SDL3 support

Sources/SwiftFrontend/CMakeLists.txt

@@ -1,2 +1,2 @@
 add_executable(SwiftFrontend main.swift)
-target_link_libraries(SwiftFrontend PRIVATE CppBackend)
+target_link_libraries(SwiftFrontend PRIVATE CppBackend SDL3)

Sources/SwiftFrontend/main.swift

@@ -1,4 +1,9 @@
-import CppBackend
+import Foundation
+import SDL3
 
-backend_init()
-print("Hello World")
+guard SDL_Init(SDL_INIT_VIDEO) >= 0 else {
+    print("SDL init failed.")
+    exit(0)
+}
+print("SDL init success.")
+SDL_Quit()