qmake can't find wayland-egl( building QtWayland )

when I run qmake, I get next log: >> /home/user/Qt5.1.0/5.1.0/gcc/bin/qmake Info: creating cache file /home/user/qtwayland/.qmake.cache Checking for wayland… yes Checking for xkbcommon… yes Checking for wayland_scanner… yes Checking for wayland_egl… no Checking for egl… no Checking for brcm_egl… no Checking for glx… yes Checking for xcomposite… yes Project MESSAGE: no wayland-egl support detected, cross-toolkit compatibility disabled I build QtWayland by http://qt-project.org/wiki/QtWayland So, why qmake can’t find wayland-egl and egl?