Try fix.

Package.swift

@@ -14,16 +14,23 @@ let package = Package(
         .visionOS(.v1),
     ],
     products: [
-        .library(name: "LAME", targets: ["LAME"])
+        // Things get complicated when we change the libaray type from static to dynamic.
+        // A wrapper is required. https://stackoverflow.com/a/65255303
+        .library(name: "LAME", type: .dynamic, targets: ["LAME-Target"])
     ],
     dependencies: [],
     targets: [
+        .target(
+            name: "LAME-Target",
+            dependencies: ["LAME-Prebuild"],
+            path: "SwiftPM"
+        ),
 //        .binaryTarget(
-//            name: "LAME",
+//            name: "LAME-Prebuild",
 //            path: "macosx/LAME.xcframework"
 //        ),
         .binaryTarget(
-            name: "LAME",
+            name: "LAME-Prebuild",
             url: "https://github.com/BB9z/LAME-xcframework/releases/download/3.100.1/LAME.xcframework.zip",
             checksum: "cc45eb59d17ec4c38f75bb054d01faca3aaefeeaee544ca0c7a07e6820898c0f"
         )

SwiftPM/dummy.c

@@ -0,0 +1,8 @@
+//
+//  dummy.c
+//  
+//
+//  Created by BB9z on 2024/7/5.
+//
+
+#include "dummy.h"

SwiftPM/include/dummy.h

@@ -0,0 +1,8 @@
+//
+//  dummy.h
+//  
+//
+//  Created by BB9z on 2024/7/5.
+//
+
+// Prevent a missing umbrella header warning.