title: Find the number of the job in parallel gnu-make
body: <p>When running make with -j, is it possible to find the number of a running job?</p>
  
  <p>For example with a Makefile like:</p>
  
  <pre><code>SUBDIRS = a b c
  
  default: all
  
  $(SUBDIRS)::
      $(MAKE) -C $@ $(MAKECMDGOALS)
  
  all clean : $(SUBDIRS)
  </code></pre>
  
  <p>if I run <code>make -j4</code> can I echo some variable that is different for each job?</p>
  
  <p>Is that number even available?</p>