qt proファイルで異なるqtバージョンを区別する

        Qt         ，                   ，   Pro        Qt     

#chec Qt version

QT_VERSION = $$[QT_VERSION]

QT_VERSION = $$split(QT_VERSION, ".")

QT_VER_MAJ = $$member(QT_VERSION, 0) 

QT_VER_MIN = $$member(QT_VERSION, 1)

CONFIG(debug, debug|release) {

    equals(QT_MAJOR_VERSION, 5) {

        LIBS += -L../3Parts/qwt/lib/qt5 -lqwtd

    }

    equals(QT_MAJOR_VERSION, 4) {

        LIBS += -L../3Parts/qwt/lib/qt4 -lqwtd

    }

} else {

    equals(QT_MAJOR_VERSION, 5) {

        LIBS += -L../3Parts/qwt/lib/qt5 -lqwt

    }

    equals(QT_MAJOR_VERSION, 4) {

        LIBS += -L../3Parts/qwt/lib/qt4 -lqwt

    }

}

 
    
    
  
http://www.qtcentre.org/threads/15416-Qt-version-checking-at-the-project-file