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diff --git a/client-compiler/src/main/java/com/vaadin/tools/WidgetsetCompiler.java b/client-compiler/src/main/java/com/vaadin/tools/WidgetsetCompiler.java
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+++ b/client-compiler/src/main/java/com/vaadin/tools/WidgetsetCompiler.java
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+/*
+ * Copyright 2000-2014 Vaadin Ltd.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.vaadin.tools;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import com.vaadin.server.widgetsetutils.WidgetSetBuilder;
+
+/**
+ * A wrapper for the GWT compiler that runs the compiler in a new thread after
+ * updating the widgetset file.
+ * 
+ * This class originally existed to allow circumventing a J2SE 5.0 bug (6316197)
+ * that prevents setting the stack size for the main thread.
+ * 
+ * This class takes the same command line arguments as the
+ * com.google.gwt.dev.Compiler class.
+ * 
+ * A typical invocation would use e.g. the following arguments
+ * 
+ * "-war WebContent/VAADIN/widgetsets com.vaadin.DefaultWidgetSet"
+ * 
+ * In addition, larger memory usage settings for the VM should be used, e.g.
+ * 
+ * "-Xms256M -Xmx512M -Xss8M"
+ * 
+ * The source directory containing widgetset and related classes must be
+ * included in the classpath, as well as other relevant JARs.
+ * 
+ * @deprecated with Java 6, can use com.google.gwt.dev.Compiler directly (also
+ *             in Eclipse plug-in etc.)
+ */
+@Deprecated
+public class WidgetsetCompiler {
+
+    /**
+     * @param args
+     *            same arguments as for com.google.gwt.dev.Compiler
+     */
+    public static void main(final String[] args) {
+        try {
+            // run the compiler in a different thread to enable using the
+            // user-set stack size
+
+            // on Windows, the default stack size is too small for the main
+            // thread and cannot be changed in JRE 1.5 (see
+            // http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6316197)
+
+            Runnable runCompiler = new Runnable() {
+                @Override
+                public void run() {
+                    try {
+                        // GWTCompiler.main(args);
+                        // avoid warnings
+
+                        String wsname = args[args.length - 1];
+
+                        // TODO expecting this is launched via eclipse WTP
+                        // project
+                        System.out
+                                .println("Updating GWT module description file...");
+                        WidgetSetBuilder.updateWidgetSet(wsname);
+                        System.out.println("Done.");
+
+                        System.out.println("Starting GWT compiler");
+                        com.google.gwt.dev.Compiler.main(args);
+                    } catch (Throwable thr) {
+                        getLogger().log(Level.SEVERE,
+                                "Widgetset compilation failed", thr);
+                    }
+                }
+            };
+            Thread runThread = new Thread(runCompiler);
+            runThread.start();
+            runThread.join();
+            System.out.println("Widgetset compilation finished");
+        } catch (Throwable thr) {
+            getLogger().log(Level.SEVERE, "Widgetset compilation failed", thr);
+        }
+    }
+
+    private static final Logger getLogger() {
+        return Logger.getLogger(WidgetsetCompiler.class.getName());
+    }
+}