title: I am getting error "X... no configure: error: X development" while installing gtk+-3.12.2
body: <p>I am getting the error below while running the <code>./configure</code> script when installing the gtk+-3.12.2 package.</p>
  
  <p>I have already installed libX11-1.6.2 package.</p>
  
  <p><strong>checking for gdk-pixbuf-csource... $HOME/pratik/local/bin/gdk-<br>
     pixbuf-csource checking for X... no configure: error: X development 
     libraries not found</strong></p>
  
  <p>How can I fix this issue ?</p>