greaterThan(QT_MAJOR_VERSION, 4) { QT += widgets printsupport greaterThan(QT_MINOR_VERSION, 1) { macx:QT += macextras } } INCLUDEPATH += $$[QT_INSTALL_HEADERS] LIBS += -L$$[QT_INSTALL_LIBS] greaterThan(QT_MAJOR_VERSION, 4) { win32|macx:LIBS += -lqscintilla2 else:LIBS += -lqt5scintilla2 } else { LIBS += -lqscintilla2 }