title: What buck uses to actually build c++
body: <p>I am trying to experiment with buck for my personal projects but looking at the documentation, I could not find what actually happens at the build stage. When I set up a project using cxx_ options, will buck generate a makefile for me or will it produce CMakeLists.txt? Or for example, on Windows, is there chance for me to create Visual Studio project files? You can also direct me to the documentation but I could not find such information. </p>