wasm-component-ld through w2c2

Package.swift

@@ -23,6 +23,7 @@ let package = Package(
     platforms: [.macOS(.v15), .iOS(.v18)],
     products: [
         .executable(name: "wasmkit-cli", targets: ["CLI"]),
+        .executable(name: "wasm-component-ld", targets: ["wasm-component-ld"]),
         .library(name: "WasmKit", targets: ["WasmKit"]),
         .library(name: "WasmKitWASI", targets: ["WasmKitWASI"]),
         .library(name: "WASI", targets: ["WASI"]),
@@ -43,6 +44,23 @@ let package = Package(
             dependencies: ["CLICommands"],
             exclude: ["CMakeLists.txt"]
         ),
+        .executableTarget(
+            name: "wasm-component-ld",
+            path: "Sources/wasm-component-ld",
+            cSettings: [
+                .define("HAS_UNISTD", to: "1"),
+                .define("HAS_SYSUIO", to: "1"),
+                .define("HAS_SYSTIME", to: "1"),
+                .define("HAS_SYSRESOURCE", to: "1"),
+                .define("HAS_STRNDUP", to: "1"),
+                .define("HAS_FCNTL", to: "1"),
+                .define("HAS_LSTAT", to: "1"),
+                .define("HAS_GETENTROPY", to: "1"),
+                .define("HAS_TIMESPEC", to: "1"),
+                .define("_BSD_SOURCE", to: "1", .when(platforms: [.macOS])),
+                .unsafeFlags(["-std=c90", "-fno-modules"]),
+            ]
+        ),
         .target(
             name: "WasmKit",
             dependencies: [

Sources/wasm-component-ld/main.c

@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "w2c2_base.h"
+#include "wasi/wasi.h"
+#include "wasm-component-ld.h"
+
+void
+trap(
+    Trap trap
+) {
+    fprintf(stderr, "TRAP: %s\n", trapDescription(trap));
+    abort();
+}
+
+wasmMemory*
+wasiMemory(
+    void* instance
+) {
+    return wasmcomponentld_memory((wasmcomponentldInstance*)instance);
+}
+
+extern char** environ;
+
+int
+main(
+    int argc,
+    char* argv[]
+) {
+    if (!wasiInit(argc, argv, environ)) {
+        fprintf(stderr, "failed to init WASI\n");
+        return 1;
+    }
+
+    if (!wasiFileDescriptorAdd(-1, ".", NULL)) {
+        fprintf(stderr, "failed to add current-directory preopen\n");
+        return 1;
+    }
+
+    {
+        wasmcomponentldInstance instance;
+        wasmcomponentldInstantiate(&instance, NULL);
+        wasmcomponentld__start(&instance);
+        wasmcomponentldFreeInstance(&instance);
+    }
+
+    return 0;
+}