How to compile and run a hello world JUCE program?

I cloned https://github.com/juce-framework/JUCE

I first uncommented find_package(JUCE) in /GuiApp' CMakeList.txt. Then I ran cmake .. . -B cmake-build-dir -D JUCE_BUILD_EXAMPLES=ON on the top level directory.

It says:

-- Checking for modules 'webkit2gtk-4.0;gtk+-x11-3.0'
--   No package 'webkit2gtk-4.0' found
--   No package 'gtk+-x11-3.0' found
-- Checking for module 'alsa'
--   No package 'alsa' found
-- Configuring juceaide
-- Building juceaide
-- Exporting juceaide
CMake Error at examples/CMake/GuiApp/CMakeLists.txt:27 (find_package):
  Could not find a package configuration file provided by "JUCE" with any of
  the following names:

    JUCEConfig.cmake
    juce-config.cmake

  Add the installation prefix of "JUCE" to CMAKE_PREFIX_PATH or set
  "JUCE_DIR" to a directory containing one of the above files.  If "JUCE"
  provides a separate development package or SDK, be sure it has been
  installed.


-- Configuring incomplete, errors occurred!

I tried to find where is JUCEConfig.cmake

 /work/juce/temp/JUCE/build$ find . -name JUCEConfig.cmake
./cmake-build-dir/tools/JUCEConfig.cmake

How am I supposed to put this path in CMAKE_PREFIX_PATHS?