I'm trying to create a kitura app, but got stuck at the first steps:
Created empty directory
swift package init --type executable
swift build
The result: Build output
I've tried reinstalling command line tools as well as xcode itself with no success..
Thanks in advance!
Related
I'm trying to create a command line app that runs on macOS and uses CoreML. I am using Swift Package Manager. Here are some steps to reproduce the problem:
Run
swift package init --type executable
Move a CoreML model into the Sources folder, for example, CNNEmotions.mlmodel
In main.swift, write
print(CNNEmotions()) // CNNEmotions is the name of the generated model type
I know that CoreML only runs on macOS and iOS., so in Package.swift, I added a platform parameter:
let package = Package.init(
name: "MyProject",
platforms: [
.macOS(.v10_13), // this is the minimum macOS version that supports CoreML
],
...
Run
swift build
And there will be an error saying that CNNEmotions is an unresolved identifier.
If I do swift package generate-xcodeproj and open up the project in Xcode, I can see that the .mlmodel file is not added to the project at all!
This person on Apple Forums seems to also be in the same situation as me, but there are no answers to their question...
How can I make SPM work with mlmodels?
Just when I thought it's the end of the world, I found that if I add the .mlmodel file into the project in Xcode, the program can compile and run successfully. But the problem with building it in Xcode is that it's quite inconvenient. It doesn't produce an executable in a convenient location (I have to go all the way to the DerivedData folder to find it). To be honest, I would just like a convenient command to build & run it, like swift build. This is my ultimate goal.
I am following some tutorials, basically trying to start an echo server in swift, without xcode, just command line and plain text editors, so I can get a grasp of the ecosystem
but I found this error for which there seems to be no solution already online
swift package init --type executable
error: unable to invoke subcommand: /Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.14.xctoolchain/usr/bin/swift-package (No such file or directory)
It looks like I was pointing to the Swift compiler in the OS toolchain (which doesn't have swiftpm)
So after running
export TOOLCHAINS=default swift package init --type executable
The command worked successfully
I'm having trouble running swift package generate-xcodeproj. I created my package like this:
$ /Applications/Xcode9.4.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift package init --type executable
(as I have many Xcode versions installed I explicitly targeted a swift binary when running the command so that I don't need to xcode-select all the time)
This created a Package.swift with the version header // swift-tools-version:4.0.
Now, when I run swift package generate-xcodeproj I get a fatal error:
$ /Applications/Xcode9.4.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift package generate-xcodeproj
/Users/max.chuquimia/Desktop/xcode/MyPackage: error: manifest parse error(s):
<unknown>:0: error: Swift does not support the SDK 'MacOSX10.12.sdk'
No .xcodeproj is generated. Why is this occurring?
It seems the problem is the $DEVELOPER_DIR environment variable is wrong - it should also be made to point to the Xcode version that the swift binary resides in.
$ DEVELOPER_DIR=/Applications/Xcode9.4.1.app/Contents/Developer /Applications/Xcode9.4.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift package generate-xcodeproj
I am currently following the small and brief introduction to Swift Vapor by following their "Hello World" tutorial on their website. However I keep getting an error from swift-package when I try to build the project where it shows the following.
$ vapor build
No .build folder, fetch may take a while...
Fetching Dependencies [Failed]
Error: swift-package: error: unknown command: --enable-prefetching
I cannot seem to find out how to resolve this online. Anybody have any idea?
you have not mentioned your environment, so i'm giving solution for macOS.
I had the same issue, my swift version is 3.0.2 and vapor toolbox version is 1.0.9,
I tried the following thing to make it work
get into your project directory
create xcode project with command
swift package generate-xcodeproj
open xcode project
Select your scheme as App like this
and then build and run app
hope this helps!!
Make sure that you're using the correct command line tools for the Swift Version that you're using.
You can check from Xcode > Preferences > Locations > Command Line Tools
For me, using swift 3.0.2, vapor build command doesn't work neither.
However using swift 3.1.0, vapor build command works well.
My Vapor toolbox version is v1.1.0
I had the same problem, and I had Swift 3.1 installed. I deleted old version completely and installed new one and now it's building fine.
Try
rm -rf /usr/local/bin/vapor
brew tap vapor/homebrew-tap

than
brew install vapor
or
brew link vapor
if you have installed a new version previously.
I am currently following the document from swift.org to play around with the new Swift Package Manager.
I cloned the demo project from Github and run the following command from terminal.
git clone https://github.com/apple/example-package-dealer.git
cd example-package-dealer
swift build
.build/debug/Dealer
While I run swift build, error arise.
<unknown>:0: error: no such file or directory: 'build'
Any idea?
I stuck for an hour. Sadly, it's just an epic fail that downloading the wrong swift package. If you want to use swift build, MAKE SURE you download the development version.
You did not add the newly installed swift to your PATH. The instructions for doing that are here.
On OS X:
export PATH=/Library/Developer/Toolchains/swift-latest.xctoolchain/usr/bin:"${PATH}"
On Linux:
export PATH=/path/to/Swift/usr/bin:"${PATH}"
Then to test it works:
swift build --version
I think it is a problem with the latest snapshot:
Ubuntu 14.04 Swift 2.2 Snapshot of January 11 contains swift-build in usr/bin
Ubuntu 14.04 Swift 2.2 Snapshot of January 25 doesn't contain swift-build in usr/bin
Besides, the January 25 release also seems to miss other files (libFoundation.so and libXCTest.so in usr/lib/swift/linux for instances).
Either there has been a structure change....or, simply, the latest snapshot had a problem ;)
While they fix the snapshot, simply take the older (January 11th) snapshot, and you should be fine.
I was facing the same issue and in my case, I recently updated my Xcode to 8.2.1 and swift 3.0 comes with it.
I was getting this log.
Ranvijay-Mac-mini:PerfectTemplate ranaranvijaysingh$ swift build
error: unable to invoke subcommand: /Library/Developer/CommandLineTools/usr/bin/swift-build (No such file or directory)
The path it was taking was incorrect. It was suppose to be:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
To change the path, run this command.
export PATH=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin:$PATH
And DONE.
Run : swift build again on your project and if you get this error.
xcrun: error: unable to lookup item 'PlatformPath' from command line tools installation
xcrun: error: unable to lookup item 'PlatformPath' in SDK '/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk'
error: Invalid platform path
then you need to change the SDK path as well.
In my case, I had two .sdk at path
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/
MacOSX.sdk MacOSX10.12.sdk
To know what is your SDK path, run this command.
xcrun --sdk macosx --show-sdk-path
My case i got this.
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk
To change it run this command.
sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer
and NOW DONE.
Try running swift build now.