diff --git a/livesupport/doc/developmentTools.html b/livesupport/doc/developmentTools.html
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--- a/livesupport/doc/developmentTools.html
+++ b/livesupport/doc/developmentTools.html
@@ -59,6 +59,11 @@ environment variable WANT_AUTOCONF_2_5="1" before compiling the tools.)</li>
   </li>
 </ul>
 <h1>Libraries</h1>
+Note that if you are installing these libraries as binary packages, then you
+will need to install the "development" package, as well.  (For example, for
+libpng, you might need to install the <code>libpng</code> and 
+<code>libpng-dev</code> packages.  The package names vary by distribution.)
+<br>
 <h2>Required libraries<br>
 </h2>
 The following development libraries are expected on the development