I have a Package.swift in my project like:
import PackageDescription
let package = Package(
name: "ProjectName",
dependencies: [
.Package(url: "https://github.com/example/repo.git", majorVersion: 0)
]
)
When I run swift build I get errors like…
/project/Packages/WebViewController.swift:1:8: error: no such module 'UIKit'
import UIKit
^
Where should I tell the swift package manager where to find UIKit?
You have to change some swiftc options to build the project against proper sdk and target
swift build -Xswiftc "-sdk" -Xswiftc "`xcrun --sdk iphonesimulator --show-sdk-path`" -Xswiftc "-target" -Xswiftc "x86_64-apple-ios13.0-simulator"
swift build -Xswiftc "-sdk" -Xswiftc "`xcrun --sdk iphonesimulator --show-sdk-path`" -Xswiftc "-target" -Xswiftc "x86_64-apple-ios14.0-simulator"
swift build -Xswiftc "-sdk" -Xswiftc "`xcrun --sdk appletvsimulator --show-sdk-path`" -Xswiftc "-target" -Xswiftc "x86_64-apple-tvos14.3-simulator"
watchOS and macCatalyst. I've figured out I can use watchsimulator and macosx in place of iphonesimulator, but I can't figure out the list of available -target values. How did you find x86_64-apple-ios13.0-simulator?
swift build -Xswiftc "-sdk" -Xswiftc "xcrun --sdk iphonesimulator --show-sdk-path" -Xswiftc "-target" -Xswiftc "arm64-apple-ios16.2-simulator"You should select an iOS-based target to make it available:
If you leave it selecting macOS (by default), you will get the error.
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(.v10)
],
products: [
,,,
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
#endif
platforms: [.iOS(.v10)] means all macOS, tvOS etc... and iOS 10 and above
swift build it still assume macOS and will fail with errors like “error: no such module 'UIKit'”.Currently Swift Package Manager has full Xcode support. I was able to get around this error by specifying in my Package.swift manifest that the platform was iOS.
let package = Package(
name: "MyPackage",
platforms: [
.iOS(.v8)
],
Then you can open the Package.swift file in Xcode and it will just work.
The Swift Package Manager builds executables to run on OS X (or Linux); UIKit is a framework in iOS and won't be accessible.
It may be iOS, tvOS and others become accessible as Swift Package Manager evolves.
On Dec 4, 2015, at 5:39 PM, Daniel Dunbar (@apple.com) wrote:
...
Right, now we only compile for the host platform (OS X or Linux, currently). Among other things, we currently have no knowledge (or options to choose) what SDK or architecture you are targeting. We also have no mechanisms for specifying what platforms targets are compatible with in the manifest.
swift build --help shows no architecture option. Documentation at swift.org/package-manager/#conceptual-overview does only mention Darwin and Linux.
Make sure you select an iPhone as a simulator target. a Mac target is the default and that won't work...It would be awesome if Xcode could look at the manifest and choose a default simulator based on that...
Use conditional compilation blocks:
#if canImport(UIKit)
// Code specific to platforms where UIKit is available
#endif
Source: https://developer.apple.com/documentation/xcode/creating_a_swift_package_with_xcode
SPM error
no such module 'UIKit'
I run on this problem when used umbrella header(<module_name.h>)[About] which contained
#import <UIKit/UIKit.h>
it means that you can skip specifying import UIKit in every file. But it seems that SPM doesn't support it. Also I am not a supporter of using @_exported attribute
You can use next approach
#if canImport(UIKit)
import UIKit
#endif
xcodebuildinstead.