title: how to make bitbake print options of do_configure
body: <p>I'm having trouble cross compiling Qt5 for beaglebone using openembedded with bitbake. I think in step <code>do_configure</code> not everything is passed from my *.bbappend and no platform plugins are installed (I need 'linuxfb').</p>
  
  <p>My question will be: how to make bitbake print list of arguments it passes to <code>./configure</code>?</p>