首先要下載相關的工具鏈

In addition to the packages requested on the Android website, the following packages are also needed: $ sudo apt-get install uuid uuid-dev $ sudo apt-get install zlib1g-dev liblz-dev $ sudo apt-get install liblzo2-2 liblzo2-dev $ sudo apt-get install lzop $ sudo apt-get install git-core curl $ sudo apt-get install u-boot-tools $ sudo apt-get install mtd-utils $ sudo apt-get install android-tools-fsutils $ sudo apt-get install openjdk-8-jdk $ sudo apt-get install device-tree-compiler $ sudo apt-get install gdisk

注意的是如果Ubuntu 系統中已經安裝了java7 ，現在編譯imx8 需要java8.記得java要切換到java 8.
編譯Android system

$ source build/envsetup.sh$ lunch mek_8q-userdebug$ make 2>&1 | tee build-log.txt

如果電腦配置不好，編譯時間比較漫長 ，大概5小時。如果又任何錯誤 可以查看 build-log.txt 獲得詳細信息
編譯完成后 生成img 文件如下：

編譯 ota 升級版命令 ，生成升級包就是上圖的標紅的文件

make otapackage

編譯uboot

You can use this command to generate u-boot.imx under the Android environment: # U-Boot image for i.MX 8QuadMax/8QuadXPlus MEK board: $ cd ${MY_ANDROID} $ source build/envsetup.sh $ lunch mek_8q-userdebug $ make bootloader -j4

生成kernelimg

Kernel image is automatically built when building the Android root file system. The following are the default Android build commands to build the kernel image: $ cd ${MY_ANDROID}/vendor/nxp-opensource/kernel_imx $ echo $ARCH && echo $CROSS_COMPILE Make sure that you have those two environment variables set. If the two variables are not set, set them as follows: $ export ARCH=arm64 $ export CROSS_COMPILE=${MY_ANDROID}/prebuilts/gcc/linux-x86/aarch64/aarch64-linuxandroid- 4.9/bin/aarch64-linux-android- android_defconfig. # to build the kernel zImage for i.MX 8QuadMax/8QuadXPlus $ make android_defconfig $ make KCFLAGS=-mno-android # to build the zImage which is used in MfgTOOL # zImage is under mfgtools\Profiles\Linux\OS Firmware\firmware\ $ make defconfig $ make KCFLAGS=-mno-android -j4 The kernel images are found in ${MY_ANDROID}/out/target/product/mek_8q/obj/KERNEL_OBJ/arch/arm64/boot/Image.

最后生成bootimage

# Boot image for i.MX 8MQuad EVK board $ source build/envsetup.sh $ lunch mek_8q-userdebug $ make bootimage

Building dtbo.img

Dtbo image holds the board's device tree binary. Use the following commands to generate dtbo.img under the Android environment: # dtbo image for the i.MX 8QuadMax/8QuadXPlus MEK board $ cd ${MY_ANDROID} $ source build/envsetup.sh $ lunch mek_8q-userdebug $ make dtboimage -j4

總結

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