fix: convert c char to Go string.

go/export.go

@@ -944,7 +944,7 @@ func remove_black(cCallback C.CB_S_I_S_S, operationID *C.char, removeUserID *C.c
 //export set_friends_ex
 func set_friends_ex(cCallback C.CB_S_I_S_S, operationID, friendIDs, ex *C.char) {
 	baseCallback := NewBaseCallback(cCallback, operationID)
-	open_im_sdk.SetFriendsEx(baseCallback, C.GoString(operationID), C.GoString(friendIDs), ex)
+	open_im_sdk.SetFriendsEx(baseCallback, C.GoString(operationID), C.GoString(friendIDs), C.GoString(ex))
 }
 
 // =====================================================group===============================================

magefile.go

@@ -65,6 +65,8 @@ func BuildIOS() error {
 	cmd := exec.Command("go", "build", "-buildmode=c-shared", "-o", outPath+"/"+soName+".dylib", ".")
 	cmd.Dir = goSrc
 	cmd.Env = os.Environ()
+	cmd.Stderr = os.Stderr
+	cmd.Stdout = os.Stdout
 
 	if err := cmd.Run(); err != nil {
 		fmt.Printf("Failed to build for iOS: %v\n", err)