编译某个项目时报错提示fatal error: QSignalTransition: No such file or directory，是因为qtbase中没有包含StateMachine模块，需要qt/qtscxml.git - SCXML (state machine notation) compiler and related tools
编译安装qtscxml
执行如下步骤：
git clone https://code.qt.io/qt/qtscxml.git
cd qtscxml
mkdir build
cd build
qt-config-module ..
cmake --build . --parallel 16
cmake --install .