Can't run TestFoundation target in swift-corelibs-foundation repository

Shohin · July 11, 2021, 4:09pm

I am starting contributing Swift Foundation framework. I am using swift-corelibs-foundation repository by following this guide: swift-corelibs-foundation/GettingStarted.md at main · apple/swift-corelibs-foundation · GitHub

But it is failed when I try to run TestFoundation:

/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.3.sdk/usr/include/fts.h:71:9: '(anonymous)' has different definitions in different modules; definition in module 'CoreFoundation' is here

swift-corelibs-foundation/CoreFoundation/Base.subproj/module.map:1:8: Redefinition of module 'CoreFoundation'

swift-corelibs-foundation/CoreFoundation/String.subproj/CFString.h:835:127: Reference to 'kCFStringEncodingASCII' is ambiguous

Could not build Objective-C module 'CoreGraphics'

Here is screenshot:

Shohin · July 12, 2021, 1:53pm

After these steps it is succeed:

Clean
Build
Run Cmd-R

Shohin · July 15, 2021, 2:08pm

I have found another solution from here also:

github.com

apple/swift-corelibs-foundation/blob/main/Docs/Issues.md

# Known Issues

* We're not yet finished implementing all of the core functionality of Foundation.

* NSDictionary, NSArray, NSSet and NSString are not yet implicitly convertible to Dictionary, Array, Set, and String. In order to translate between these types, we have temporarily added a protocol to these types that allows them to be converted. There is one method called `bridge()`.

```swift
let myArray: NSArray = ["foo", "bar", "baz"].bridge()
```

This also means that functions like map or reduce are currently unavailable on NSDictionary and NSArray.

These limitations should hopefully be very short-term.

A fix in the compiler is needed to split out the concept of "bridgeable to Objective-C" from "bridgeable to AnyObject". In the meantime, we have added the implementation of the `_ObjectiveCBridgeable` protocol to Foundation on Linux (normally it is part of the standard library).

In short: users or implementers should be careful about the implicit conversions that may be inserted automatically by the compiler. Be sure to compile and test changes on both Darwin and Linux.

* The `AutoreleasingUnsafeMutablePointer` type is not available on Linux because it requires autorelease logic provided by the Objective-C runtime. Most often this is not needed, but does create a divergence in some APIs like `NSFormatter` or the funnel methods of NSDictionary, NSArray and others. In these areas, we have proposed new API (marked with `Experiment:`) to work around use of the type. This proposed API is subject to change as the project progresses and should not yet be considered stable.

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swiftc does not order include paths. This means that build artifact module.modulemap and the installed module.modulemap will conflict with each other. To work around the issue while developing Foundation, remove /usr/local/include/CoreFoundation/module.modulemap before building.

Morten_Bek_Ditlevsen · November 12, 2021, 7:59pm

Hi @shohin,
I am also trying to contribute, but finding it really hard just to run the tests on macOS using Xcode 13.1.

I am getting the same error as you, but cleaning, building and running didn't work out for me.

Nor does the workaround since the conflicting modulemap is not under /usr/local/include/CoreFoundation, but under /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/CoreFoundation.framework/Modules - and renaming or moving this file causes a whole lot of other issues.

Might you have any other pointers for running the tests?

Kyle-Ye · February 6, 2022, 3:28am

+1 for the same issue

lukeh · March 27, 2022, 11:58pm

I am also running into this, using swift-DEVELOPMENT-SNAPSHOT-2022-03-22-a with Xcode 13.2.1. Is there a fix for this?

jhowlin · April 1, 2022, 3:33pm

I'm seeing the same problem, where the test target will not build.

Running the 3-30-22 snapshot in Xcode 13.3 on an M1.

swift-project/swift-corelibs-foundation/CoreFoundation/Base.subproj/module.map:1:8: Redefinition of module 'CoreFoundation'

Could not build Objective-C module 'CoreGraphics'

Karl · April 1, 2022, 8:07pm

Glad to know it isn't just me. I have the same issue with conflicting modulemaps coming from the SDK and SCF repository.

Fidetro · July 30, 2022, 8:10am

I'm using Xcode 13.4.1 and it still seems to have this problem, how did you fix it later?

YOCKOW · August 15, 2022, 5:59am

Although SwiftFoundation also requires just-built CoreFoundation, Xcode builds SwiftFoundation successfully.
I wonder why only building TestFoundation fails.