refactor swift shim

.gitignore

@@ -5,3 +5,5 @@
 /.vscode
 /.idea
 .DS_Store
+/build/
+/cmake-build-*/

Sources/CMakeLists.txt

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

Sources/SDL3/CMakeLists.txt

@@ -1,9 +0,0 @@
-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}")
-
-find_library(SDL3_LIB SDL3 REQUIRED)
-target_link_libraries(SDL3 PUBLIC ${SDL3_LIB})

Sources/SDL3/SDL3.cpp

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

Sources/SDL3/module.modulemap

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

Sources/SDLSwift/CMakeLists.txt

@@ -0,0 +1,9 @@
+find_library(SDL3 SDL3 REQUIRED)
+
+add_library(SDLSwift INTERFACE)
+set_property(TARGET SDLSwift PROPERTY Swift_MODULE_NAME "SDL3")
+
+target_compile_options(SDLSwift INTERFACE "$<$<COMPILE_LANGUAGE:Swift>:-cxx-interoperability-mode=default>")
+target_include_directories(SDLSwift INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}")
+
+target_link_libraries(SDLSwift INTERFACE ${SDL3})

Sources/SDLSwift/module.modulemap

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

Sources/SwiftFrontend/CMakeLists.txt

@@ -1,5 +1,5 @@
 add_executable(SwiftFrontend MACOSX_BUNDLE main.swift Application.swift)
-target_link_libraries(SwiftFrontend PRIVATE CppBackend SDL3)
+target_link_libraries(SwiftFrontend PRIVATE CppBackend SDLSwift)
 set_target_properties(SwiftFrontend PROPERTIES
   XCODE_ATTRIBUTE_ENABLE_HARDENED_RUNTIME NO
   MACOSX_BUNDLE_BUNDLE_NAME "cxxswift"

Sources/SwiftFrontend/main.swift

@@ -1,4 +1,3 @@
 import Foundation
-import SDL3
 
 exit(Application().run())