From 09be0bb0494dcf35f80f74f442e05e6b39736e73 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 7 Oct 2013 14:06:04 -0400
Subject: [PATCH] Set IDE folder for CMake 'documentation' target only if it
 exists

The documentation target will be come optional, so do not reference it
when it does not exist.
---
 CMakeLists.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e36daeef5..eb515d7cb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -573,7 +573,9 @@ if(BUILD_TESTING)
   CMAKE_SET_TARGET_FOLDER(CMakeLibTests "Tests")
 endif()
 CMAKE_SET_TARGET_FOLDER(cmw9xcom "Utilities/Win9xCompat")
-CMAKE_SET_TARGET_FOLDER(documentation "Documentation")
+if(TARGET documentation)
+  CMAKE_SET_TARGET_FOLDER(documentation "Documentation")
+endif()
 
 # add a test
 add_test(SystemInformationNew "${CMAKE_CMAKE_COMMAND}"