title: How to read file from Makefile?
body: <p>I am using GNU Make to build a multiple-directory project. 
  My question is how can I use single makefile to build multiple devices? 
  e.g. My application has to run on various X,Y,Z mobile devices each having different properties like screensize, keyboard type, platform version etc. I have to pass <code>make -f &lt;makefilename&gt; &lt;targetname&gt;</code>. Here targetname can be device name and model like Samsung CorbyPlus, but my makefile has to go to particular dirname of samsung and open the .txt file or so where all above properties are defined. I have to read all of them during build time and access in my code through some macros/defines/flags.</p>
  
  <p>Can anyone suggest how to do this? Even better solution for my requirement will be appreciated.</p>