title: Bitbake cannot find the header file of another recipe
body: <p>I am having a package which is depending on asterisk. As it is depending on asterisk I included DEPENDS = "asterisk" in bitbake file.But my source package cannot locate "asterisk.h" which is available in asterisk package.I tried "bitbake asterisk -c listtasks" in this command [do_populate_sysroot] was available.But from where bitbake is expecting the asterisk.h to reside, so that it can fetch from there.
  Following is the log error I am getting while compiling my recipe.</p>
  
  <pre><code>checking for string.h... (cached) yes
   checking for sys/time.h... (cached) yes
   checking for termios.h... (cached) yes
   checking whether asterisk.h in ../include... no
   checking whether asterisk.h in /usr/include... no
   checking whether asterisk.h in /usr/local/include... no
   checking whether asterisk.h in /opt/local/include... no
   configure: error: Can't find "asterisk.h"
  </code></pre>
  
  <p>NOTE: The following config.log files may provide further information.</p>