Configure CMake itself with policies through CMake 4.0

CMakeLists.txt

@@ -1,7 +1,7 @@
 # Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
 # file LICENSE.rst or https://cmake.org/licensing for details.
 
-cmake_minimum_required(VERSION 3.13...3.31 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.13...4.0 FATAL_ERROR)
 set(CMAKE_USER_MAKE_RULES_OVERRIDE_C ${CMAKE_CURRENT_SOURCE_DIR}/Source/Modules/OverrideC.cmake)
 set(CMAKE_USER_MAKE_RULES_OVERRIDE_CXX ${CMAKE_CURRENT_SOURCE_DIR}/Source/Modules/OverrideCXX.cmake)
 

Source/Checks/Curses/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.13...3.31 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.13...4.0 FATAL_ERROR)
 project(CheckCurses C)
 
 set(CURSES_NEED_NCURSES TRUE)

Utilities/Doxygen/CMakeLists.txt

@@ -3,7 +3,7 @@
 
 if(NOT CMake_SOURCE_DIR)
   set(CMakeDeveloperReference_STANDALONE 1)
-  cmake_minimum_required(VERSION 3.13...3.31 FATAL_ERROR)
+  cmake_minimum_required(VERSION 3.13...4.0 FATAL_ERROR)
   get_filename_component(tmp "${CMAKE_CURRENT_SOURCE_DIR}" PATH)
   get_filename_component(CMake_SOURCE_DIR "${tmp}" PATH)
   include(${CMake_SOURCE_DIR}/Modules/CTestUseLaunchers.cmake)

Utilities/Sphinx/CMakeLists.txt

@@ -3,7 +3,7 @@
 
 if(NOT CMake_SOURCE_DIR)
   set(CMakeHelp_STANDALONE 1)
-  cmake_minimum_required(VERSION 3.13...3.31 FATAL_ERROR)
+  cmake_minimum_required(VERSION 3.13...4.0 FATAL_ERROR)
   get_filename_component(tmp "${CMAKE_CURRENT_SOURCE_DIR}" PATH)
   get_filename_component(CMake_SOURCE_DIR "${tmp}" PATH)
   include(${CMake_SOURCE_DIR}/Modules/CTestUseLaunchers.cmake)