After a recent Xcode version install (10.2) my AudioKit import statements don't work
"Module compiled with Swift 4.2.1 cannot be imported by the Swift 5.0 compiler: ".
I have thus far always used cocoa pods to install AudioKit.
Is the best thing to do here to revert Xcode and wait a while for the 5.0 version?
We just pushed a pre-release pod (version 4.6.4.b1) compiled with Swift 5 on Xcode 10.2. You can use it by following the instructions on this page:
https://github.com/AudioKit/Specs
You can use that one until the next mainstream release compiled with Xcode 10.2 is pushed out, hopefully in the coming days.
Rather than reverting Xcode, downloading and installing the 10.1 toolchain from https://swift.org/builds/swift-4.2.3-release/xcode/swift-4.2.3-RELEASE/swift-4.2.3-RELEASE-osx.pkg
then setting Xcode | Toolchains to use the Swift 4.2.3 Release allows me to keep running the existing code until Swift 5 build issues are resolved.
Alternatively use the recently pushed working staging pod. Its version number is 4.6.4.b1 - instructions are here: https://github.com/AudioKit/Specs
Related
Can anyone confirm that Mapbox Navigation works with Swift 5.0 or for that matter they are still a going concern? I have now tried building the frameworks in Carthage using Xcode 11.3 and a fresh install of Xcode 11.6 on a brand new Mac running the latest OS and in both cases when trying to import framework:
Module compiled with Swift 4.2.1 cannot be imported by the Swift 5.2.4 compiler:
According to some answers to this SO question, this happens when Developer has not yet released their app for Swift 5, although the Mapbox changelog claims they have
Have tried contacting Mapbox through every conceivable channel and radio silence. Hopefully they are still in business and supporting the software but I'm not sure.
Module compiled with Swift 4.2.1 cannot be imported by the Swift 5.1.3
compiler:
/Users/M/Desktop/War/idaru/MapboxCoreNavigation.framework/Modules/MapboxCoreNavigation.swiftmodule/arm64.swiftmodule
This error appears because you still have a built copy of MapboxCoreNavigation on your system and Xcode is linking against it instead of building from scratch. It’s always necessary to do a clean build when upgrading Xcode.
If you encounter this error message within Xcode when building your application target, please clean your build products using Product ‣ Clean Build Folder and build again. If you're seeing this error on the command line when running carthage update, you can try cleaning your Carthage caches using the following command:
rm -rf ~/Library/Caches/carthage/ ~/Library/Caches/org.carthage.CarthageKit/binaries/
I'm creating a simple Swift framework in Xcode 10.3 and trying to use a lower Swift 4.0.3 version. I went to the Xcode build settings and switch from 5.0.1 to 4.0.3 and then build the project.
I ran otool against resulted framework to make sure it's built using correct Swift version but the libraries included are still from Swift 5.0.1 (corresponds to 1001.0.82 from the output below):
otool -l SwiftyHello.framework/SwiftyHello
cmd LC_LOAD_DYLIB
cmdsize 56
name #rpath/libswiftCore.dylib (offset 24)
time stamp 2 Wed Dec 31 16:00:02 1969
current version **1001.0.82**
compatibility version 1.0.0
My toolchain is running Swift 5.0.1:
swift -version
Apple Swift version 5.0.1 (swiftlang-1001.0.82.4 clang-1001.0.46.5)
Target: x86_64-apple-darwin18.7.0
How can I make sure that the Swift framework is built using Swift 4.0.3?
SWIFT_VERSION (Swift Language Version) key does nothing with an actual Swift version of the resulting binary. From $ swift --help:
-swift-version Interpret input according to a specific Swift language version number
So, basically, Xcode executes Swift compiler with -swift-version 4 argument. It changes how Swift compiler parses the source files, but do not affect the binary in any way.
To build the actual Swift 4 binary, you have to install the Swift 4 toolchain. Then you would be able to pick the correct toolchain from the menu Xcode -> Toolchains. But, honestly, I wouldn't recommend doing this way, because Apple does not care about older versions of toolchains, and Xcode usually behaves unstable with them.
Instead, I'd recommend you install older Xcode (in your case 9.3) from the Apple Downloads website and build the project from there.
Alternatively, you can set up relatively simple CI/CD inside Github Actions, CircleCI or TravisCI and build in multiple Xcode versions at the same time there. And use the latest Xcode locally. Because they these CIs provide you multiple virtual environments with different Xcode and macOS versions.
I have a Swift Module that was fully migrated to Swift 5 using XCode version 10.2.1. When I 'distribute' the Module internally, I have no issues when integrating. When I distribute (using XCode's Organizer) the Module to another developer, they see the following error:
Module compiled with Swift 4.2.1 cannot be imported by the Swift 5.0.1
My internal applications all use Swift 5 as the build language. My XCode command line tools are version 10.2.1.
The other developer is also using Swift 5 with XCode 10.2.1.
What do I need to do to make my Module compile appropriately?
In most cases, this happens because the swift version of the module is not set correctly.
Before building the module, check the swift version of the module in Build Settings/Swift Language Version.
How is your module imported into your Xcode project? Are you using Carthage or Pod by any chance? If so, make sure your Terminal is pointing to the right XCode version prior to importing and installing your package locally via carthage or pod install.
Open a Terminal and check the selected XCode version:
/usr/bin/xcodebuild -version
If this is not the same version of XCode, make sure to point to the your current XCode app binary
sudo xcode-select -switch PATH_TO_YOUR_XCODE.APP
Import your package via carthage/pod, go back to your project in xcode, clean and build.
Short story: Xcode 10 is set to Swift 4, but it is using Swift 4.2.
Long story: Our project is not ready for Swift 4.2, since our dependent frameworks are not Swift 4.2, yet. But, I would like to, at least, use Xcode 10.
I have Xcode 9.4.1 and Xcode 10 installed.
I have Command Line Tools set to use Xcode 9.4.1:
In Xcode 10, I have the project setting, Swift Language Version, set to
Swift 4.
I have verified on the command line the Swift version the shell is
using is 4.1.2:
"swift --version Apple Swift version 4.1.2 (swiftlang-902.0.54 clang-902.0.39.2)"
I've run carthage update.
I've quit Xcode 10 and relaunched.
I have deep cleaned and deleted Derived Data.
I build and I get this error:
"Module compiled with Swift 4.1.2 cannot be imported by the Swift 4.2
compiler:
.../App/Carthage/Build/iOS/RealmSwift.framework/Modules/RealmSwift.swiftmodule/arm64.swiftmodule"
To me, this indicates that I have my intended Swift version (4.1.2) set correctly and Xcode is still trying to use the wrong version of Swift (4.2).
Does anyone have suggestions on how to resolve this? Am I missing something? Xcode bug?
I'm not positive, but my guess is that this is the reason:
I have Command Line Tools set to use Xcode 9.4.1
You have to recompile your Swift 4 dependencies using Xcode 10, because Swift is not ABI-stable, i.e. binaries compiled with different compiler versions are not compatible. And even Swift 4.0 binaries compiled with different versions of Xcode may not be compatible.
I don't have much experience with Carthage, but my guess is that you should use Xcode 10 as a command-line tool, but you have to set a different Swift language version to be used by Xcode 10. It should probably be specified in the project (in this case RealmSwift), or using environment variables, but you'll need someone else to answer with more details, I'm afraid.
Using Realm with Xcode 10 requires building it from source. In Terminal write:
git clone --recursive https://github.com/realm/realm-cocoa.git
cd realm-cocoa
sh build.sh ios-swift
you can use multiple swift toolchains. download url swift toolchain download after you install some version. restart your xcode, in xocde menu you can see toolchains option.
I had the same problem and then I realised I had not selected Xcode 10 as my Xcode. Try:
sudo xcode-select -s /Applications/Xcode10.app
Also, if you will be switching between Xcode9 and 10, I recommend you the following: If you change from 9 to 10, run mv Carthage Carthage9 and then rebuild Carthage. Whenever you want to switch back, move Carthage to Carthage10 and do mv Carthage9 Carthage. This will save you lots of time building.
I have a project built with Xcode 6.2. I included a new framework that was built with Xcode 6.3 and I am getting the following compile time error:
Module file was created by a newer version of the compiler
I haven't updated to 6.3 because it requires me to update my OS. I tried the following already, much to no avail.
Xcode: menu Product => Clean
Xcode: menu Product => Clean (while holding Option/Alt)
Removed DerivedData folder.
Is this a general issue that frameworks ALWAYS need to be built into projects with the same version of Xcode?
The deployment target version of the framework is 8.0. It contains Swift code.
The reason this error is occurring is because there was a Swift version upgrade between Xcode 6.2 and 6.3. Xcode 6.3 introduced Swift 1.2 which apparently is not backward compatible with Swift 1.1. Since a particular Swift version ships with a particular version of Xcode you get the error above.