title: How to decide library install path on different linux systems?
body: <p>Fedora have dynamic libs on <code>/usr/lib64</code> and <code>/usr/lib</code>, for 64-bit and 32-bit libs separately; while 64-bit Debian install some 64-bit libraries on <code>/usr/lib/x86_64-linux-gnu</code>, but seems some 64-bit libs are still in <code>/usr/lib</code>.</p>
  
  <p>This looks pretty messy. So when I write a cmake file for my project, how to decide the place for installing the compiled libs?</p>