title: In CLion, how do you set CMakeLists.txt option values?
body: <p>I'm trying to use CLion (latest version - 2019.3) to work on a source repository of mine, which already uses CMake (i.e. has a <code>CMakeLists.txt</code>). Now, the package has some options regarding which targets to build; by default it builds just a few, but if you set an option to <code>ON</code>, then a bunch of tests are compiled and built.</p>
  
  <p>Unfortunately, I don't quite see where CLion lets you set CMake option values for the build subdirectories it generates. Is it really forcing the defaults on you, or am I missing something in the main UI or the preferences?</p>