编译QGC所需工具

1.QGC：版本5.12.6（必须） http://download.qt.io/official_releases/qt/
2.android SDK:

  https://developer.android.com/studio/index.html下载命令行工具后使用SDKmanager下载sdk

//windows命令是反斜杠
./sdkmanager --update
./sdkmanager --sdk_boot=your_sdk_dir --install "platform-tools" "platforms;android-29" "build-tools;29.0.2" "ndk-bundle"
./sdkmanager --install "emulator" "patcher;v4"

 参考：https://doc.qt.io/qt-5/android-getting-started.html

3.android NDK :https://developer.android.google.cn/ndk/downloads
4.android JDK :https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html
5.apache-ant：http://mirror.bit.edu.cn/apache//ant/binaries/apache-ant-1.9.7-bin.tar.gz（不知道啥用）

下载源码：

git clone https://github.com/mavlink/qgroundcontrol.git --recursive
git submodule update

参考链接：https://blog.youkuaiyun.com/FoxBryant/article/details/51813685