From 31cefa01020542528e199ec78a7cf2319a843009 Mon Sep 17 00:00:00 2001
From: Peter Heywood <peethwd@gmail.com>
Date: Wed, 10 Aug 2022 13:43:35 +0100
Subject: [PATCH] Prevent CMake dev warnings in Cmake >= 3.24 due to new policy

---
 cmake/dependencies/devil.cmake | 7 ++++++-
 cmake/dependencies/glew.cmake  | 4 ++++
 cmake/dependencies/glm.cmake   | 5 +++++
 cmake/dependencies/sdl2.cmake  | 4 ++++
 4 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/cmake/dependencies/devil.cmake b/cmake/dependencies/devil.cmake
index a0a6afe..1c714b7 100644
--- a/cmake/dependencies/devil.cmake
+++ b/cmake/dependencies/devil.cmake
@@ -1,6 +1,5 @@
 # DevIL
 # Ensure that DevIL is available, either by finding DevIL, or by downloading DevIL if required (on windows) 
-    
 if(UNIX)
     # On Linux, if DevIL is not available the user is instructed to install it themselves.
     find_package(DevIL)
@@ -9,6 +8,12 @@ if(UNIX)
                         "e.g. sudo apt install libdevil-dev")
     endif()
 elseif(WIN32)
+
+    # As the URL method is used for download, set the policy if available
+    if(POLICY CMP0135)
+    cmake_policy(SET CMP0135 NEW)
+    endif()
+
     # On windows, always download manually. There are issues with find_package and multi-config generators where a release library will be found, but no debug library, which can break things.
     # Declare source properties
     FetchContent_Declare(
diff --git a/cmake/dependencies/glew.cmake b/cmake/dependencies/glew.cmake
index b327322..63ab99f 100644
--- a/cmake/dependencies/glew.cmake
+++ b/cmake/dependencies/glew.cmake
@@ -10,6 +10,10 @@ if(UNIX)
                             "e.g. sudo apt install libglew-dev")
     endif ()
 elseif(WIN32)
+    # As the URL method is used for download, set the policy if available
+    if(POLICY CMP0135)
+        cmake_policy(SET CMP0135 NEW)
+    endif()
     # On windows, always download manually. There are issues with find_package and multi-config generators where a release library will be found, but no debug library, which can break things.
     # Declare source properties
     FetchContent_Declare(
diff --git a/cmake/dependencies/glm.cmake b/cmake/dependencies/glm.cmake
index caf5781..70951f7 100644
--- a/cmake/dependencies/glm.cmake
+++ b/cmake/dependencies/glm.cmake
@@ -5,6 +5,11 @@ if(NOT glm_FOUND)
     set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/../modules/ ${CMAKE_MODULE_PATH})
     include(FetchContent)
 
+    # As the URL method is used for download, set the policy if available
+    if(POLICY CMP0135)
+        cmake_policy(SET CMP0135 NEW)
+    endif()
+
     # Head of master at point BugFix for NVRTC support was merged
     FetchContent_Declare(
         glm
diff --git a/cmake/dependencies/sdl2.cmake b/cmake/dependencies/sdl2.cmake
index a7890dd..1024044 100644
--- a/cmake/dependencies/sdl2.cmake
+++ b/cmake/dependencies/sdl2.cmake
@@ -10,6 +10,10 @@ if(UNIX)
 elseif(WIN32)
     # On windows, always download manually. There are issues with find_package and multi-config generators where a release library will be found, but no debug library, which can break things.
     # Declare source properties
+    # As the URL method is used for download, set the policy if available
+    if(POLICY CMP0135)
+        cmake_policy(SET CMP0135 NEW)
+    endif()
     FetchContent_Declare(
         SDL2
         URL "https://www.libsdl.org/release/SDL2-devel-2.0.12-VC.zip"