CMake fails configuring KF5

[David Gil Oliva]

Hi!

I'm getting this error from CMake while building KF5:

-- Found KF5:
/home/david/devel/kf5-development/share/ECM/find-modules/FindKF5.cmake
(found suitable version "5.0.0", minimum required is "5.0.0") found
components:  CMake Compiler InstallDirs
CMake Error at
/home/david/devel/kf5-development/qt5/qtbase/lib/cmake/Qt5/Qt5Config.cmake:26
(find_package):
  Could not find a package configuration file provided by "Qt5X11Extras"
with
  any of the following names:

    Qt5X11ExtrasConfig.cmake
    qt5x11extras-config.cmake

  Add the installation prefix of "Qt5X11Extras" to CMAKE_PREFIX_PATH or set
  "Qt5X11Extras_DIR" to a directory containing one of the above files.  If
  "Qt5X11Extras" provides a separate development package or SDK, be sure it
  has been installed.
Call Stack (most recent call first):
  tier1/kidletime/CMakeLists.txt:15 (find_package)


-- Configuring incomplete, errors occurred!

Anyone can tell me why could this be happening? Maybe is Qt5 not well built
or is something KF5-only related? :-/

Thanks in advance

David Gil
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