diff --git a/Modules/CPackBundle.cmake b/Modules/CPackBundle.cmake
index d8293c01e..d26a0b32b 100644
--- a/Modules/CPackBundle.cmake
+++ b/Modules/CPackBundle.cmake
@@ -33,6 +33,31 @@
 #  Path to a startup script. This is a path to an executable or script that
 #  will be run whenever an end-user double-clicks the generated bundle in the
 #  OSX Finder. Optional.
+#
+# .. variable:: CPACK_BUNDLE_APPLE_CERT_APP
+#
+#  The name of your Apple supplied code signing certificate for the application.
+#  The name usually takes the form "Developer ID Application: [Name]" or
+#  "3rd Party Mac Developer Application: [Name]". If this variable is not set
+#  the application will not be signed.
+#
+# .. variable:: CPACK_BUNDLE_APPLE_ENTITLEMENTS
+#
+#  The name of the plist file that contains your apple entitlements for sandboxing
+#  your application. This file is required for submission to the Mac App Store.
+#
+# .. variable:: CPACK_BUNDLE_APPLE_CODESIGN_FILES
+#
+#  A list of additional files that you wish to be signed. You do not need to
+#  list the main application folder, or the main executable. You should
+#  list any frameworks and plugins that are included in your app bundle.
+#
+# .. variable:: CPACK_COMMAND_CODESIGN
+#
+#  Path to the codesign(1) command used to sign applications with an
+#  Apple cert. This variable can be used to override the automatically
+#  detected command (or specify its location if the auto-detection fails
+#  to find it.)
 
 #=============================================================================
 # Copyright 2006-2009 Kitware, Inc.
diff --git a/Source/CPack/cmCPackBundleGenerator.cxx b/Source/CPack/cmCPackBundleGenerator.cxx
index 6c994f13f..fbd1d216b 100644
--- a/Source/CPack/cmCPackBundleGenerator.cxx
+++ b/Source/CPack/cmCPackBundleGenerator.cxx
@@ -39,6 +39,21 @@ int cmCPackBundleGenerator::InitializeInternal()
     return 0;
     }
 
+  if(this->GetOption("CPACK_BUNDLE_APPLE_CERT_APP"))
+    {
+    const std::string codesign_path = cmSystemTools::FindProgram("codesign",
+       std::vector<std::string>(), false);
+
+    if(codesign_path.empty())
+      {
+      cmCPackLogger(cmCPackLog::LOG_ERROR,
+        "Cannot locate codesign command"
+        << std::endl);
+      return 0;
+      }
+    this->SetOptionIfNotSet("CPACK_COMMAND_CODESIGN", codesign_path.c_str());
+    }
+
   return this->Superclass::InitializeInternal();
 }
 
@@ -53,7 +68,7 @@ const char* cmCPackBundleGenerator::GetPackagingInstallPrefix()
 }
 
 //----------------------------------------------------------------------
-int cmCPackBundleGenerator::PackageFiles()
+int cmCPackBundleGenerator::ConstructBundle()
 {
 
   // Get required arguments ...
@@ -165,6 +180,22 @@ int cmCPackBundleGenerator::PackageFiles()
     cmSystemTools::SetPermissions(command_target.str().c_str(), 0777);
     }
 
+  return 1;
+}
+
+//----------------------------------------------------------------------
+int cmCPackBundleGenerator::PackageFiles()
+{
+  if(!this->ConstructBundle())
+    {
+    return 0;
+    }
+
+  if(!this->SignBundle(toplevel))
+    {
+    return 0;
+    }
+
   return this->CreateDMG(toplevel, packageFileNames[0]);
 }
 
@@ -172,3 +203,96 @@ bool cmCPackBundleGenerator::SupportsComponentInstallation() const
 {
   return false;
 }
+
+
+int cmCPackBundleGenerator::SignBundle(const std::string& src_dir)
+{
+  const std::string cpack_apple_cert_app =
+    this->GetOption("CPACK_BUNDLE_APPLE_CERT_APP")
+    ? this->GetOption("CPACK_BUNDLE_APPLE_CERT_APP") : "";
+
+  // codesign the application.
+  if(!cpack_apple_cert_app.empty())
+    {
+    std::string bundle_path;
+    bundle_path = src_dir + "/";
+    bundle_path += this->GetOption("CPACK_BUNDLE_NAME");
+    bundle_path += ".app";
+
+    // A list of additional files to sign, ie. frameworks and plugins.
+    const std::string sign_files =
+      this->GetOption("CPACK_BUNDLE_APPLE_CODESIGN_FILES")
+      ? this->GetOption("CPACK_BUNDLE_APPLE_CODESIGN_FILES") : "";
+
+    std::vector<std::string> relFiles;
+    cmSystemTools::ExpandListArgument(sign_files, relFiles);
+
+    // sign the files supplied by the user, ie. frameworks.
+    for(std::vector<std::string>::iterator it = relFiles.begin();
+      it != relFiles.end(); ++it)
+      {
+      cmOStringStream temp_sign_file_cmd;
+      temp_sign_file_cmd << this->GetOption("CPACK_COMMAND_CODESIGN");
+      temp_sign_file_cmd << " --deep -f -s \"" << cpack_apple_cert_app;
+      temp_sign_file_cmd << "\" -i ";
+      temp_sign_file_cmd << this->GetOption("CPACK_APPLE_BUNDLE_ID");
+      temp_sign_file_cmd << " \"";
+      temp_sign_file_cmd << bundle_path;
+      temp_sign_file_cmd << it->c_str() << "\"";
+
+      if(!this->RunCommand(temp_sign_file_cmd))
+        {
+        cmCPackLogger(cmCPackLog::LOG_ERROR,
+          "Error signing file:"
+          << bundle_path << it->c_str() << std::endl);
+
+        return 0;
+        }
+      }
+
+    // sign main binary
+    cmOStringStream temp_sign_binary_cmd;
+    temp_sign_binary_cmd << this->GetOption("CPACK_COMMAND_CODESIGN");
+    temp_sign_binary_cmd << " --deep -f -s \"" << cpack_apple_cert_app;
+    temp_sign_binary_cmd << "\" \"" << bundle_path << "\"";
+
+    if(!this->RunCommand(temp_sign_binary_cmd))
+      {
+      cmCPackLogger(cmCPackLog::LOG_ERROR,
+        "Error signing the application binary."
+        << std::endl);
+
+      return 0;
+      }
+
+    // sign app bundle
+    cmOStringStream temp_codesign_cmd;
+    temp_codesign_cmd << this->GetOption("CPACK_COMMAND_CODESIGN");
+    temp_codesign_cmd << " --deep -f -s \"" << cpack_apple_cert_app << "\"";
+    if(this->GetOption("CPACK_BUNDLE_APPLE_ENTITLEMENTS"))
+      {
+      temp_codesign_cmd << " --entitlements ";
+      temp_codesign_cmd << this->GetOption("CPACK_BUNDLE_APPLE_ENTITLEMENTS");
+      }
+    temp_codesign_cmd << " \"" << bundle_path << "\"";
+
+    if(!this->RunCommand(temp_codesign_cmd))
+      {
+      cmCPackLogger(cmCPackLog::LOG_ERROR,
+        "Error signing the application package."
+        << std::endl);
+
+      return 0;
+      }
+
+    cmCPackLogger(cmCPackLog::LOG_OUTPUT,
+      "- Application has been codesigned"
+      << std::endl);
+    cmCPackLogger(cmCPackLog::LOG_VERBOSE,
+       (this->GetOption("CPACK_BUNDLE_APPLE_ENTITLEMENTS")
+         ? "with entitlement sandboxing" : "without entitlement sandboxing")
+       << std::endl);
+  }
+
+  return 1;
+}
diff --git a/Source/CPack/cmCPackBundleGenerator.h b/Source/CPack/cmCPackBundleGenerator.h
index ed0187dd4..9cb2f0ac7 100644
--- a/Source/CPack/cmCPackBundleGenerator.h
+++ b/Source/CPack/cmCPackBundleGenerator.h
@@ -31,6 +31,8 @@ public:
 protected:
   virtual int InitializeInternal();
   virtual const char* GetPackagingInstallPrefix();
+  int ConstructBundle();
+  int SignBundle(const std::string& src_dir);
   int PackageFiles();
   bool SupportsComponentInstallation() const;