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Android.mk
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Android.mk
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# Copyright (C) 2017 MediaTek Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See http://www.gnu.org/licenses/gpl-2.0.html for more details.
LOCAL_PATH := $(call my-dir)
ifeq ($(notdir $(LOCAL_PATH)),$(strip $(LINUX_KERNEL_VERSION)))
ifneq ($(strip $(TARGET_NO_KERNEL)),true)
include $(LOCAL_PATH)/kenv.mk
TZ ?= $(shell cat /etc/timezone)
$(warning TZ for kernel build: $(TZ))
ifeq ($(wildcard $(TARGET_PREBUILT_KERNEL)),)
KERNEL_MAKE_DEPENDENCIES := $(shell find $(KERNEL_DIR) -name .git -prune -o -type f | sort)
KERNEL_MAKE_DEPENDENCIES := $(filter-out %/.git %/.gitignore %/.gitattributes,$(KERNEL_MAKE_DEPENDENCIES))
ifeq ($(FACTORY_BUILD), 1)
KERNEL_CONFIG_OVERRIDE_FACTORY := CONFIG_KERNEL_CUSTOM_FACTORY=y
endif
ifeq ($(ENABLE_MIUI_DEBUGGING), false)
KERNEL_CONFIG_OVERRIDE_DEBUGFS := CONFIG_DEBUG_FS=n
endif
KERNEL_CONFIG_LCT_OVERRIDE := yes
$(TARGET_KERNEL_CONFIG): PRIVATE_DIR := $(KERNEL_DIR)
$(TARGET_KERNEL_CONFIG): $(KERNEL_CONFIG_FILE) $(LOCAL_PATH)/Android.mk
$(TARGET_KERNEL_CONFIG): $(KERNEL_MAKE_DEPENDENCIES)
$(hide) mkdir -p $(dir $@)
$(PREBUILT_MAKE_PREFIX)$(MAKE) -C $(PRIVATE_DIR) $(KERNEL_MAKE_OPTION) $(KERNEL_DEFCONFIG)
$(hide) if [ "$(KERNEL_CONFIG_LCT_OVERRIDE)" == "yes" ]; then \
echo "Overriding kernel config with '$(KERNEL_OUT)/.config'"; \
echo $(KERNEL_CONFIG_OVERRIDE_FACTORY) >> $(KERNEL_OUT)/.config; \
echo $(KERNEL_CONFIG_OVERRIDE_DEBUGFS) >> $(KERNEL_OUT)/.config; \
TZ=$(TZ) $(PREBUILT_MAKE_PREFIX)$(MAKE) -C $(PRIVATE_DIR) $(KERNEL_MAKE_OPTION) oldconfig; \
fi
$(BUILT_DTB_OVERLAY_TARGET): $(KERNEL_ZIMAGE_OUT)
.KATI_RESTAT: $(KERNEL_ZIMAGE_OUT)
$(KERNEL_ZIMAGE_OUT): PRIVATE_DIR := $(KERNEL_DIR)
$(KERNEL_ZIMAGE_OUT): $(TARGET_KERNEL_CONFIG) $(KERNEL_MAKE_DEPENDENCIES)
$(hide) mkdir -p $(dir $@)
TZ=$(TZ) $(PREBUILT_MAKE_PREFIX)$(MAKE) -C $(PRIVATE_DIR) $(KERNEL_MAKE_OPTION)
$(hide) $(call fixup-kernel-cmd-file,$(KERNEL_OUT)/arch/$(KERNEL_TARGET_ARCH)/boot/compressed/.piggy.xzkern.cmd)
# check the kernel image size
python device/mediatek/build/build/tools/check_kernel_size.py $(KERNEL_OUT) $(KERNEL_DIR) $(PROJECT_DTB_NAMES)
ifeq ($(strip $(MTK_HEADER_SUPPORT)), yes)
$(BUILT_KERNEL_TARGET): $(KERNEL_ZIMAGE_OUT) $(TARGET_KERNEL_CONFIG) $(LOCAL_PATH)/Android.mk | $(HOST_OUT_EXECUTABLES)/mkimage$(HOST_EXECUTABLE_SUFFIX)
$(hide) $(HOST_OUT_EXECUTABLES)/mkimage$(HOST_EXECUTABLE_SUFFIX) $< KERNEL 0xffffffff > $@
else
$(BUILT_KERNEL_TARGET): $(KERNEL_ZIMAGE_OUT) $(TARGET_KERNEL_CONFIG) $(LOCAL_PATH)/Android.mk | $(ACP)
$(copy-file-to-target)
endif
$(TARGET_PREBUILT_KERNEL): $(BUILT_KERNEL_TARGET) $(LOCAL_PATH)/Android.mk | $(ACP)
$(copy-file-to-new-target)
endif#TARGET_PREBUILT_KERNEL is empty
$(INSTALLED_KERNEL_TARGET): $(BUILT_KERNEL_TARGET) $(LOCAL_PATH)/Android.mk | $(ACP)
$(copy-file-to-target)
.PHONY: kernel save-kernel kernel-savedefconfig kernel-menuconfig menuconfig-kernel savedefconfig-kernel clean-kernel
kernel: $(INSTALLED_KERNEL_TARGET)
save-kernel: $(TARGET_PREBUILT_KERNEL)
kernel-savedefconfig: $(TARGET_KERNEL_CONFIG)
cp $(TARGET_KERNEL_CONFIG) $(KERNEL_CONFIG_FILE)
kernel-menuconfig:
$(hide) mkdir -p $(KERNEL_OUT)
TZ=$(TZ) $(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION) menuconfig
menuconfig-kernel savedefconfig-kernel:
$(hide) mkdir -p $(KERNEL_OUT)
TZ=$(TZ) $(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION) $(patsubst %config-kernel,%config,$@)
clean-kernel:
$(hide) rm -rf $(KERNEL_OUT) $(KERNEL_MODULES_OUT) $(INSTALLED_KERNEL_TARGET)
$(hide) rm -f $(INSTALLED_DTB_OVERLAY_TARGET)
### DTB build template
MTK_DTBIMAGE_DTS := $(addsuffix .dts,$(addprefix $(KERNEL_DIR)/arch/$(KERNEL_TARGET_ARCH)/boot/dts/,$(PLATFORM_DTB_NAME)))
include device/mediatek/build/core/build_dtbimage.mk
MTK_DTBOIMAGE_DTS := $(addsuffix .dts,$(addprefix $(KERNEL_DIR)/arch/$(KERNEL_TARGET_ARCH)/boot/dts/,$(PROJECT_DTB_NAMES)))
include device/mediatek/build/core/build_dtboimage.mk
endif#TARGET_NO_KERNEL
endif#LINUX_KERNEL_VERSION