Commit a3874b6b authored by mohancm100's avatar mohancm100
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Android.mk

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# Copyright (c) 2015 MediaTek Inc.

#

# 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.



LOCAL_PATH := $(call my-dir)

KERNEL_ROOT_DIR := $(PWD)



define touch-kernel-image-timestamp

if [ -e $(1) ] && [ -e $(2) ] && cmp -s $(1) $(2); then \

 echo $(2) has no change;\

 mv -f $(1) $(2);\

else \

 rm -f $(1);\

fi

endef



define move-kernel-module-files

v=`cat $(2)/include/config/kernel.release`;\

for i in `grep -h '\.ko' /dev/null $(2)/.tmp_versions/*.mod`; do \

 o=`basename $$i`;\

 if [ -e $(1)/lib/modules/$$o ] && cmp -s $(1)/lib/modules/$$v/kernel/$$i $(1)/lib/modules/$$o; then \

  echo $(1)/lib/modules/$$o has no change;\

 else \

  echo Update $(1)/lib/modules/$$o;\

  mv -f $(1)/lib/modules/$$v/kernel/$$i $(1)/lib/modules/$$o;\

 fi;\

done

endef



define clean-kernel-module-dirs

rm -rf $(1)/lib/modules/$(if $(2),`cat $(2)/include/config/kernel.release`,*/)

endef



# '\\' in command is wrongly replaced to '\\\\' in kernel/out/arch/arm/boot/compressed/.piggy.xzkern.cmd

define fixup-kernel-cmd-file

if [ -e $(1) ]; then cp $(1) $(1).bak; sed -e 's/\\\\\\\\/\\\\/g' < $(1).bak > $(1); rm -f $(1).bak; fi

endef



ifeq ($(notdir $(LOCAL_PATH)),$(strip $(LINUX_KERNEL_VERSION)))

ifneq ($(strip $(TARGET_NO_KERNEL)),true)

    KERNEL_DIR := $(LOCAL_PATH)

    BUILT_SYSTEMIMAGE := $(call intermediates-dir-for,PACKAGING,systemimage)/system.img



  ifeq ($(KERNEL_CROSS_COMPILE),)

  ifeq ($(TARGET_ARCH), arm64)

    KERNEL_CROSS_COMPILE := $(KERNEL_ROOT_DIR)/$(TARGET_TOOLS_PREFIX)

  else

    KERNEL_CROSS_COMPILE := $(KERNEL_ROOT_DIR)/prebuilts/gcc/$(HOST_PREBUILT_TAG)/arm/arm-eabi-$(TARGET_GCC_VERSION)/bin/arm-eabi-

  endif

  endif

  ifeq ($(wildcard $(TARGET_PREBUILT_KERNEL)),)

    KERNEL_OUT ?= $(if $(filter /% ~%,$(TARGET_OUT_INTERMEDIATES)),,$(KERNEL_ROOT_DIR)/)$(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ

    ifeq ($(TARGET_ARCH), arm64)

      ifeq ($(MTK_APPENDED_DTB_SUPPORT), yes)

        KERNEL_ZIMAGE_OUT := $(KERNEL_OUT)/arch/$(TARGET_ARCH)/boot/Image.gz-dtb

      else

        KERNEL_ZIMAGE_OUT := $(KERNEL_OUT)/arch/$(TARGET_ARCH)/boot/Image.gz

      endif

    else

      ifeq ($(MTK_APPENDED_DTB_SUPPORT), yes)

        KERNEL_ZIMAGE_OUT := $(KERNEL_OUT)/arch/$(TARGET_ARCH)/boot/zImage-dtb

      else

        KERNEL_ZIMAGE_OUT := $(KERNEL_OUT)/arch/$(TARGET_ARCH)/boot/zImage

      endif

    endif

    ifeq ($(strip $(MTK_INTERNAL)),yes)

      KBUILD_BUILD_USER ?= mediatek

      KBUILD_BUILD_HOST ?= mediatek

    endif

    export KBUILD_BUILD_USER

    export KBUILD_BUILD_HOST

    BUILT_KERNEL_TARGET := $(KERNEL_ZIMAGE_OUT).bin

    INSTALLED_KERNEL_TARGET := $(PRODUCT_OUT)/kernel

    TARGET_KERNEL_CONFIG := $(KERNEL_OUT)/.config

    KERNEL_HEADERS_INSTALL := $(KERNEL_OUT)/usr

    KERNEL_CONFIG_FILE := $(KERNEL_DIR)/arch/$(TARGET_ARCH)/configs/$(KERNEL_DEFCONFIG)

    KERNEL_CONFIG_MODULES := $(shell grep ^CONFIG_MODULES=y $(KERNEL_CONFIG_FILE))

    KERNEL_MODULES_OUT := $(if $(filter /% ~%,$(TARGET_OUT)),,$(KERNEL_ROOT_DIR)/)$(TARGET_OUT)

    KERNEL_MODULES_DEPS := $(if $(wildcard $(KERNEL_MODULES_OUT)/lib/modules/*.ko),$(wildcard $(KERNEL_MODULES_OUT)/lib/modules/*.ko),$(KERNEL_MODULES_OUT)/lib/modules)

    KERNEL_MODULES_SYMBOLS_OUT := $(if $(filter /% ~%,$(TARGET_OUT_UNSTRIPPED)),,$(KERNEL_ROOT_DIR)/)$(TARGET_OUT_UNSTRIPPED)/system

    KERNEL_MAKE_OPTION := O=$(KERNEL_OUT) ARCH=$(TARGET_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) ROOTDIR=$(KERNEL_ROOT_DIR) $(if $(strip $(SHOW_COMMANDS)),V=1)



# .config cannot be PHONY due to config_data.gz

$(TARGET_KERNEL_CONFIG): $(KERNEL_CONFIG_FILE) $(LOCAL_PATH)/Android.mk

ifneq ($(wildcard $(TARGET_KERNEL_CONFIG)),)

$(TARGET_KERNEL_CONFIG): $(shell find $(KERNEL_DIR) -name "Kconfig*")

endif

	$(hide) mkdir -p $(KERNEL_OUT)

	$(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION) $(KERNEL_DEFCONFIG)



$(KERNEL_MODULES_DEPS): $(KERNEL_ZIMAGE_OUT) ;



$(KERNEL_ZIMAGE_OUT): $(TARGET_KERNEL_CONFIG) FORCE

	$(hide) mkdir -p $(KERNEL_OUT)

	$(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION)

	$(hide) $(call fixup-kernel-cmd-file,$(KERNEL_OUT)/arch/$(TARGET_ARCH)/boot/compressed/.piggy.xzkern.cmd)

ifneq ($(KERNEL_CONFIG_MODULES),)

	$(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION) modules

	$(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION) INSTALL_MOD_PATH=$(KERNEL_MODULES_SYMBOLS_OUT) modules_install

	$(hide) $(call move-kernel-module-files,$(KERNEL_MODULES_SYMBOLS_OUT),$(KERNEL_OUT))

	$(hide) $(call clean-kernel-module-dirs,$(KERNEL_MODULES_SYMBOLS_OUT),$(KERNEL_OUT))

	$(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION) INSTALL_MOD_PATH=$(KERNEL_MODULES_OUT) modules_install

	$(hide) $(call move-kernel-module-files,$(KERNEL_MODULES_OUT),$(KERNEL_OUT))

	$(hide) $(call clean-kernel-module-dirs,$(KERNEL_MODULES_OUT),$(KERNEL_OUT))

endif



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)



  else

    BUILT_KERNEL_TARGET := $(TARGET_PREBUILT_KERNEL)

  endif#TARGET_PREBUILT_KERNEL



$(INSTALLED_KERNEL_TARGET): $(BUILT_KERNEL_TARGET) $(LOCAL_PATH)/Android.mk | $(ACP)

	$(copy-file-to-target)



ifneq ($(KERNEL_CONFIG_MODULES),)

$(BUILT_SYSTEMIMAGE): $(KERNEL_MODULES_DEPS)

endif



.PHONY: kernel save-kernel kernel-savedefconfig %config-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)

	$(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION) menuconfig



%config-kernel:

	$(hide) mkdir -p $(KERNEL_OUT)

	$(MAKE) -C $(KERNEL_DIR) $(KERNEL_MAKE_OPTION) $(patsubst %config-kernel,%config,$@)



clean-kernel:

	$(hide) rm -rf $(KERNEL_OUT) $(KERNEL_MODULES_OUT) $(INSTALLED_KERNEL_TARGET)



.PHONY: check-kernel-config check-kernel-dotconfig

droid: check-kernel-config check-kernel-dotconfig

check-mtk-config: check-kernel-config check-kernel-dotconfig

check-kernel-config:

	python device/mediatek/build/build/tools/check_kernel_config.py -c $(MTK_TARGET_PROJECT_FOLDER)/ProjectConfig.mk -k $(KERNEL_CONFIG_FILE) -p $(MTK_PROJECT_NAME)





ifneq ($(filter check-mtk-config check-kernel-dotconfig,$(MAKECMDGOALS)),)

.PHONY: $(TARGET_KERNEL_CONFIG)

endif

check-kernel-dotconfig: $(TARGET_KERNEL_CONFIG)

	python device/mediatek/build/build/tools/check_kernel_config.py -c $(MTK_TARGET_PROJECT_FOLDER)/ProjectConfig.mk -k $(TARGET_KERNEL_CONFIG) -p $(MTK_PROJECT_NAME)





endif#TARGET_NO_KERNEL

endif#LINUX_KERNEL_VERSION

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CREDITS

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CleanSpec.mk

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# Copyright (c) 2015 MediaTek Inc.

#

# 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.



# dummy file

# To avoid scanning kernel when using findleaves.py to search CleanSpec.mk

Documentation/00-INDEX

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