一、如何编译出vendor.img
1. 首先找到产品对应BoardConfig.mk
路径：LINUX/android/
device/项目/产品/BoardConfig.mk
2. 修改BoardConfig.mk
设置下面代码中的ENABLE_VENDOR_IMAGE为true。
#Enable split vendor image
ENABLE_VENDOR_IMAGE := true
#ENABLE_VENDOR_IMAGE := false
ifeq ($(ENABLE_VENDOR_IMAGE), true)
BOARD_VENDORIMAGE_PARTITION_SIZE := 838860800
BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE := ext4
TARGET_COPY_OUT_VENDOR := vendor
BOARD_PROPERTY_OVERRIDES_SPLIT_ENABLED := true
endif
3. 编译
make vendorimage -j4
二、如何编译packages/apps/Settings并进行push
1)进入packages/apps/Settings 执行mm；
2)执行
adb root;
adb disable-verity;
adb remount;
adb push out/target/product/***/system/priv-app/Settings/Settings.apk system/priv-app/Settings/
三、如何编译frameworks/base/packages/SettingsLib
1. 修改frameworks/base/packages/SettingsLib/Android.mk
屏蔽Android.mk里面的最后一行，如下
# For the test package.
#include $(call all-makefiles-under, $(LOCAL_PATH))
2. 编译
source ./build/envsetup.sh
lunch ***
进入frameworks/base/packages/SettingsLib目录下
执行mm
3. 【注意】
frameworks/base/packages/SettingsLib下的修改如何编译后进行push到手机？
解决方案：
1)进入packages/apps/Settings 执行mm；
2)执行
adb root;
adb disable-verity;
adb remount;
adb push out/target/product/***/system/priv-app/Settings/Settings.apk system/priv-app/Settings/
3)如果
有lib文件生成，则也要进行adb push操作。
四、编译boot.img
make bootimage
五、编译package/app/Nfc
make NfcNci
