Qt4移植到Qt5出现以下错误，求帮忙，谢谢！

C:\Users\Flying_Spider\Desktop\paper modify\RealTimeCTSegmentation-master\mainwindow.cpp:152: error: 'CLOCKS_PER_SEC' was not declared in this scope
while (frameTime[currentFrame] - frameTime[(currentFrame - fps) % totalFrames] > CLOCKS_PER_SEC)
C:\Users\Flying_Spider\Desktop\paper modify\RealTimeCTSegmentation-master\mainwindow.cpp:279: error: 'clock' was not declared in this scope
time1 -= clock ();

总之提示很多有关clock的错误。

https://blog.csdn.net/u010825025/article/details/77559497?locationNum=9&fps=1