From: Matthias Maier <tamiko@kyomu.43-1.org>
Date: Tue, 6 Jan 2015 10:38:12 +0000 (+0100)
Subject: CMake: Explicitly set all policies to new behavior
X-Git-Tag: v8.3.0-rc1~567^2~3
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=af0ccfadff37b7d32476b49f3512ece8be12c085;p=dealii.git

CMake: Explicitly set all policies to new behavior

We support all CMake policies up to version 3.1.0 . Thus, set them to new
behavior.
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e0eb3066a4..4f2c02d7a8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,14 +30,19 @@
 #
 # General configuration for cmake:
 #
-CMAKE_MINIMUM_REQUIRED(VERSION 2.8.8)
-
 MESSAGE(STATUS "This is CMake ${CMAKE_VERSION}")
 MESSAGE(STATUS "")
 
-IF(POLICY CMP0026)
-  # enable target LOCATION property
-  CMAKE_POLICY(SET CMP0026 OLD)
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8.8)
+
+#
+# We support all policy changes up to version 3.1.0. Thus, explicitly set
+# all policies CMP0001 - CMP0054 to new for version 3.1 (and later) to
+# avoid some unnecessary warnings.
+#
+IF( "${CMAKE_VERSION}" VERSION_EQUAL "3.1" OR
+    "${CMAKE_VERSION}" VERSION_GREATER "3.1" )
+  CMAKE_POLICY(VERSION 3.1.0)
 ENDIF()
 
 IF(POLICY CMP0037)
diff --git a/cmake/setup_finalize.cmake b/cmake/setup_finalize.cmake
index a67101827b..e77431c982 100644
--- a/cmake/setup_finalize.cmake
+++ b/cmake/setup_finalize.cmake
@@ -1,6 +1,6 @@
 ## ---------------------------------------------------------------------
 ##
-## Copyright (C) 2012 - 2014 by the deal.II authors
+## Copyright (C) 2012 - 2015 by the deal.II authors
 ##
 ## This file is part of the deal.II library.
 ##
@@ -40,7 +40,7 @@ ENDFOREACH()
 # used during the configuration stage:
 #
 FOREACH(_flag ${DEAL_II_REMOVED_FLAGS})
-  IF(NOT "${_flag}" STREQUAL "")
+  IF(NOT "${${_flag}}" STREQUAL "")
     MESSAGE(FATAL_ERROR
       "\nInternal configuration error: The variable ${_flag} was set to a "
       "non empty value during the configuration! (The corresponding "