From 81a3f228824058849368f9c3a8e318c02fa03097 Mon Sep 17 00:00:00 2001
From: "Daniele E. Domenichelli" <daniele.domenichelli@iit.it>
Date: Wed, 7 May 2014 15:41:18 +0200
Subject: Do not change minimum required version in modules

Some modules change CMake minimum required version when they are
included. For example:

  cmake_minimum_required(VERSION 2.8.12)
  message("${CMAKE_MINIMUM_REQUIRED_VERSION}")
  include(CheckTypeSize)
  message("${CMAKE_MINIMUM_REQUIRED_VERSION}")

will produce the following output:

  2.8.12
  2.6

This patch ensures that when you include a CMake module the minimum
required version and the policies set are left unchanged.

Fixes Issue #14864
---
 Modules/CheckTypeSize.cmake | 2 +-
 Modules/FindCUDA.cmake      | 5 -----
 Modules/FindGTK2.cmake      | 1 -
 3 files changed, 1 insertion(+), 7 deletions(-)

diff --git a/Modules/CheckTypeSize.cmake b/Modules/CheckTypeSize.cmake
index ad3b6b5..8ce6b88 100644
--- a/Modules/CheckTypeSize.cmake
+++ b/Modules/CheckTypeSize.cmake
@@ -79,7 +79,7 @@ include(CheckIncludeFile)
 include(CheckIncludeFileCXX)
 
 cmake_policy(PUSH)
-cmake_minimum_required(VERSION 2.6 FATAL_ERROR)
+cmake_policy(VERSION 3.0)
 
 get_filename_component(__check_type_size_dir "${CMAKE_CURRENT_LIST_FILE}" PATH)
 
diff --git a/Modules/FindCUDA.cmake b/Modules/FindCUDA.cmake
index d1c31a4..d9809ad 100644
--- a/Modules/FindCUDA.cmake
+++ b/Modules/FindCUDA.cmake
@@ -330,11 +330,6 @@
 
 # FindCUDA.cmake
 
-# We need to have at least this version to support the VERSION_LESS argument to 'if' (2.6.2) and unset (2.6.3)
-cmake_policy(PUSH)
-cmake_minimum_required(VERSION 2.6.3)
-cmake_policy(POP)
-
 # This macro helps us find the location of helper files we will need the full path to
 macro(CUDA_FIND_HELPER_FILE _name _extension)
   set(_full_name "${_name}.${_extension}")
diff --git a/Modules/FindGTK2.cmake b/Modules/FindGTK2.cmake
index 15bcab8..eaa5e55 100644
--- a/Modules/FindGTK2.cmake
+++ b/Modules/FindGTK2.cmake
@@ -572,7 +572,6 @@ endif()
 # If specified, enforce version number
 #
 if(GTK2_FIND_VERSION)
-    cmake_minimum_required(VERSION 2.6.2)
     set(GTK2_FAILED_VERSION_CHECK true)
     if(GTK2_DEBUG)
         message(STATUS "[FindGTK2.cmake:${CMAKE_CURRENT_LIST_LINE}] "
-- 
cgit v0.12