SDL3 support

Sources/CMakeLists.txt

@@ -1,2 +1,3 @@
 add_subdirectory(SwiftFrontend)
+add_subdirectory(SDL3)
 add_subdirectory(CppBackend)

Sources/SDL3/CMakeLists.txt

@@ -0,0 +1,7 @@
+add_library(SDL3 STATIC SDL3.h SDL3.cpp)
+set_property(TARGET SDL3 PROPERTY Swift_MODULE_NAME "SDL3")
+set_property(TARGET SDL3 PROPERTY CXX_STANDARD 20)
+
+target_compile_options(SDL3 PUBLIC "$<$<COMPILE_LANGUAGE:Swift>:-cxx-interoperability-mode=default>")
+target_include_directories(SDL3 PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}")
+target_link_libraries(SDL3 PUBLIC SDL3::SDL3)

Sources/SDL3/SDL3.cpp

@@ -0,0 +1 @@
+#include "SDL3.h"

Sources/SDL3/SDL3.h

@@ -0,0 +1,3 @@
+#pragma once
+
+#include <SDL3/SDL.h>

Sources/SDL3/module.modulemap

@@ -0,0 +1,3 @@
+module SDL3 {
+  header "SDL3.h"
+}

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()