cegui: fix build with cmake 4 (#455100)

diff --git a/CMakeLists.txt b/CMakeLists.txt

index 16b26eac8..7bbdab0c7 100755

--- a/CMakeLists.txt

+++ b/CMakeLists.txt

@@ -1,13 +1,13 @@

 ################################################################################

 # Top-level CMakeLists.txt file for Crazy Eddie's GUI System

 ################################################################################

-cmake_minimum_required(VERSION 3.1)

+cmake_minimum_required(VERSION 3.10)

 if (POLICY CMP0017)

-    cmake_policy(SET CMP0017 OLD)

+    cmake_policy(SET CMP0017 NEW)

 endif()

 if (POLICY CMP0045)

-    cmake_policy(SET CMP0045 OLD)

+    cmake_policy(SET CMP0045 NEW)

 endif()

 if (APPLE AND NOT CMAKE_OSX_ARCHITECTURES)

@@ -112,7 +112,7 @@ if(NOT ${OGRE_FOUND})

 endif()

 if(${OGRE_FOUND})

     if (${OGRE_VERSION} VERSION_GREATER 1.11)

-        set(CMAKE_CXX_STANDARD 11)

+        set(CMAKE_CXX_STANDARD 14)

         set(CMAKE_CXX_STANDARD_REQUIRED ON)

         set(CMAKE_CXX_EXTENSIONS OFF)

diff --git a/cmake/CEGUIMacros.cmake b/cmake/CEGUIMacros.cmake

index 2aca3ff3d..6c3384d63 100644

--- a/cmake/CEGUIMacros.cmake

+++ b/cmake/CEGUIMacros.cmake

@@ -51,17 +51,15 @@ endmacro()

 macro (cegui_target_link_libraries _TARGET_NAME)

     target_link_libraries(${_TARGET_NAME} ${ARGN})

-    get_target_property(_TARGET_EXISTS ${_TARGET_NAME}_Static TYPE)

-    if (_TARGET_EXISTS)

+    if (TARGET ${_TARGET_NAME}_Static)

         foreach(_LIB ${ARGN})

             if (${_LIB} STREQUAL optimized OR ${_LIB} STREQUAL debug OR ${_LIB} STREQUAL general)

                 set (_BUILD ${_LIB})

             else()

-                get_target_property(_LIB_IS_IN_PROJECT ${_LIB}_Static TYPE)

-

-                if (_LIB_IS_IN_PROJECT)

+                if (TARGET ${_LIB}_Static)

                     target_link_libraries(${_TARGET_NAME}_Static ${_BUILD} ${_LIB}_Static)

                 else()

+                    # Fall back to the provided dependency if it is not a CMake target

                     target_link_libraries(${_TARGET_NAME}_Static ${_BUILD} ${_LIB})

                 endif()

             endif()

@@ -73,9 +71,7 @@ endmacro()

 # add dynamic dependency libraries to a target

 #

 macro (cegui_add_dependency_dynamic_libs _TARGET_NAME _DEP_NAME)

-    get_target_property(_TARGET_EXISTS ${_TARGET_NAME} TYPE)

-

-    if (_TARGET_EXISTS)

+    if (TARGET ${_TARGET_NAME})

         if (${_DEP_NAME}_LIBRARIES)

             if (${_DEP_NAME}_LIBRARIES_DBG)

                 foreach(_LIB ${${_DEP_NAME}_LIBRARIES})

@@ -98,9 +94,7 @@ endmacro()

 # if static do not exist)

 #

 macro (cegui_add_dependency_static_libs _TARGET_NAME _DEP_NAME)

-    get_target_property(_TARGET_EXISTS ${_TARGET_NAME} TYPE)

-

-    if (_TARGET_EXISTS)

+    if (TARGET ${_TARGET_NAME})

         if (${_DEP_NAME}_LIBRARIES_STATIC)

             if (${_DEP_NAME}_LIBRARIES_STATIC_DBG)

                 foreach(_LIB ${${_DEP_NAME}_LIBRARIES_STATIC})

@@ -137,8 +131,16 @@ endmacro()

 #

 macro (cegui_add_dependency _TARGET_NAME _DEP_NAME)

 # Optional additional arguments: "SCOPE" "IS_SYSTEM"

-    get_target_property(_DYNAMIC_EXISTS ${_TARGET_NAME} TYPE)

-    get_target_property(_STATIC_EXISTS ${_TARGET_NAME}_Static TYPE)

+    if (TARGET ${_TARGET_NAME})

+        set(_DYNAMIC_EXISTS TRUE)

+    else()

+        set(_DYNAMIC_EXISTS FALSE)

+    endif()

+    if (TARGET ${_TARGET_NAME}_Static)

+        set(_STATIC_EXISTS TRUE)

+    else()

+        set(_STATIC_EXISTS FALSE)

+    endif()

     if ("${ARGC}" GREATER 2)

         if (("${ARGC}" GREATER 3) AND "${ARGV3}")

             if (_DYNAMIC_EXISTS)

    hash = "sha256-9lZ7eBwmxZ33XNDJXQ2lbCcH5JyH0KoY1mj/g+2HOJs=";

  };

  patches = [

    ./cmake-minimum-required.patch

  ];

  strictDeps = true;

  nativeBuildInputs = [