From 3189ed34b819de1a67c22ecd446d815ac61649ce Mon Sep 17 00:00:00 2001
From: Flynn Marquardt <flynn@geomap.de>
Date: Mon, 2 Dec 2013 09:32:40 -0500
Subject: [PATCH] OS X: Fix app bundle search path during cross compiling
 (#14603)

In "Modules/Platform/Darwin.cmake" the variable _apps_paths stays empty
if cross compiling.  Do not de-duplicate an empty list.
---
 Modules/Platform/Darwin.cmake | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Modules/Platform/Darwin.cmake b/Modules/Platform/Darwin.cmake
index f3ec441d8..fc3f87ead 100644
--- a/Modules/Platform/Darwin.cmake
+++ b/Modules/Platform/Darwin.cmake
@@ -341,7 +341,9 @@ foreach(_path
     list(APPEND _apps_paths "${_apps}")
   endif()
 endforeach()
-list(REMOVE_DUPLICATES _apps_paths)
+if(_apps_paths)
+  list(REMOVE_DUPLICATES _apps_paths)
+endif()
 set(CMAKE_SYSTEM_APPBUNDLE_PATH
   ${_apps_paths})
 unset(_apps_paths)