_AUTO_KDIR := $(shell echo $(TARGET_DEVICE_DIR) | sed -e 's/^device/kernel/g') |
| 44 | TARGET_KERNEL_SOURCE ?= $(TARGET_AUTO_KDIR) |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 45 | |
| 46 | TARGET_KERNEL_ARCH := $(strip $(TARGET_KERNEL_ARCH)) |
| 47 | ifeq ($(TARGET_KERNEL_ARCH),) |
| 48 | KERNEL_ARCH := $(TARGET_ARCH) |
| 49 | else |
| 50 | KERNEL_ARCH := $(TARGET_KERNEL_ARCH) |
| 51 | endif |
| 52 | |
Arian | e6ead02 | 2021-10-05 22:28:51 +0200 | [diff] [blame] | 53 | CLANG_PREBUILTS := $(BUILD_TOP)/prebuilts/clang/host/$(HOST_OS)-x86/clang-r416183b1 |
Bruno Martins | 63d13c3 | 2020-09-24 11:51:33 +0100 | [diff] [blame] | 54 | GCC_PREBUILTS := $(BUILD_TOP)/prebuilts/gcc/$(HOST_PREBUILT_TAG) |
Park Ju Hyung | 4e345c1 | 2020-01-06 10:53:00 +0900 | [diff] [blame] | 55 | ifeq ($(TARGET_KERNEL_NEW_GCC_COMPILE),true) |
| 56 | ifeq ($(TARGET_KERNEL_CLANG_COMPILE),true) |
| 57 | $(error TARGET_KERNEL_NEW_GCC_COMPILE cannot be used with TARGET_KERNEL_CLANG_COMPILE!) |
| 58 | endif |
| 59 | # arm64 toolchain |
| 60 | KERNEL_TOOLCHAIN_arm64 := $(GCC_PREBUILTS)/aarch64/aarch64-elf/bin |
| 61 | KERNEL_TOOLCHAIN_PREFIX_arm64 := aarch64-elf- |
| 62 | # arm toolchain |
| 63 | KERNEL_TOOLCHAIN_arm := $(GCC_PREBUILTS)/arm/arm-eabi/bin |
| 64 | KERNEL_TOOLCHAIN_PREFIX_arm := arm-eabi- |
| 65 | else |
| 66 | # arm64 toolchain |
| 67 | KERNEL_TOOLCHAIN_arm64 := $(GCC_PREBUILTS)/aarch64/aarch64-linux-android-4.9/bin |
| 68 | KERNEL_TOOLCHAIN_PREFIX_arm64 := aarch64-linux-android- |
| 69 | # arm toolchain |
| 70 | KERNEL_TOOLCHAIN_arm := $(GCC_PREBUILTS)/arm/arm-linux-androideabi-4.9/bin |
| 71 | KERNEL_TOOLCHAIN_PREFIX_arm := arm-linux-androidkernel- |
| 72 | # x86 toolchain |
| 73 | KERNEL_TOOLCHAIN_x86 := $(GCC_PREBUILTS)/x86/x86_64-linux-android-4.9/bin |
| 74 | KERNEL_TOOLCHAIN_PREFIX_x86 := x86_64-linux-android- |
| 75 | endif |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 76 | TARGET_KERNEL_CROSS_COMPILE_PREFIX := $(strip $(TARGET_KERNEL_CROSS_COMPILE_PREFIX)) |
| 77 | ifneq ($(TARGET_KERNEL_CROSS_COMPILE_PREFIX),) |
| 78 | KERNEL_TOOLCHAIN_PREFIX ?= $(TARGET_KERNEL_CROSS_COMPILE_PREFIX) |
Rashed Abdel-Tawab | 493ad4b | 2019-09-06 14:26:34 -0700 | [diff] [blame] | 79 | else |
| 80 | KERNEL_TOOLCHAIN ?= $(KERNEL_TOOLCHAIN_$(KERNEL_ARCH)) |
| 81 | KERNEL_TOOLCHAIN_PREFIX ?= $(KERNEL_TOOLCHAIN_PREFIX_$(KERNEL_ARCH)) |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 82 | endif |
| 83 | |
| 84 | ifeq ($(KERNEL_TOOLCHAIN),) |
| 85 | KERNEL_TOOLCHAIN_PATH := $(KERNEL_TOOLCHAIN_PREFIX) |
Rashed Abdel-Tawab | 493ad4b | 2019-09-06 14:26:34 -0700 | [diff] [blame] | 86 | else |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 87 | KERNEL_TOOLCHAIN_PATH := $(KERNEL_TOOLCHAIN)/$(KERNEL_TOOLCHAIN_PREFIX) |
| 88 | endif |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 89 | |
Rashed Abdel-Tawab | c648519 | 2019-09-10 08:38:34 -0700 | [diff] [blame] | 90 | # We need to add GCC toolchain to the path no matter what |
| 91 | # for tools like `as` |
Alessandro Astone | 8fb7cda | 2021-12-11 01:49:53 +0100 | [diff] [blame] | 92 | KERNEL_TOOLCHAIN_PATH_gcc := $(KERNEL_TOOLCHAIN_$(KERNEL_ARCH)) |
Rashed Abdel-Tawab | c648519 | 2019-09-10 08:38:34 -0700 | [diff] [blame] | 93 | |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 94 | ifneq ($(USE_CCACHE),) |
Rashed Abdel-Tawab | 3ad0e0d | 2019-09-05 21:26:19 -0700 | [diff] [blame] | 95 | ifneq ($(CCACHE_EXEC),) |
| 96 | # Android 10+ deprecates use of a build ccache. Only system installed ones are now allowed |
| 97 | CCACHE_BIN := $(CCACHE_EXEC) |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 98 | endif |
| 99 | endif |
| 100 | |
Alexander Koskovich | e8e46e6 | 2022-03-07 11:29:34 -0700 | [diff] [blame] | 101 | ifneq ($(TARGET_KERNEL_CLANG_COMPILE),false) |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 102 | KERNEL_CROSS_COMPILE := CROSS_COMPILE="$(KERNEL_TOOLCHAIN_PATH)" |
| 103 | else |
| 104 | KERNEL_CROSS_COMPILE := CROSS_COMPILE="$(CCACHE_BIN) $(KERNEL_TOOLCHAIN_PATH)" |
| 105 | endif |
| 106 | |
| 107 | # Needed for CONFIG_COMPAT_VDSO, safe to set for all arm64 builds |
| 108 | ifeq ($(KERNEL_ARCH),arm64) |
Rashed Abdel-Tawab | 493ad4b | 2019-09-06 14:26:34 -0700 | [diff] [blame] | 109 | KERNEL_CROSS_COMPILE += CROSS_COMPILE_ARM32="$(KERNEL_TOOLCHAIN_arm)/$(KERNEL_TOOLCHAIN_PREFIX_arm)" |
LibXZR | 7e0bb36 | 2021-08-04 11:31:47 +0800 | [diff] [blame] | 110 | KERNEL_CROSS_COMPILE += CROSS_COMPILE_COMPAT="$(KERNEL_TOOLCHAIN_arm)/$(KERNEL_TOOLCHAIN_PREFIX_arm)" |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 111 | endif |
| 112 | |
dianlujitao | 4fae788 | 2020-09-16 10:40:57 +0800 | [diff] [blame] | 113 | prebuilt_build_tools_lineage := prebuilts/tools-lineage |
| 114 | prebuilt_build_tools_lineage_bin := $(prebuilt_build_tools_lineage)/$(HOST_PREBUILT_TAG)/bin |
| 115 | |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 116 | # Clear this first to prevent accidental poisoning from env |
| 117 | KERNEL_MAKE_FLAGS := |
| 118 | |
Ethan Chen | 995aff2 | 2019-02-09 14:59:56 -0800 | [diff] [blame] | 119 | # Add back threads, ninja cuts this to $(nproc)/2 |
Bruno Martins | 63d13c3 | 2020-09-24 11:51:33 +0100 | [diff] [blame] | 120 | KERNEL_MAKE_FLAGS += -j$(shell nproc --all) |
Ethan Chen | 995aff2 | 2019-02-09 14:59:56 -0800 | [diff] [blame] | 121 | |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 122 | ifeq ($(KERNEL_ARCH),arm) |
| 123 | # Avoid "Unknown symbol _GLOBAL_OFFSET_TABLE_" errors |
| 124 | KERNEL_MAKE_FLAGS += CFLAGS_MODULE="-fno-pic" |
| 125 | endif |
| 126 | |
| 127 | ifeq ($(KERNEL_ARCH),arm64) |
| 128 | # Avoid "unsupported RELA relocation: 311" errors (R_AARCH64_ADR_GOT_PAGE) |
| 129 | KERNEL_MAKE_FLAGS += CFLAGS_MODULE="-fno-pic" |
| 130 | endif |
| 131 | |
| 132 | ifeq ($(HOST_OS),darwin) |
Bruno Martins | 63d13c3 | 2020-09-24 11:51:33 +0100 | [diff] [blame] | 133 | KERNEL_MAKE_FLAGS += HOSTCFLAGS="-I$(BUILD_TOP)/external/elfutils/libelf -I/usr/local/opt/openssl/include -L/usr/local/opt/openssl/lib" |
Rashed Abdel-Tawab | d7e24e3 | 2019-09-05 21:29:27 -0700 | [diff] [blame] | 134 | else |
Bruno Martins | 63d13c3 | 2020-09-24 11:51:33 +0100 | [diff] [blame] | 135 | KERNEL_MAKE_FLAGS += CPATH="/usr/include:/usr/include/x86_64-linux-gnu" HOSTCFLAGS="-L/usr/lib/x86_64-linux-gnu -L/usr/lib64" |
Rashed Abdel-Tawab | a836d79 | 2018-09-20 15:19:57 -0700 | [diff] [blame] | 136 | endif |
Rashed Abdel-Tawab | 06539d4 | 2019-09-27 06:46:05 -0700 | [diff] [blame] | 137 | |
Rashed Abdel-Tawab | 3254caf | 2018-06-15 22:45:53 -0700 | [diff] [blame] | 138 | ifneq ($(TARGET_KERNEL_ADDITIONAL_FLAGS),) |
| 139 | KERNEL_MAKE_FLAGS += $(TARGET_KERNEL_ADDITIONAL_FLAGS) |
| 140 | endif |
| 141 | |
LuK1337 | 9d8578b | 2019-09-30 17:55:58 +0200 | [diff] [blame] | 142 | TOOLS_PATH_OVERRIDE := \ |
Bruno Martins | 63d13c3 | 2020-09-24 11:51:33 +0100 | [diff] [blame] | 143 | PATH=$(BUILD_TOP)/prebuilts/tools-lineage/$(HOST_PREBUILT_TAG)/bin:$$PATH \ |
| 144 | LD_LIBRARY_PATH=$(BUILD_TOP)/prebuilts/tools-lineage/$(HOST_PREBUILT_TAG)/lib:$$LD_LIBRARY_PATH \ |
| 145 | PERL5LIB=$(BUILD_TOP)/prebuilts/tools-lineage/common/perl-base |
Rashed Abdel-Tawab | dfc3d18 | 2019-09-06 10:44:50 -0700 | [diff] [blame] | 146 | |
Rashed Abdel-Tawab | 60fe935 | 2019-05-16 14:01:19 -0700 | [diff] [blame] | 147 | # Set DTBO image locations so the build system knows to build them |
Luca Stefani | fe00ea9 | 2020-08-02 19:08:31 +0200 | [diff] [blame] | 148 | ifeq (true,$(filter true, $(TARGET_NEEDS_DTBOIMAGE) $(BOARD_KERNEL_SEPARATED_DTBO))) |
| 149 | BOARD_PREBUILT_DTBOIMAGE ?= $(TARGET_OUT_INTERMEDIATES)/DTBO_OBJ/arch/$(KERNEL_ARCH)/boot/dtbo.img |
Rashed Abdel-Tawab | 60fe935 | 2019-05-16 14:01:19 -0700 | [diff] [blame] | 150 | endif |
Rashed Abdel-Tawab | fb35b9d | 2019-09-05 21:21:13 -0700 | [diff] [blame] | 151 | |
| 152 | # Set use the full path to the make command |
Bruno Martins | 63d13c3 | 2020-09-24 11:51:33 +0100 | [diff] [blame] | 153 | KERNEL_MAKE_CMD := $(BUILD_TOP)/prebuilts/build-tools/$(HOST_PREBUILT_TAG)/bin/make |
Rashed Abdel-Tawab | 21ee598 | 2019-09-05 21:24:07 -0700 | [diff] [blame] | 154 | |
Bruno Martins | 63d13c3 | 2020-09-24 11:51:33 +0100 | [diff] [blame] | 155 | # Set the full path to the gcc command |
| 156 | ifeq ($(HOST_OS),darwin) |
| 157 | KERNEL_HOST_TOOLCHAIN_ROOT := $(GCC_PREBUILTS)/host/i686-apple-darwin-4.2.1/bin/i686-apple-darwin11- |
| 158 | else |
| 159 | KERNEL_HOST_TOOLCHAIN_ROOT := $(GCC_PREBUILTS)/host/x86_64-linux-glibc2.17-4.8/bin/x86_64-linux- |
| 160 | endif |
| 161 | KERNEL_MAKE_FLAGS += HOSTCC=$(KERNEL_HOST_TOOLCHAIN_ROOT)gcc |
| 162 | KERNEL_MAKE_FLAGS += HOSTCXX=$(KERNEL_HOST_TOOLCHAIN_ROOT)g++ |
Rashed Abdel-Tawab | ba5ea35 | 2019-09-07 17:01:13 -0700 | [diff] [blame] | 163 | |
dianlujitao | a24144f | 2020-03-11 19:05:29 +0800 | [diff] [blame] | 164 | # Since Linux 4.16, flex and bison are required |
Bruno Martins | 63d13c3 | 2020-09-24 11:51:33 +0100 | [diff] [blame] | 165 | KERNEL_MAKE_FLAGS += LEX=$(BUILD_TOP)/prebuilts/build-tools/$(HOST_PREBUILT_TAG)/bin/flex |
| 166 | KERNEL_MAKE_FLAGS += YACC=$(BUILD_TOP)/prebuilts/build-tools/$(HOST_PREBUILT_TAG)/bin/bison |
Alessandro Astone | ceb7086 | 2020-09-13 19:43:00 +0200 | [diff] [blame] | 167 | KERNEL_MAKE_FLAGS += M4=$(BUILD_TOP)/prebuilts/build-tools/$(HOST_OS)-x86/bin/m4 |
dianlujitao | a24144f | 2020-03-11 19:05:29 +0800 | [diff] [blame] | 168 | TOOLS_PATH_OVERRIDE += BISON_PKGDATADIR=$(BUILD_TOP)/prebuilts/build-tools/common/bison |
| 169 | |
Rashed Abdel-Tawab | ba5ea35 | 2019-09-07 17:01:13 -0700 | [diff] [blame] | 170 | # Set the out dir for the kernel's O= arg |
| 171 | # This needs to be an absolute path, so only set this if the standard out dir isn't used |
| 172 | OUT_DIR_PREFIX := $(shell echo $(OUT_DIR) | sed -e 's|/target/.*$$||g') |
| 173 | KERNEL_BUILD_OUT_PREFIX := |
| 174 | ifeq ($(OUT_DIR_PREFIX),out) |
| 175 | KERNEL_BUILD_OUT_PREFIX := $(BUILD_TOP)/ |
| 176 | endif |