Mac Catalyst issues linking to dynamic libraries

Hi,


I have an app for iOS/iPadOS that I've recently converted to support Mac Catalyst. The app used to run fine using an older version of Xcode, but now when I try and run the app on Xcode Version 11.4.1 (11E503a), I get the following error for 4 of my dependencies:


error: multiple configured targets of 'XXXX' are being created for macOS


I'm not sure how to fix this. The app runs fine on iOS and iPadOS.


Here's a Package.swift for one of my dependencies:


// swift-tools-version:5.1

import PackageDescription


let package = Package(

name: "MDFToolbox",

platforms: [

.macOS(.v10_13), .iOS(.v12), .tvOS(.v12), .watchOS(.v3)

],

products: [

.library(name: "MDFToolbox", type: .dynamic, targets: ["MDFToolbox"]),

.library(name: "MDFToolboxMocks", type: .dynamic, targets: ["MDFToolboxMocks"])

],

dependencies: [

.package(url: "git@github.com:mpdifran/Swinject.git", from: "2.7.0"),

],

targets: [

.target(name: "MDFToolbox", dependencies: ["Swinject"]),

.target(name: "MDFToolboxMocks", dependencies: ["MDFToolbox"]),

//.testTarget(name: "MDFToolboxTests", dependencies: ["MDFToolbox"])

]

)