HEADERS += $$PWD/qextserialport.h HEADERS += $$PWD/qextserialport_global.h HEADERS += $$PWD/qextserialport_p.h SOURCES += $$PWD/qextserialport.cpp win32 { SOURCES += $$PWD/qextserialport_win.cpp } unix { SOURCES += $$PWD/qextserialport_unix.cpp }