From 1763c31c3b964343b88f8f26dc2941dd8c0e1fbe Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Wed, 2 Oct 2013 14:45:54 -0400
Subject: [PATCH] Set policy CMP0025 to NEW while building CMake itself

CMake is aware of the policy's NEW behavior and the AppleClang compiler
id.  Set the policy to NEW explicitly to avoid the warning and get the
NEW behavior.

Also teach the RunCMake test infrastructure to build tests with
-DCMAKE_POLICY_DEFAULT_CMP0025=NEW to avoid the policy warning
in test output that must match specific regular expressions.
---
 CMakeLists.txt                  | 3 +++
 Source/kwsys/CMakeLists.txt     | 3 +++
 Tests/RunCMake/RunCMake.cmake   | 3 +++
 Utilities/cmcurl/CMakeLists.txt | 3 +++
 4 files changed, 12 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1fbbe08a1..77b460440 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,6 +11,9 @@
 #=============================================================================
 cmake_minimum_required(VERSION 2.8.2 FATAL_ERROR)
 set(CMAKE_LEGACY_CYGWIN_WIN32 0) # Remove when CMake >= 2.8.4 is required
+if(POLICY CMP0025)
+  cmake_policy(SET CMP0025 NEW)
+endif()
 project(CMake)
 
 if(CMAKE_BOOTSTRAP)
diff --git a/Source/kwsys/CMakeLists.txt b/Source/kwsys/CMakeLists.txt
index 0f2783689..a9d89d474 100644
--- a/Source/kwsys/CMakeLists.txt
+++ b/Source/kwsys/CMakeLists.txt
@@ -85,6 +85,9 @@
 # written.
 
 CMAKE_MINIMUM_REQUIRED(VERSION 2.6.3 FATAL_ERROR)
+IF(POLICY CMP0025)
+  CMAKE_POLICY(SET CMP0025 NEW)
+ENDIF()
 
 #-----------------------------------------------------------------------------
 # If a namespace is not specified, use "kwsys" and enable testing.
diff --git a/Tests/RunCMake/RunCMake.cmake b/Tests/RunCMake/RunCMake.cmake
index 00faa4ca7..6e58d6288 100644
--- a/Tests/RunCMake/RunCMake.cmake
+++ b/Tests/RunCMake/RunCMake.cmake
@@ -36,6 +36,9 @@ function(run_cmake test)
   if(NOT DEFINED RunCMake_TEST_OPTIONS)
     set(RunCMake_TEST_OPTIONS "")
   endif()
+  if(APPLE)
+    list(APPEND RunCMake_TEST_OPTIONS -DCMAKE_POLICY_DEFAULT_CMP0025=NEW)
+  endif()
   execute_process(
     COMMAND ${CMAKE_COMMAND} "${RunCMake_TEST_SOURCE_DIR}"
               -G "${RunCMake_GENERATOR}"
diff --git a/Utilities/cmcurl/CMakeLists.txt b/Utilities/cmcurl/CMakeLists.txt
index 74a713dd8..abf04d8b0 100644
--- a/Utilities/cmcurl/CMakeLists.txt
+++ b/Utilities/cmcurl/CMakeLists.txt
@@ -1,4 +1,7 @@
 CMAKE_MINIMUM_REQUIRED(VERSION 2.6.3 FATAL_ERROR)
+IF(POLICY CMP0025)
+  CMAKE_POLICY(SET CMP0025 NEW)
+ENDIF()
 PROJECT(LIBCURL C)
 
 # Setup package meta-data