wiiu: use custom static SDL2 build

CMake/Dependencies.cmake

@@ -61,6 +61,13 @@ else()
   elseif(UWP_LIB)
     list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/3rdParty/SDL2/CMake")
     find_package(SDL2 REQUIRED)
+  elseif(WIIU)
+    # This 
+    add_subdirectory(CMake/platforms/wiiu/SDL2)
+    if(TARGET SDL2::SDL2main)
+      set(SDL2_MAIN SDL2::SDL2main)
+    endif()
+    list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMake/platforms/wiiu/SDL2")
   else()
     add_subdirectory(3rdParty/SDL2)
     if(TARGET SDL2::SDL2main)

CMake/platforms/wiiu.cmake

@@ -19,5 +19,10 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/threads-stub")
 
 list(APPEND DEVILUTIONX_PLATFORM_COMPILE_DEFINITIONS __WIIU__)
 
-# The 3ds build handles the stripping in a custom way.
+# The wiiU build handles the stripping in a custom way.
 set(DEVILUTIONX_DISABLE_STRIP ON)
+
+# The SDL2 version in the pacman repos is currently several versions behind.
+# The Wii U build is using a custom version for now.
+# TODO: remove this once this version is upstreamed to the pacman repos
+set(DEVILUTIONX_SYSTEM_SDL2 OFF)

CMake/platforms/wiiu/SDL2/CMakeLists.txt

@@ -0,0 +1,7 @@
+include(functions/FetchContent_MakeAvailableExcludeFromAll)
+include(FetchContent)
+FetchContent_Declare(SDL2
+    GIT_REPOSITORY https://github.com/GaryOderNichts/SDL
+    GIT_TAG        d0b060f616729c8031f9a0201c83c149d22b3930
+)
+FetchContent_MakeAvailableExcludeFromAll(SDL2)