OTHER_FILES += $$PWD/qextserialport.qdocconf #name of qdoc3 has been changed to qdoc under Qt5 QESP_QDOC = qdoc lessThan(QT_MAJOR_VERSION, 5):QESP_QDOC = qdoc3 docs_target.target = docs docs_target.commands = $$QESP_QDOC $$PWD/qextserialport.qdocconf QMAKE_EXTRA_TARGETS = docs_target QMAKE_CLEAN += "-r $$PWD/html"