title: Makefile variable
body: <p>Hi I have <code>makefile</code> with variable, somethings like this : <br/></p>
  
  <pre><code>NDK     := ~/Application/Android/SDK/NDK
  ARCH    := arm
  ifeq ($(ARCH),arm)
  //..etc..
  endif
  </code></pre>
  
  <p>but when I try to <code>makefile</code> i get this error :</p>
  
  <pre><code>: NDK: command not found
  : ARCH: command not found
  : syntax error near unexpected token `$(ARCH),arm'
  </code></pre>
  
  <p>I'm on ubuntu<br/>
  that is variable I know, but why i got error for them ? whats wrong anf how to fix ?<br/>
  I'm new in ubuntu!</p>