diff --git a/tools/eclipse.py b/tools/eclipse.py
index 3a54b7c..ca7899d 100755
--- a/tools/eclipse.py
+++ b/tools/eclipse.py
@@ -37,6 +37,7 @@
 opts = OptionParser()
 opts.add_option('--src', action='store_true')
 opts.add_option('-n', '--name')
+opts.add_option('-x', '--exclude', action='append')
 args, _ = opts.parse_args()
 
 def _query_classpath(targets):
@@ -122,6 +123,8 @@
 
   for libs in [lib]:
     for j in sorted(libs):
+      if excluded(j):
+        continue
       s = None
       if j.endswith('.jar'):
         s = j[:-4] + '_src.jar'
@@ -136,6 +139,13 @@
   with open(p, 'w') as fd:
     doc.writexml(fd, addindent='\t', newl='\n', encoding='UTF-8')
 
+def excluded(lib):
+  if args.exclude:
+    for x in args.exclude:
+      if x in lib:
+        return True
+  return False
+
 try:
   if args.src:
     try: