How to create and build a swift package

Question

I am trying to create a new swift package i did the following commands on console

swift package init
swift package generate-xcodeproj

This works and generates an empty project. Inside the project sample file i added just one line

Import UIKit

In Xcode, this builds correctly. But on console, when I do swift build command, I get this error

/Users/home/Desktop/TT/Sources/TT/TT.swift:1:8: error: no such module 'UIKit'
import UIKit

Is there any thing I am doing wrong?

score 2 · Answer 1 · answered Feb 17 '21 at 09:04

You should select an iOS based target to make it available:

_{If you leave it selecting macOS (by default), you will get the error.}

Specific platform

if you want your package to be available only for specific platforms (for example only for iOS), you should specify the platform in the package.swift file:

let package = Package(
    name: "MyLibrary",
    platforms: [
        .iOS(.v9)
    ],
    products: [
,,,

Multiplatform

If you need your framework to be available on multiple platforms, don't forget to check the availability of the imported framework like:

#if canImport(UIKit)

import UIKit

// And do the rest of UIKit dependent code

#endif

score 1 · Accepted Answer · answered Sep 22 '19 at 17:45

1

UIKit is a framework in iOS and won't be accessible.

#if canImport(UIKit)

// Code specific to platforms where UIKit is available

#endif

Creating a Swift Package with Xcode

answered Sep 22 '19 at 17:45

excitedmicrobe

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2

your answer works. But I had to add this to all of my 50+ files. Is there some way to do this via some config? – Just a coder Sep 22 '19 at 18:34

How to create and build a swift package

2 Answers2

Specific platform

Multiplatform