Consume Swift Package for multiple targets and platforms in a project?

问题

I have a project with multiple targets, such as an iOS app, a watchOS app, and some frameworks. How can I assign the same Swift Package to all my targets? Xcode only let's me select one:

If I try to add the Swift Package again so I can try assigning it to another target in my project, I get an error:

What is the correct way to do this? Below is what the package manifest looks like in the Swift Package. Is there something to be done on that side or something I have to do different in Xcode?

import PackageDescription

let package = Package(
    name: "Alamofire",
    platforms: [
        .macOS(.v10_12),
        .iOS(.v10),
        .tvOS(.v10),
        .watchOS(.v3)
    ],
    products: [
        .library(
            name: "Alamofire",
            targets: ["Alamofire"])
    ],
    targets: [
        .target(
            name: "Alamofire",
            path: "Source")
    ],
    swiftLanguageVersions: [.v5]
)

回答1:

I had the same problem, and I only found this two solutions:

First, add the package to the first target:

Then, the first option is going to the other target, General tab, and in Frameworks, Libraries and Embedded Content press +, select the package and press Add:

The other option is going to build Phases and repeat a similar way in Link Binary With Libraries:

At the moment, I only know this options, I hope in the future Apple could improve this with a multi-check, for example.

回答2:

If you add a new target after you added the dependency, then you will have to remove the dependency from the project and then add it back in again. Otherwise the library will not show up in the framework chooser.

It's annoying that the one reliable thing Xcode can do with Swift Package Manager is crash for me. So make sure you have a backup of the project because it can get to a state that just opening it will crash Xcode.

来源：https://stackoverflow.com/questions/57625952/consume-swift-package-for-multiple-targets-and-platforms-in-a-project