Swift 5.2 snapshot error

Using Swift
#1

I have bug when trying to compile SwiftUI project in Xcode 11.3 on Swift 5.2 nightly snapshot:

ld: file not found: /Library/Developer/Toolchains/swift-5.2-DEVELOPMENT-SNAPSHOT-2020-01-06-a.xctoolchain/usr/lib/clang/7.0.0/lib/darwin/libclang_rt.profile_iossim.a

how can I fix this?

#2

I have the same issue. Any updates?

#3

Which snapshot have you used?

#4

Swift 5.2 Development

https://swift.org/builds/swift-5.2-branch/xcode/swift-5.2-DEVELOPMENT-SNAPSHOT-2020-01-25-a/swift-5.2-DEVELOPMENT-SNAPSHOT-2020-01-25-a-osx.pkg

#5

The same issue on Trunk Development (master)

https://swift.org/builds/development/xcode/swift-DEVELOPMENT-SNAPSHOT-2020-01-24-a/swift-DEVELOPMENT-SNAPSHOT-2020-01-24-a-osx.pkg

file not found: /Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2020-01-24-a.xctoolchain/usr/lib/clang/7.0.0/lib/darwin/libclang_rt.profile_iossim.a

#6

Latest Xcode snapshots seem to be generally busted. I get the same error as @nonameplum when building Alamofire for iOS, and I'm getting a variety of other bizarre errors when building for Catalyst:

 <unknown>:0: warning: using sysroot for 'MacOSX' but targeting 'iPhone'
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/CoreGraphics.framework/Headers/CGDisplayConfiguration.h:12:10: note: while building module 'IOKit' imported from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/CoreGraphics.framework/Headers/CGDisplayConfiguration.h:12:
#include <IOKit/IOKitLib.h>
         ^
<module-includes>:121:9: note: in file included from <module-includes>:121:
#import "Headers/usb/IOUSBLib.h"
        ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/IOKit.framework/Headers/usb/IOUSBLib.h:27:10: note: in file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/IOKit.framework/Headers/usb/IOUSBLib.h:27:
#include <IOKit/usb/USB.h>
         ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/IOKit.framework/Headers/usb/USB.h:29:10: note: in file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/IOKit.framework/Headers/usb/USB.h:29:
#include <IOKit/usb/USBSpec.h>
         ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/IOKit.framework/Headers/usb/USBSpec.h:38:10: error: 'IOKit/usb/IOUSBHostFamily.h' file not found
#include <IOKit/usb/IOUSBHostFamily.h>
         ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/IOKit.framework/Headers/usb/USBSpec.h:38:10: note: did not find header 'usb/IOUSBHostFamily.h' in framework 'IOKit' (loaded from '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks')
#include <IOKit/usb/IOUSBHostFamily.h>
         ^
<module-includes>:1:9: note: in file included from <module-includes>:1:
#import "Headers/CoreGraphics.h"
        ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/CoreGraphics.framework/Headers/CoreGraphics.h:42:10: note: in file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/CoreGraphics.framework/Headers/CoreGraphics.h:42:
#include <CoreGraphics/CGDisplayConfiguration.h>
         ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/CoreGraphics.framework/Headers/CGDisplayConfiguration.h:12:10: error: could not build module 'IOKit'
#include <IOKit/IOKitLib.h>
         ^
<unknown>:0: error: could not build Objective-C module 'CoreGraphics'

Additionally, our tests fail to build on macOS due to changes in the URLCache initializers:

#if swift(>=5.1)
    if #available(OSX 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *) {
        let directory = FileManager.default.temporaryDirectory.appendingPathComponent(UUID().uuidString)
        cache = URLCache(memoryCapacity: capacity, diskCapacity: capacity, directory: directory)
    } else {
        cache = URLCache(memoryCapacity: capacity, diskCapacity: capacity, diskPath: UUID().uuidString)
    }
    #else
    cache = URLCache(memoryCapacity: capacity, diskCapacity: capacity, diskPath: UUID().uuidString)
#endif

This no longer builds, as it appears the new initializer has changed to public init(__memoryCapacity memoryCapacity: Int, diskCapacity: Int, directoryURL: URL?), which I'm guess is an issue with the importer.

Where should I report these bugs? Is the generation of these overlays open source?

#7

Apple's Feedback Assistant is probably the best bet. Looks like errors are actually in the Platform SDKs.

#8

I've submitted FB7552681, feel free to let me know if it should be duplicated in Swift's bug reporter.

#9

I have the same issue for Swift 5.1.3. build error that it cannot find the libclang_rt.profile_iossim.a file.

#10

I have just learned that this is being tracked in https://bugs.swift.org/browse/SR-12001, which has a workaround. I'll paste it here in case the link breaks:

This happens because the toolchains don't include compiler-rt libraries for iOS. We're looking into this, but in the meantime you can work around the problem by copying the compiler-rt libraries from Xcode. A command like this will take care of it (adjust the toolchain path as needed):

sudo cp xcode-select -p/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/ /lib/darwin/libclang_rt. .a /Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2019-12-03-a.xctoolchain/usr/lib/clang/7.0.0/lib/darwinc

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