stumble

pi@raspberrypi /usr/src/obs-studio/build $ sudo cmake -DUNIX_STRUCTURE=1 -DCMAKE_INSTALL_PREFIX=/usr ..
-- OBS_VERSION: 0.8.2-16-gee4f844
-- Jansson >=2.5 not found, building bundled version
-- XCB[XCB]: Found component XCB
-- Using libavcodec for image loading in libobs
CMake Error at obs/CMakeLists.txt:68 (find_package):
  By not providing "FindQt5X11Extras.cmake" in CMAKE_MODULE_PATH this project
  has asked CMake to find a package configuration file provided by
  "Qt5X11Extras", but CMake did not find one.

  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.


-- Configuring incomplete, errors occurred!