build(swiftui): add support for arm64 arch and build universal swiftu…

…i client app

We build the go source to static lib of arm64 and amd64 arch and merge them into a single static lib
using `lipo` tool. Then we can build and link an universal swiftui client app using `xcodebuild`.

.gitignore

@@ -1,4 +1,6 @@
 extra/go-api/libwssocks_go_api.a
+extra/go-api/libwssocks_go_api_arm64.a
+extra/go-api/libwssocks_go_api_amd64.a
 extra/go-api/libwssocks_go_api.h
 
 .DS_Store

extra/go-api/Makefile

@@ -0,0 +1,23 @@
+# this makefile builds go api into an archive file (static library)
+
+BUILD_FLAGS=--trimpath -gcflags "-N"
+
+BUILD_ENVS=CGO_ENABLED=1 CGO_CFLAGS="-mmacosx-version-min=12.1" CGO_CXXFLAGS="-mmacosx-version-min=12.1" CC=clang
+
+.PHONY: all clean
+
+all: libwssocks_go_api.a
+
+libwssocks_go_api_amd64.a: wssocks_client_wrapper.go
+	$(BUILD_ENVS) GOOS=darwin GOARCH=amd64 go build $(BUILD_FLAGS) --buildmode=c-archive -o libwssocks_go_api_amd64.a
+	mv libwssocks_go_api_amd64.h libwssocks_go_api.h
+
+libwssocks_go_api_arm64.a: wssocks_client_wrapper.go
+	$(BUILD_ENVS) GOOS=darwin GOARCH=arm64 go build $(BUILD_FLAGS) --buildmode=c-archive -o libwssocks_go_api_arm64.a
+	mv libwssocks_go_api_arm64.h libwssocks_go_api.h
+
+libwssocks_go_api.a: libwssocks_go_api_amd64.a libwssocks_go_api_arm64.a
+	lipo libwssocks_go_api_amd64.a libwssocks_go_api_arm64.a -create -output libwssocks_go_api.a
+
+clean:
+	rm libwssocks_go_api.a libwssocks_go_api_arm64.a libwssocks_go_api_amd64.a libwssocks_go_api.h

swiftui-client/README.md

@@ -6,12 +6,10 @@
 1. build C header file and archive file from go API.  
     ```bash
     cd extra/go-api
-    ./build_archive.sh
+    make
     ```
 
-2. Update target’s build settings  
- In Xcode, set `SWIFT_INCLUDE_PATHS` (Header Search Paths) to `$(SRCROOT)`,
- where `$(SRCROOT)` is the same directory as .xcodeproj.
- Then `LIBRARY_SEARCH_PATHS` (Library Search Paths) to `$(SRCROOT)/../extra/go-api`.
-
-3. Build application in Xcode.  
+2. Build App
+    ```bash
+    xcodebuild -arch=x86_64 -arch=arm64
+    ```

swiftui-client/wssocks-ustb-client.xcodeproj/project.pbxproj

@@ -441,6 +441,7 @@
 		8021423027BA823700643775 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = NO;
 				ARCHS = "$(ARCHS_STANDARD)";
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
@@ -453,7 +454,7 @@
 				DEVELOPMENT_TEAM = "";
 				ENABLE_HARDENED_RUNTIME = YES;
 				ENABLE_PREVIEWS = YES;
-				EXCLUDED_ARCHS = arm64;
+				EXCLUDED_ARCHS = "";
 				GENERATE_INFOPLIST_FILE = YES;
 				HEADER_SEARCH_PATHS = "${SRCROOT}/";
 				INFOPLIST_FILE = "wssocks-ustb-client/Info.plist";
@@ -476,6 +477,7 @@
 		8021423127BA823700643775 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = NO;
 				ARCHS = "$(ARCHS_STANDARD)";
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
@@ -488,7 +490,7 @@
 				DEVELOPMENT_TEAM = "";
 				ENABLE_HARDENED_RUNTIME = YES;
 				ENABLE_PREVIEWS = YES;
-				EXCLUDED_ARCHS = arm64;
+				EXCLUDED_ARCHS = "";
 				GENERATE_INFOPLIST_FILE = YES;
 				HEADER_SEARCH_PATHS = "${SRCROOT}/";
 				INFOPLIST_FILE = "wssocks-ustb-client/Info.plist";