centralize windows version as well

.github/workflows/validate.yml

@@ -167,6 +167,8 @@ jobs:
 
           cmake -DCMAKE_BUILD_TYPE=${{ matrix.type }} -DCMAKE_CXX_COMPILER_LAUNCHER=ccache -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER=clang-cl -DCMAKE_C_COMPILER=clang-cl -DCMAKE_MAKE_PROGRAM=ninja -G Ninja -S . -B cmake-build -DCMAKE_CXX_FLAGS="-Xclang -fexceptions -Xclang -fcxx-exceptions"
           cmake --build cmake-build --config ${{ matrix.type }} --target Zelda64Recompiled -j $cpuCores
+        env:
+          SDL2_VERSION: ${{ inputs.SDL2_VERSION }}
       - name: Prepare Archive
         run: |
           Move-Item -Path "cmake-build/Zelda64Recompiled.exe" -Destination "Zelda64Recompiled.exe"

CMakeLists.txt

@@ -179,11 +179,17 @@ endif()
 
 if (WIN32)
     include(FetchContent)
+
+    if (DEFINED ENV{SDL2_VERSION})
+        set(SDL2_VERSION $ENV{SDL2_VERSION})
+    else()
+        set(SDL2_VERSION "2.28.5")
+    endif()
+
     # Fetch SDL2 on windows
     FetchContent_Declare(
         sdl2
-        URL https://github.com/libsdl-org/SDL/releases/download/release-2.28.5/SDL2-devel-2.28.5-VC.zip
-        URL_HASH MD5=d8173db078e54040c666f411c5a6afff
+        URL https://github.com/libsdl-org/SDL/releases/download/release-${SDL2_VERSION}/SDL2-devel-${SDL2_VERSION}-VC.zip
     )
     FetchContent_MakeAvailable(sdl2)
     target_include_directories(Zelda64Recompiled PRIVATE