android_kernel_oneplus_msm8998/AndroidKernel.mk at 7515bfb3f1517b27c0119ccc8376ee89ea90df11 - evie/android_kernel_oneplus_msm8998 - Gay Catgirls Forgejo: gay catgirls having sex

evie/android_kernel_oneplus_msm8998

Shashank Mittal 7515bfb3f1 AndroidKernel: add support to pass build flags

Add support to pass build flags while compiling Linux kernel.

This change is required to add support in Linux kernel to use external
host executable. (example: dtc)

Usage example:
TARGET_KERNEL_MAKE_ENV := DTC_EXT=dtc$(HOST_EXECUTABLE_SUFFIX)

Change-Id: I008ca00cf9695133ff167ffdee8d8dfb89beb598
Signed-off-by: Shashank Mittal <mittals@codeaurora.org>

2017-04-06 11:22:03 -07:00

174 lines

7.1 KiB

Makefile

Raw Blame History

 #Android makefile to build kernel as a part of Android Build
 PERL		= perl
 KERNEL_TARGET := $(strip $(INSTALLED_KERNEL_TARGET))
 ifeq ($(KERNEL_TARGET),)
 INSTALLED_KERNEL_TARGET := $(PRODUCT_OUT)/kernel
 endif
 TARGET_KERNEL_MAKE_ENV := $(strip $(TARGET_KERNEL_MAKE_ENV))
 ifeq ($(TARGET_KERNEL_MAKE_ENV),)
 KERNEL_MAKE_ENV :=
 else
 KERNEL_MAKE_ENV := $(TARGET_KERNEL_MAKE_ENV)
 endif
 TARGET_KERNEL_ARCH := $(strip $(TARGET_KERNEL_ARCH))
 ifeq ($(TARGET_KERNEL_ARCH),)
 KERNEL_ARCH := arm
 else
 KERNEL_ARCH := $(TARGET_KERNEL_ARCH)
 endif
 TARGET_KERNEL_HEADER_ARCH := $(strip $(TARGET_KERNEL_HEADER_ARCH))
 ifeq ($(TARGET_KERNEL_HEADER_ARCH),)
 KERNEL_HEADER_ARCH := $(KERNEL_ARCH)
 else
 $(warning Forcing kernel header generation only for '$(TARGET_KERNEL_HEADER_ARCH)')
 KERNEL_HEADER_ARCH := $(TARGET_KERNEL_HEADER_ARCH)
 endif
 KERNEL_HEADER_DEFCONFIG := $(strip $(KERNEL_HEADER_DEFCONFIG))
 ifeq ($(KERNEL_HEADER_DEFCONFIG),)
 KERNEL_HEADER_DEFCONFIG := $(KERNEL_DEFCONFIG)
 endif
 # Force 32-bit binder IPC for 64bit kernel with 32bit userspace
 ifeq ($(KERNEL_ARCH),arm64)
 ifeq ($(TARGET_ARCH),arm)
 KERNEL_CONFIG_OVERRIDE := CONFIG_ANDROID_BINDER_IPC_32BIT=y
 endif
 endif
 TARGET_KERNEL_CROSS_COMPILE_PREFIX := $(strip $(TARGET_KERNEL_CROSS_COMPILE_PREFIX))
 ifeq ($(TARGET_KERNEL_CROSS_COMPILE_PREFIX),)
 KERNEL_CROSS_COMPILE := arm-eabi-
 else
 KERNEL_CROSS_COMPILE := $(TARGET_KERNEL_CROSS_COMPILE_PREFIX)
 endif
 ifeq ($(TARGET_PREBUILT_KERNEL),)
 KERNEL_GCC_NOANDROID_CHK := $(shell (echo "int main() {return 0;}" | $(KERNEL_CROSS_COMPILE)gcc -E -mno-android - > /dev/null 2>&1 ; echo $$?))
 ifeq ($(strip $(KERNEL_GCC_NOANDROID_CHK)),0)
 KERNEL_CFLAGS := KCFLAGS=-mno-android
 endif
 mkfile_path := $(abspath $(lastword $(MAKEFILE_LIST)))
 current_dir := $(notdir $(patsubst %/,%,$(dir $(mkfile_path))))
 ifeq ($(TARGET_KERNEL_VERSION),)
     TARGET_KERNEL_VERSION := 3.18
 endif
 TARGET_KERNEL := msm-$(TARGET_KERNEL_VERSION)
 ifeq ($(TARGET_KERNEL),$(current_dir))
     # New style, kernel/msm-version
     BUILD_ROOT_LOC := ../../
     TARGET_KERNEL_SOURCE := kernel/$(TARGET_KERNEL)
     KERNEL_OUT := $(TARGET_OUT_INTERMEDIATES)/kernel/$(TARGET_KERNEL)
     KERNEL_SYMLINK := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ
     KERNEL_USR := $(KERNEL_SYMLINK)/usr
 else
     # Legacy style, kernel source directly under kernel
     KERNEL_LEGACY_DIR := true
     BUILD_ROOT_LOC := ../
     TARGET_KERNEL_SOURCE := kernel
     KERNEL_OUT := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ
 endif
 KERNEL_CONFIG := $(KERNEL_OUT)/.config
 ifeq ($(KERNEL_DEFCONFIG)$(wildcard $(KERNEL_CONFIG)),)
 $(error Kernel configuration not defined, cannot build kernel)
 else
 ifeq ($(TARGET_USES_UNCOMPRESSED_KERNEL),true)
 $(info Using uncompressed kernel)
 TARGET_PREBUILT_INT_KERNEL := $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/Image
 else
 ifeq ($(KERNEL_ARCH),arm64)
 TARGET_PREBUILT_INT_KERNEL := $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/Image.gz
 else
 TARGET_PREBUILT_INT_KERNEL := $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/zImage
 endif
 endif
 ifeq ($(TARGET_KERNEL_APPEND_DTB), true)
 $(info Using appended DTB)
 TARGET_PREBUILT_INT_KERNEL := $(TARGET_PREBUILT_INT_KERNEL)-dtb
 endif
 KERNEL_HEADERS_INSTALL := $(KERNEL_OUT)/usr
 KERNEL_MODULES_INSTALL := system
 KERNEL_MODULES_OUT := $(TARGET_OUT)/lib/modules
 TARGET_PREBUILT_KERNEL := $(TARGET_PREBUILT_INT_KERNEL)
 define mv-modules
 mdpath=`find $(KERNEL_MODULES_OUT) -type f -name modules.dep`;\
 if [ "$$mdpath" != "" ];then\
 mpath=`dirname $$mdpath`;\
 ko=`find $$mpath/kernel -type f -name *.ko`;\
 for i in $$ko; do mv $$i $(KERNEL_MODULES_OUT)/; done;\
 fi
 endef
 define clean-module-folder
 mdpath=`find $(KERNEL_MODULES_OUT) -type f -name modules.dep`;\
 if [ "$$mdpath" != "" ];then\
 mpath=`dirname $$mdpath`; rm -rf $$mpath;\
 fi
 endef
 ifneq ($(KERNEL_LEGACY_DIR),true)
 $(KERNEL_USR): $(KERNEL_HEADERS_INSTALL)
 	rm -rf $(KERNEL_SYMLINK)
 	ln -s kernel/$(TARGET_KERNEL) $(KERNEL_SYMLINK)
 $(TARGET_PREBUILT_INT_KERNEL): $(KERNEL_USR)
 endif
 $(KERNEL_OUT):
 	mkdir -p $(KERNEL_OUT)
 $(KERNEL_CONFIG): $(KERNEL_OUT)
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(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 $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) oldconfig; fi
 $(TARGET_PREBUILT_INT_KERNEL): $(KERNEL_OUT) $(KERNEL_HEADERS_INSTALL)
 	$(hide) echo "Building kernel..."
 	$(hide) rm -rf $(KERNEL_OUT)/arch/$(KERNEL_ARCH)/boot/dts
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_CFLAGS)
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_CFLAGS) modules
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) INSTALL_MOD_PATH=$(BUILD_ROOT_LOC)../$(KERNEL_MODULES_INSTALL) INSTALL_MOD_STRIP=1 $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) modules_install
 	$(mv-modules)
 	$(clean-module-folder)
 $(KERNEL_HEADERS_INSTALL): $(KERNEL_OUT)
 	$(hide) if [ ! -z "$(KERNEL_HEADER_DEFCONFIG)" ]; then \
 			rm -f $(BUILD_ROOT_LOC)$(KERNEL_CONFIG); \
 			$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_HEADER_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_HEADER_DEFCONFIG); \
 			$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_HEADER_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) headers_install; fi
 	$(hide) if [ "$(KERNEL_HEADER_DEFCONFIG)" != "$(KERNEL_DEFCONFIG)" ]; then \
 			echo "Used a different defconfig for header generation"; \
 			rm -f $(BUILD_ROOT_LOC)$(KERNEL_CONFIG); \
 			$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(KERNEL_DEFCONFIG); fi
 	$(hide) if [ ! -z "$(KERNEL_CONFIG_OVERRIDE)" ]; then \
 			echo "Overriding kernel config with '$(KERNEL_CONFIG_OVERRIDE)'"; \
 			echo $(KERNEL_CONFIG_OVERRIDE) >> $(KERNEL_OUT)/.config; \
 			$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) oldconfig; fi
 kerneltags: $(KERNEL_OUT) $(KERNEL_CONFIG)
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) tags
 kernelconfig: $(KERNEL_OUT) $(KERNEL_CONFIG)
 	env KCONFIG_NOTIMESTAMP=true \
 	     $(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) menuconfig
 	env KCONFIG_NOTIMESTAMP=true \
 	     $(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) savedefconfig
 	cp $(KERNEL_OUT)/defconfig $(TARGET_KERNEL_SOURCE)/arch/$(KERNEL_ARCH)/configs/$(KERNEL_DEFCONFIG)
 endif
 endif