MYZR-A40I-EK204 android 编译参考手册
源码包的下载需到我们提供的网盘上来进行下载 。下载到电脑后，需要通过Samba或其他方法将其复制到虚拟机上来。
我们可以创建一个A40I专属的目录来存放相关的源码，编译工具和以后用到的一些东西。如我的目录为：/home/liangyh/my-work/A40I，在此目录下我又创建了4个子目录：
=====> Input:
liangyh@FS12:~/my-work/A40I$ ls
01_image 02_sources 03_toolchain 04_app
01目录可以用来放置我们编译好的镜像（以后用到会说明）
02目录则是用来放置源码
03目录则是放置交叉编译工具配置脚本
04目录我们可以用来放置自己的应用（用户自己分配）
使用Samba或其他方法将源码包复制到虚拟机中的~/my-work/A40I/02_sources目录下后将源码包解压到当前目录下：
=====> Input:
~/my-work/A40I/02_sources$ cat android7.1_v3.tar.bz2* | tar xjv
android 源码编译
源码使用脚本编译，自动配置交叉编译工具，编译源码，最后打包生成板子 img 镜像文件。
编译lichee
=====> Input:
$ cd ~/my-work/A40I/02_sources/android7.1_v3/lichee
$ ./build.sh
=====> Output:
INFO: ----------------------------------------
INFO: build lichee ...
INFO: chip: sun8iw11p1
INFO: platform: androidm
INFO: kernel: linux-3.10
INFO: board: a40-myzr
INFO: output: out/sun8iw11p1/androidm/a40-myzr
INFO: ----------------------------------------
......
#### make completed successfully (23:30 (mm:ss)) ####
编译Android
=====> Input:
$ cd ../android
$ source build/envsetup.sh
=====> Output:
lincluding device/asus/fugu/vendorsetup.sh
including device/generic/mini-emulator-arm64/vendorsetup.sh
including device/generic/mini-emulator-armv7-a-neon/vendorsetup.sh
including device/generic/mini-emulator-mips64/vendorsetup.sh
......
=====> Input:
$ lunch a40_myzr-user
=====> Output:
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=7.1.1
TARGET_PRODUCT=a40_myzr
......
匹配编译好的lichee里的镜像
=====> Input:
$ extract-bsp
=====> Output:
/home/liangyh/my-work/A40I/02_sources/android7.1_v3/android/device/softwinner/a40-myzr/bImage copied!
/home/liangyh/my-work/A40I/02_sources/android7.1_v3/android/device/softwinner/a40-myzr/modules copied!
编译：
=====> Input:
$ make -j16
=====> Output:
......
Creating filesystem with parameters:
Size: 1610612736
Block size: 4096
Blocks per group: 32768
Inodes per group: 8192
Inode size: 256
Journal blocks: 6144
Label: system
Blocks: 393216
Block groups: 12
Reserved block group size: 95
Created filesystem with 2442/98304 inodes and 171693/393216 blocks
[100% 28462/28462] Install system fs image: out/target/product/a40-myzr/system.img
out/target/product/a40-myzr/system.img+out/target/product/a40-myzr/obj/PACKAGING/recovery_patch_intermediates/recovery_from_boot.p maxsize=1644331392 blocksize=4224 total=680351248 reserve=16612992
#### make completed successfully (01:02:01 (hh:mm:ss)) ####
打包固件：
=====> Input:
$ pack
=====> Output:
......
Dragon execute image.cfg SUCCESS !
----------image is at----------
/home/liangyh/my-work/A40I/02_sources/android7.1_v3/lichee/tools/pack/sun8iw11p1_androidm_a40-myzr_uart0.img
pack finish