diff --git a/Source/cmListCommand.cxx b/Source/cmListCommand.cxx
index bc43ecbfe..017b703f2 100644
--- a/Source/cmListCommand.cxx
+++ b/Source/cmListCommand.cxx
@@ -54,6 +54,14 @@ bool cmListCommand::InitialPass(std::vector<std::string> const& args)
     {
     return this->HandleRemoveItemCommand(args);
     }
+  if(subCommand == "SORT")
+    {
+    return this->HandleSortCommand(args);
+    }
+  if(subCommand == "REVERSE")
+    {
+    return this->HandleReverseCommand(args);
+    }
 
   std::string e = "does not recognize sub-command "+subCommand;
   this->SetError(e.c_str());
@@ -302,6 +310,76 @@ bool cmListCommand
   return true;
 }
 
+//----------------------------------------------------------------------------
+bool cmListCommand
+::HandleReverseCommand(std::vector<std::string> const& args)
+{
+  if(args.size() < 2)
+    {
+    this->SetError("sub-command REVERSE requires a list as an argument.");
+    return false;
+    }
+
+  const std::string& listName = args[1];
+  // expand the variable
+  std::vector<std::string> varArgsExpanded;
+  if ( !this->GetList(varArgsExpanded, listName.c_str()) )
+    {
+    this->SetError("sub-command REVERSE requires list to be present.");
+    return false;
+    }
+
+  std::string value;
+  std::vector<std::string>::reverse_iterator it;
+  for ( it = varArgsExpanded.rbegin(); it != varArgsExpanded.rend(); ++ it )
+    {
+    if (value.size())
+      {
+      value += ";";
+      }
+    value += it->c_str();
+    }
+
+  this->Makefile->AddDefinition(listName.c_str(), value.c_str());
+  return true;
+}
+
+//----------------------------------------------------------------------------
+bool cmListCommand
+::HandleSortCommand(std::vector<std::string> const& args)
+{
+  if(args.size() < 2)
+    {
+    this->SetError("sub-command SORT requires a list as an argument.");
+    return false;
+    }
+
+  const std::string& listName = args[1];
+  // expand the variable
+  std::vector<std::string> varArgsExpanded;
+  if ( !this->GetList(varArgsExpanded, listName.c_str()) )
+    {
+    this->SetError("sub-command SORT requires list to be present.");
+    return false;
+    }
+
+  std::sort(varArgsExpanded.begin(), varArgsExpanded.end());
+
+  std::string value;
+  std::vector<std::string>::iterator it;
+  for ( it = varArgsExpanded.begin(); it != varArgsExpanded.end(); ++ it )
+    {
+    if (value.size())
+      {
+      value += ";";
+      }
+    value += it->c_str();
+    }
+
+  this->Makefile->AddDefinition(listName.c_str(), value.c_str());
+  return true;
+}
+
 //----------------------------------------------------------------------------
 bool cmListCommand::HandleRemoveAtCommand(
   std::vector<std::string> const& args)
diff --git a/Source/cmListCommand.h b/Source/cmListCommand.h
index 2989a63a9..486ff8d99 100644
--- a/Source/cmListCommand.h
+++ b/Source/cmListCommand.h
@@ -93,6 +93,8 @@ protected:
   bool HandleInsertCommand(std::vector<std::string> const& args);
   bool HandleRemoveAtCommand(std::vector<std::string> const& args);
   bool HandleRemoveItemCommand(std::vector<std::string> const& args);
+  bool HandleSortCommand(std::vector<std::string> const& args);
+  bool HandleReverseCommand(std::vector<std::string> const& args);
 
 
   bool GetList(std::vector<std::string>& list, const char* var);