I would like to compile and then install Hawaii from source code, but I am stuck at the compiling GreenIsland (a dependency of Hawaii) from source code stage. I created a build subdirectory of the source code directory with mkdir build and ran:cmake .. -DCMAKE_INSTALL_PREFIX=/usrbut this gave the error:CMake Error at /usr/lib64/cmake/Qt5/Qt5Config.cmake:26 (find_package):  Could not find a package configuration file provided by Qt5Compositor  with any of the following names:    Qt5CompositorConfig.cmake    qt5compositor-config.cmake  Add the installation prefix of Qt5Compositor to CMAKE_PREFIX_PATH or set  Qt5Compositor_DIR to a directory containing one of the above files.  If  Qt5Compositor provides a separate development package or SDK, be sure it  has been installed.Call Stack (most recent call first):  CMakeLists.txt:60 (find_package)-- Configuring incomplete, errors occurred!See also /home/fusion809/Programs/Hawaii/greenisland-0.6.0/build/CMakeFiles/CMakeOutput.log.here is my log file (/home/fusion809/Programs/Hawaii/greenisland-0.6.0/build/CMakeFiles/CMakeOutput.log). I interpret this error to mean I am missing Qt5CompositorConfig.cmake from my system. What Portage ebuild do I need to merge to get this library? If relevant I am working on Sabayon Linux. 
Which Gentoo Package provides Qt5CompositorConfig.cmake?
compiling;dependencies;qt;sabayon