javah doesn't support command line argument files. PR 43320

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@795690 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/OptionalTasks/javah.html

@@ -42,6 +42,12 @@ name="implementationvalues">Here are the choices</a>:</p>
   <li>kaffeh (the native standard compiler of <a href="http://www.kaffe.org" target="_top">Kaffe</a>)</li>
 </ul>
 
+<p><b>Note:</b> if you are using this task to work on multiple files
+  the command line may become too long on some operating systems.
+  Unfortunately the javah command doesn't support command argument
+  files the way javac (for example) does, so all that can be done is
+  breaking the amount of classes to compile into smaller chunks.</p>
+
 <h3>Parameters</h3>
 <table border="1" cellpadding="2" cellspacing="0">
   <tr>