Qt5WidgetsConfig.cmake references missing libqtaccessiblewidgets.so

[LovesTha]

When building a buildroot target I get the following error while it is attempting to compile cmake for the host system:
loading initial cache file /data/Build/buildroot/output/build/host-cmake-3.3.2/Bootstrap.cmk/InitialCacheFlags.cmake
CMake Error at /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5WidgetsConfig.cmake:27 (message):
  The imported target "Qt5::Widgets" references the file

     "/usr/lib/x86_64-linux-gnu/qt5/plugins/accessible/libqtaccessiblewidgets.so"

  but this file does not exist. Possible reasons include:

  * The file was deleted, renamed, or moved to another location.

  * An install or uninstall procedure did not complete successfully.

  * The installation package was faulty and contained

     "/usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5Widgets_AccessibleFactory.cmake"

  but not all the files it references.

Call Stack (most recent call first):
  /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5WidgetsConfig.cmake:145 (_qt5_Widgets_check_file_exists)
  /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5Widgets_AccessibleFactory.cmake:4 (_populate_Widgets_plugin_properties)
  /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5WidgetsConfigExtras.cmake:13 (include)
  /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5WidgetsConfig.cmake:158 (include)
  Tests/CMakeLists.txt:1222 (find_package)

-- Configuring incomplete, errors occurred!
See also "/data/Build/buildroot/output/build/host-cmake-3.3.2/CMakeFiles/CMakeOutput.log".
See also "/data/Build/buildroot/output/build/host-cmake-3.3.2/CMakeFiles/CMakeError.log".

System details:
> lsb_release -rd
Description: Ubuntu 15.10
Release: 15.10
> apt-cache policy libqt5widgets5
libqt5widgets5:
  Installed: 5.4.2+dfsg-2ubuntu9
  Candidate: 5.4.2+dfsg-2ubuntu9
  Version table:
 *** 5.4.2+dfsg-2ubuntu9 0
        500 http://ftp.iinet.net.au/pub/ubuntu/ wily/main amd64 Packages
        100 /var/lib/dpkg/status
>

[LovesTha (lovestha)]

I'm guessing this is because /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5Widgets_AccessibleFactory.cmake has never been removed as this box has been slowly upgraded over the years.