On my CentOS 7 installation the packages xcb-util-wm xcb-util-renderutil were missing.
To diagnose such Problems in general set
export QT_DEBUG_PLUGINS=1
before starting the INSTALL script.
In my case i got
Cannot load library /tmp/ans_install_tmp20326/platforms/libqxcb.so: (libxcb-icccm.so.4: cannot open shared object file: No such file or directory)
QLibraryPrivate::loadPlugin failed on "/tmp/ans_install_tmp20326/platforms/libqxcb.so" : "Cannot load library /tmp/ans_install_tmp20326/platforms/libqxcb.so: (libxcb-icccm.so.4: cannot open shared object file: No such file or directory)"
The missing libxcb-icccm.so.4 is part of the xcb-util-wm Package.
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