CMake: Short term fix for policy CMP0169

Sets policy CMP0169 to OLD to prevent dev warnings related to FetchContent_Populate(<name>).

This needs fixing propperly for longer term support, see #1223

cmake/dependencies/Jitify.cmake

@@ -5,6 +5,10 @@
 set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/modules/ ${CMAKE_MODULE_PATH})
 include(FetchContent)
 cmake_policy(SET CMP0079 NEW)
+# Temporary CMake >= 3.30 fix https://github.com/FLAMEGPU/FLAMEGPU2/issues/1223
+if(POLICY CMP0169)
+    cmake_policy(SET CMP0169 OLD)
+endif()
 
 # Change the source-dir to allow inclusion via jitify/jitify.hpp rather than jitify.hpp
 FetchContent_Declare(

cmake/dependencies/Thrust.cmake

@@ -6,6 +6,10 @@ set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/modules/ ${CMAKE_MODULE_PATH})
 
 include(FetchContent)
 cmake_policy(SET CMP0079 NEW)
+# Temporary CMake >= 3.30 fix https://github.com/FLAMEGPU/FLAMEGPU2/issues/1223
+if(POLICY CMP0169)
+    cmake_policy(SET CMP0169 OLD)
+endif()
 
 # Set the minimum supported cub/thrust version, and the version to fetch
 # Thrust minimum version to 1.16 to avoid windows.h related issues and pull in bug fixes, but fetch the most recent 1.x release otherwise (at the time of writing).

cmake/dependencies/Tinyxml2.cmake

@@ -6,6 +6,10 @@ set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/modules/ ${CMAKE_MODULE_PATH})
 include(FetchContent)
 
 cmake_policy(SET CMP0079 NEW)
+# Temporary CMake >= 3.30 fix https://github.com/FLAMEGPU/FLAMEGPU2/issues/1223
+if(POLICY CMP0169)
+    cmake_policy(SET CMP0169 OLD)
+endif()
 
 # Change the source_dir to allow inclusion via tinyxml2/tinyxml2.h rather than tinyxml2.h
 FetchContent_Declare(

cmake/dependencies/flamegpu2-visualiser.cmake

@@ -5,6 +5,10 @@
 set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/modules/ ${CMAKE_MODULE_PATH})
 include(FetchContent)
 cmake_policy(SET CMP0079 NEW)
+# Temporary CMake >= 3.30 fix https://github.com/FLAMEGPU/FLAMEGPU2/issues/1223
+if(POLICY CMP0169)
+    cmake_policy(SET CMP0169 OLD)
+endif()
 
 # Set the visualiser repo and tag to use unless overridden by the user.
 set(DEFAULT_FLAMEGPU_VISUALISATION_GIT_VERSION "flamegpu-2.0.0-rc.1")

cmake/dependencies/glm.cmake

@@ -6,6 +6,10 @@
 if(POLICY CMP0135)
   cmake_policy(SET CMP0135 NEW)
 endif()
+# Temporary CMake >= 3.30 fix https://github.com/FLAMEGPU/FLAMEGPU2/issues/1223
+if(POLICY CMP0169)
+    cmake_policy(SET CMP0169 OLD)
+endif()
 
 set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/modules/ ${CMAKE_MODULE_PATH})
 include(FetchContent)

cmake/dependencies/googletest.cmake

@@ -5,6 +5,10 @@
 set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/modules/ ${CMAKE_MODULE_PATH})
 include(FetchContent)
 cmake_policy(SET CMP0079 NEW)
+# Temporary CMake >= 3.30 fix https://github.com/FLAMEGPU/FLAMEGPU2/issues/1223
+if(POLICY CMP0169)
+    cmake_policy(SET CMP0169 OLD)
+endif()
 
 FetchContent_Declare(
   googletest

cmake/dependencies/rapidjson.cmake

@@ -6,6 +6,10 @@ set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/modules/ ${CMAKE_MODULE_PATH})
 include(FetchContent)
 include(ExternalProject)
 cmake_policy(SET CMP0079 NEW)
+# Temporary CMake >= 3.30 fix https://github.com/FLAMEGPU/FLAMEGPU2/issues/1223
+if(POLICY CMP0169)
+    cmake_policy(SET CMP0169 OLD)
+endif()
 
 # a95e013b97ca6523f32da23f5095fcc9dd6067e5 is the last commit before a change which breaks our method of finding rapid json without running a cmake install first.
 # but we also need to patch this to avoid a cmake >= 3.26.4 deprecation, but this is handled manually post-population

swig/CMakeLists.txt

@@ -1,7 +1,10 @@
 # Minimum CMake version 3.18 for CUDA --std=c++17 
 cmake_minimum_required(VERSION 3.18...3.25 FATAL_ERROR)
 include(FetchContent)
-
+# Temporary CMake >= 3.30 fix https://github.com/FLAMEGPU/FLAMEGPU2/issues/1223
+if(POLICY CMP0169)
+    cmake_policy(SET CMP0169 OLD)
+endif()
 
 # Set some policy behaviours for SWIG