title: How do I invoke a GNU make macro created using define?
body: <p>Is there any difference in the two ways GREP is invoked in my Makefile?  Any reason I should use one or the other?  Both seem to produce the same result.</p>
  
  <pre><code>define GREP
  $(word 3,$(shell echo "#define  FOO     0xfff00100"))
  endef
  
  all:
          @echo $(GREP)
          @echo $(call GREP)
  </code></pre>