After upgrading to Qt5.4 and the included Qt Creator3.3, I found that after modifying .pro file, rebuilding won't apply the changes unless I manually run qmake in the build menu. I didn't notice this before so I didn't even sense that qmake should be run before the project is changed. So in the past it must have been run automatically.

The problem is, I have to run qmake manually every time I change the .pro file. Is there any way I can make it automatic, just as it did before?
Thanks.