Build a cross-compilation environment (install Android SDK: Unzip android-sdk_m5-rc14_linux-x86.zip to the appropriate path and use it. This article releases it to the /usr/local/android_sdk_linux path, and tools path is added to PATH), obtain the kernel compilation configuration file (obtained from the emulator in the android sdk. Start the android emulator, and then obtain the kernel configuration file provided in the emulator through adb), and run it under the emulator Mirroring, some possible errors (mainly problems caused by version mismatch).