title: CM.make cannot find file "smlnj-lib.cm"
body: <p>When I try to use smlnj-lib.cm in a .cm file, I get this error:</p>
  
  <p>I installed SML/NJ using Homebrew on MAC OS X 10.14.2. /usr/local/smlnj/bin is in .bash_profile, .bash_profile is updated. </p>
  
  <p>sources.cm file:</p>
  
  <pre><code>Group is
  driver.sml
  errormsg.sml
  tokens.sig
  tokens.sml
  tiger.lex
  smlnj-lib.cm
  </code></pre>
  
  <p>I try to run it:</p>
  
  <pre><code>CM.make "sources.cm";
  </code></pre>
  
  <p>And get this error:</p>
  
  <pre><code>sources.cm:8.1-8.13 Error: Io: openIn failed on "smlnj-lib.cm", No such file or directory
  </code></pre>