Example framebufferobject2.pro can not be parsed

[rosone]

HEADERS += glwidget.h
SOURCES += glwidget.cpp main.cpp
RESOURCES += framebufferobject2.qrc

QT += opengl widgets

install

target.path = $$[QT_INSTALL_EXAMPLES]/opengl/framebufferobject2
INSTALLS += target

contains(QT_CONFIG, opengles.) {
contains(QT_CONFIG, angle):
warning("Qt was built with ANGLE, which provides only OpenGL ES 2.0 on top of DirectX 9.0c")
error("This example requires Qt to be configured with -opengl desktop")
}