In Qt Creator, examples are missed

[nixmd]

Installed Qt Creator 2.8 in ArchLinux
Installed qt5-* (* as every related package) using pacman

examples were not available in the repositories so I used the one in the AUR, qt5-examples

examples are installed under /usr/share/doc/qt/examples

qmake-qt5 -query says:

@ QT_SYSROOT:
QT_INSTALL_PREFIX:/usr
QT_INSTALL_ARCHDATA:/usr/lib/qt
QT_INSTALL_DATA:/usr/share/qt
QT_INSTALL_DOCS:/usr/share/doc/qt
QT_INSTALL_HEADERS:/usr/include/qt
QT_INSTALL_LIBS:/usr/lib
QT_INSTALL_LIBEXECS:/usr/lib/qt/libexec
QT_INSTALL_BINS:/usr/lib/qt/bin
QT_INSTALL_TESTS:/usr/tests
QT_INSTALL_PLUGINS:/usr/lib/qt/plugins
QT_INSTALL_IMPORTS:/usr/lib/qt/imports
QT_INSTALL_QML:/usr/lib/qt/qml
QT_INSTALL_TRANSLATIONS:/usr/share/qt/translations
QT_INSTALL_CONFIGURATION:/etc/xdg
QT_INSTALL_EXAMPLES:/usr/share/doc/qt/examples
QT_INSTALL_DEMOS:/usr/share/doc/qt/examples
QT_HOST_PREFIX:/usr
QT_HOST_DATA:/usr/lib/qt
QT_HOST_BINS:/usr/lib/qt/bin
QT_HOST_LIBS:/usr/lib
QMAKE_SPEC:linux-g++
QMAKE_XSPEC:linux-g++
QMAKE_VERSION:3.0
QT_VERSION:5.1.0@

which means examples are in the right place

But they are not shown in Qt Creator!

How can I bring them in qtcreator?

PS: I really can't install the SDK,