#! [0]

EXTRAS = handlers tests docs

for(dir, EXTRAS) {

    exists($$dir) {

        SUBDIRS += $$dir

    }

}

#! [0]

SOURCES = paintwidget_mac.cpp paintwidget_unix.cpp paintwidget_win.cpp

macx {

    SOURCES = $$find(SOURCES, "_mac")

}

#! [1]

HEADERS = model.h

HEADERS += $$OTHER_HEADERS

HEADERS = $$unique(HEADERS)

#! [1]

CONFIG += debug

#! [2]

options = $$find(CONFIG, "debug") $$find(CONFIG, "release")

#! [3]

count(options, 2) {

    message(Both release and debug specified.)

}

#! [2] #! [3]

#! [4]

eval(TARGET = myapp) {

    message($$TARGET)

}

#! [4]