Make runtime optional, start a CI yml.

.github/workflows/build.yml

@@ -0,0 +1,32 @@
+name: build
+
+on: [push, pull_request]
+
+jobs:
+  windows-msvc:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: windows-latest
+            arch: x64
+            target_arch: x86_64
+    
+    name: windows-msvc-${{ matrix.target_arch }}
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      
+      - uses: lukka/get-cmake@latest
+
+      - uses: TheMrMilchmann/setup-msvc-dev@v3
+        with:
+          arch: ${{ matrix.arch }}
+
+      - name: Build
+        shell: cmd
+        run: |
+          cmake -B build
+          cmake --build build --config Release

CMakeLists.txt

@@ -4,7 +4,13 @@ project("PS2 Retro X")
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
+option(PS2X_RUNTIME OFF)
+
 add_subdirectory("ps2xRecomp")
-add_subdirectory("ps2xRuntime")
+
+if (PS2X_RUNTIME)
+    add_subdirectory("ps2xRuntime")
+endif()
+
 add_subdirectory("ps2xAnalyzer")
 add_subdirectory("ps2xTest")