1 files changed, 52 insertions, 0 deletions
diff --git a/make/validate-properties.xml b/make/validate-properties.xml
new file mode 100644
index 000000000..3afb12bd5
--- /dev/null
+++ b/make/validate-properties.xml
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- 
+   - A validator for all of the user-defined properties.  It will be called
+   - from build.xml in the "init" task.
+  -->
+<project name="Configuration validator" default="validate">
+
+    <!-- ================================================================== -->
+    <!-- 
+       - Ensure that "antlr.jar" is set.
+      -->
+    <target name="antlr.jar.validate" unless="antlr.jar">
+        <fail>
+        
+    *****************************************************************
+    ** The property "antlr.jar" was not set in the JOGL properties **
+    ** file                                                        **
+    ** "${user.properties.file}"               **
+    ** (or this file was not found).                               **
+    **                                                             **
+    ** Please set "antlr.jar" to to the full path of the ANTLR jar **
+    ** including the jar itself.                                   **
+    *****************************************************************
+        </fail>
+    </target>
+
+    <!-- 
+       - Make sure that jogl.jar is not on the CLASSPATH; this can cause
+       - builds to fail since if this Java process has the jar file open
+       - we can not overwrite it.
+      -->
+    <target name="java.class.path.validate">
+      <available property="jogl.jar.on.class.path" classname="javax.media.opengl.GL" />
+      <fail if="jogl.jar.on.class.path">
+        
+    ******************************************************************
+    ** Your CLASSPATH environment variable appears to be set (some  **
+    ** JOGL classes are currently visible to the build.) This can   **
+    ** cause the build to fail. Please unset your CLASSPATH         **
+    ** variable and restart the build.                              **
+    ******************************************************************
+      </fail>
+    </target>
+
+    <!-- ================================================================== -->
+    <!-- 
+       - Validate the required properties 
+      -->
+    <target name="validate" depends="antlr.jar.validate, java.class.path.validate" 
+            description="Validate required properties" />
+
+</project>