title: Compiling HelenOS using ninja gives error "ninja: no work to do"
body: <p>I am trying to compile HelenOS, the way I'm pretty sure compile it by is using the command &quot;ninja&quot;, but when I use the command it will give an error saying ninja: no work to do, if anyone can help that'd be great, thanks. Here is a link to the GitHub:
  <a href="https://github.com/HelenOS/helenos" rel="nofollow noreferrer">https://github.com/HelenOS/helenos</a></p>