openconnect-gui: needs Qt5, but does not declare dependency on it

[barracuda156]

-- Building openconnect-gui v1.5.3 [cmake]
CMake Error at CMake/Includes/ProjectDependencies.cmake:6 (find_package):
  By not providing "FindQt5.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Qt5", but
  CMake did not find one.

  Could not find a package configuration file provided by "Qt5" (requested
  version 5.10) with any of the following names:

    Qt5Config.cmake
    qt5-config.cmake

  Add the installation prefix of "Qt5" to CMAKE_PREFIX_PATH or set "Qt5_DIR"
  to a directory containing one of the above files.  If "Qt5" provides a
  separate development package or SDK, be sure it has been installed.
Call Stack (most recent call first):
  CMakeLists.txt:31 (include)


-- Configuring incomplete, errors occurred!