title: error: expected expression before '/' token
body: <p>I'm no C expert, and am getting this error when trying to cross-compile a C application:</p>
  
  <pre><code>src/ls_sqlite3.c:522: error: expected expression before '/' token
  </code></pre>
  
  <p>The offending line is this:</p>
  
  <pre><code>sqlite3_busy_timeout(conn, lua_tonumber(L,3)); // TODO: remove this
  </code></pre>
  
  <p>I suspect the use of // for comments is not allowed by certain compilers or through some settings, but Google didn't help. Does someone know?</p>
  
  <p>Thank you.</p>