diff --git a/tools/mergejs.py b/tools/mergejs.py
index 387a6004b9..5a8ec42b4e 100755
--- a/tools/mergejs.py
+++ b/tools/mergejs.py
@@ -53,12 +53,21 @@ class SourceFile:
     Represents a Javascript source code file.
     """
 
-    def __init__(self, filepath, source):
+    def __init__(self, filepath, source, cfgExclude):
         """
         """
         self.filepath = filepath
         self.source = source
 
+        self.excludedFiles = [] 
+        self.requiredFiles = [] 
+        auxReq = re.findall(RE_REQUIRE, self.source) 
+        for filename in auxReq: 
+            if undesired(filename, cfgExclude): 
+                self.excludedFiles.append(filename) 
+            else: 
+                self.requiredFiles.append(filename) 
+
         self.requiredBy = []
 
 
@@ -67,8 +76,7 @@ class SourceFile:
         Extracts the dependencies specified in the source code and returns
         a list of them.
         """
-        # TODO: Cache?
-        return re.findall(RE_REQUIRE, self.source)
+        return self.requiredFiles
 
     requires = property(fget=_getRequirements, doc="")
 
@@ -176,7 +184,7 @@ def run (sourceDirectory, outputFilename = None, configFile = None,
         print "Importing: %s" % filepath
         fullpath = os.path.join(sourceDirectory, filepath).strip()
         content = open(fullpath, "U").read() # TODO: Ensure end of line @ EOF?
-        files[filepath] = SourceFile(filepath, content) # TODO: Chop path?
+        files[filepath] = SourceFile(filepath, content, cfg.exclude) # TODO: Chop path?
 
     print
 
@@ -200,7 +208,7 @@ def run (sourceDirectory, outputFilename = None, configFile = None,
                     if os.path.exists(fullpath):
                         print "Importing: %s" % path
                         content = open(fullpath, "U").read() # TODO: Ensure end of line @ EOF?
-                        files[path] = SourceFile(path, content) # TODO: Chop path?
+                        files[path] = SourceFile(path, content, cfg.exclude) # TODO: Chop path?
                     else:
                         raise MissingImport("File '%s' not found (required by '%s')." % (path, filepath))
         
@@ -229,6 +237,9 @@ def run (sourceDirectory, outputFilename = None, configFile = None,
         for fp in order:
             fName = os.path.normpath(os.path.join(sourceDirectory, fp)).replace("\\","/")
             print "Append: ", fName
+            f = files[fp]
+            for fExclude in f.excludedFiles: 
+                print "  Required file \"%s\" is excluded." % fExclude 
             result.append(fName)
         print "\nTotal files: %d " % len(result)
         return result
@@ -237,6 +248,8 @@ def run (sourceDirectory, outputFilename = None, configFile = None,
     for fp in order:
         f = files[fp]
         print "Exporting: ", f.filepath
+        for fExclude in f.excludedFiles: 
+            print "  Required file \"%s\" is excluded." % fExclude 
         result.append(HEADER % f.filepath)
         source = f.source
         result.append(source)