mac os x装有QT5,和xCode,但是昨天手贱,将xCode删除,今天重新安装xCode,执行之前的QT项目,发现如下问题,附上图: error: 'TargetConditionals.h' file not found # include <TargetConditionals.h> /Users/leo/Qt5.7.0/5.7/clang_64/lib/QtCore.framework/Headers/qsystemdetection.h:95: 解决方法: 将之前项目的D […]