How do I see which version of Swift I'm using?

Question

I just created a new Swift project within Xcode. I am wondering which version of Swift it's using.

How can I see, in Xcode or the terminal, what version of Swift I am using inside my project?

Besides the title of http://stackoverflow.com/questions/29140476/how-can-i-programmatically-find-swifts-version%22 I find no **similarity** to this question that's enough to label this question as it's **duplicate**. The essence of this question is not how to find the version of Swift **programmatically**, but how to find the version of Swift in a **general** way (via terminal or Xcode or etc.). This is a big difference. — David Snabel, Jun 06 '16 at 09:54

matt · Answer 1 · 2015-06-11T20:18:38.897

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What I do is say in the Terminal:

$ xcrun swift -version

Output for Xcode 6.3.2 is:

Apple Swift version 1.2 (swiftlang-602.0.53.1 clang-602.0.53)

Of course that assumes that your xcrun is pointing at your copy of Xcode correctly. If, like me, you're juggling several versions of Xcode, that can be a worry! To make sure that it is, say

$ xcrun --find swift

and look at the path to Xcode that it shows you. For example:

/Applications/Xcode.app/...

If that's your Xcode, then the output from -version is accurate. If you need to repoint xcrun, use the Command Line Tools pop-up menu in Xcode's Locations preference pane.

edited Jun 11 '15 at 20:18

answered Jun 11 '15 at 20:13

matt

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You can also use `xcode-select -p` to print the path to the Xcode that xcrun will use, and `sudo xcode-select -s /path/to/Xcode.app` to change it. – Jack Lawrence Sep 15 '15 at 03:32
4

I just started to learn ios development and I am surprised that xcode does not let you choose the version of swift nor even let you know the version from GUI. – Alex Feb 08 '16 at 02:13
@RadekWilczak I don't know what you mean by "should be". I just copied the posted command and pasted into Terminal and hit Return, and it works. So maybe there's another alternative, but what I said isn't wrong. – matt Sep 01 '16 at 15:18
1

This gave me the wrong answer. Because swift is configured per target. See the answer below from @Krunal for the best answer. – Andrew Paul Simmons Oct 03 '17 at 23:42
I agree with all the "the correct way is to set the SWIFT_VERSION" per project. However, in earlier Xcode versions like 8.2, it doesn't state clearly in the UI what version of XCode is supported in the project, and just has "Use Legacy Swift Language Version" in the UI with Yes, No, unspecified. The command line approach is extremely useful to be able to quickly query the answer to what is the max swift version available. – truedat101 Nov 15 '18 at 17:26

score 572 · Accepted Answer · edited Jul 01 '22 at 18:08

572

Project build settings have a block 'Swift Compiler - Languages', which stores information about Swift Language Version in key-value format. It will show you all available (supported) Swift Language Version for your Xcode and active version also by a tick mark.

Project ► (Select Your Project Target) ► Build Settings ► (Type 'swift_version' in the Search bar) Swift Compiler Language ► Swift Language Version ► Click on Language list to open it (and there will be a tick mark on any one of list-item, that will be current swift version).

Look at this snapshot, for easy understanding:

With help of following code, programmatically you can find Swift version supported by your project.

#if swift(>=5.7)
print("Hello, Swift 5.7")

#elseif swift(>=5.6)
print("Hello, Swift 5.6")

#elseif swift(>=5.5)
print("Hello, Swift 5.5")

#elseif swift(>=5.4)
print("Hello, Swift 5.4")

#elseif swift(>=5.3)
print("Hello, Swift 5.3")

#elseif swift(>=5.2)
print("Hello, Swift 5.2")

#elseif swift(>=5.1)
print("Hello, Swift 5.1")

#elseif swift(>=5.0)
print("Hello, Swift 5.0")

#elseif swift(>=4.2)
print("Hello, Swift 4.2")

#elseif swift(>=4.1)
print("Hello, Swift 4.1")

#elseif swift(>=4.0)
print("Hello, Swift 4.0")

#elseif swift(>=3.2)
print("Hello, Swift 3.2")

#elseif swift(>=3.0)
print("Hello, Swift 3.0")

#elseif swift(>=2.2)
print("Hello, Swift 2.2")

#elseif swift(>=2.1)
print("Hello, Swift 2.1")

#elseif swift(>=2.0)
print("Hello, Swift 2.0")

#elseif swift(>=1.2)
print("Hello, Swift 1.2")

#elseif swift(>=1.1)
print("Hello, Swift 1.1")

#elseif swift(>=1.0)
print("Hello, Swift 1.0")

#endif

Here is result using Playground (with Xcode 11.x)

edited Jul 01 '22 at 18:08

shim

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answered Sep 06 '17 at 17:10

Krunal

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I think this is correct answer. Easier than calling terminal. (especially if you have different version of Xcode installed) – Mike Keskinov Sep 12 '17 at 18:04
27

This is the correct answer because swift version is configured on a per target basis. – Andrew Paul Simmons Oct 03 '17 at 23:42
2

I don't see this propoerty in my project with Xcode 8.1 – logoff Nov 09 '17 at 09:15
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you can see this property on latest versions of xcode – Parkhya Dev Nov 25 '17 at 08:01
If you are using cocoa pods and downgrade swift this way you _might_ have to reinstall your pods for them to compile properly with the new swift version. – vlz Dec 11 '18 at 14:34
It the value is _Unspecified_, how can you tell what you're compiling against? – bshirley Dec 20 '18 at 17:23
I could see this in Xcode 10.0. In 10.1, I can't find it anymore. Where did it go? – Jon McClung Jan 14 '19 at 21:02
1

@JonMcClung - The same option is availble in Xcode 10.1 also. I just checked it. – Krunal Jan 17 '19 at 09:41
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@Krunal, yeah my bad. I was checking on the wrong project -- it was Objective-C based and didn't have any Swift code, so that's probably why. – Jon McClung Jan 17 '19 at 15:06
What about when it says 'unspecified'? – Mercutio Jul 15 '19 at 19:33
@Mercutio - Can you please share your code, so we can check the issue. Almost we have covered all the versions of Swift there may not be such scope. Either you may be trying with Objective-C project. – Krunal Jul 16 '19 at 09:32
I'm using this approach to make a table of which versions of Swift are supported by each version of Xcode: https://stackoverflow.com/a/52819598/3939277 – Ky - Oct 15 '19 at 21:06
1

When I look in my project's build settings it shows 'Swift 5'. If I open a terminal and type 'swift -version' it returns 'Swift version 5.1.3' so using the terminal is giving more detailed information. I'm using Xcode version 11.3.1 – paulo62 Jan 28 '20 at 13:02
For newbies like me, when XCode 11 looks a little different, note that you simply need to click on the project icon at the top of the file hierarchy on the left sidebar to view this Project UI, the blueprint icon with your project name above the folder containing your swift files. Then this info is easily accessible under `Swift Compiler - Language` (in `Swift Language Version`) in the Build Settings tab. – ruffin Jun 06 '20 at 15:57
The max version is not precise there xcrun swift -version is good one – Devanshu Saini Jul 15 '20 at 06:24
1

This is helpful for editors and environments other than Xcode! – PetrV Mar 16 '22 at 03:31

Abdulrazzaq Alzayed · Answer 3 · 2017-01-24T11:27:50.490

134

Open the Terminal and write:

swift -version

edited Jan 24 '17 at 11:27

answered Jun 02 '16 at 18:44

Abdulrazzaq Alzayed

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This is not necessarily the version of swift that Xcode sees. Besides, you can have swift without having Xcode. – asiby Apr 18 '17 at 22:12

Aditya Deshmane · Answer 4 · 2017-08-03T09:34:29.960

From Xcode 8.3 onward Build Settings has key Swift Language Version with a value of swift version your target is using.

For older Xcodes use this solution, open terminal and type following command(s)

Case 1: You have installed only one Xcode App

swift -version

Case 2: You have installed multiple Xcode Apps

Switch active developer directory (Replace Xcode_7.3.app from following command with your Xcode app file name from Application directory for which you want to check swift version)
```
 sudo xcode-select --switch /Applications/Xcode_7.3.app/Contents/Developer
```
Then
```
 swift -version
```

NOTE: From Xcode 8 to Xcode 8.2.x you can use swift 2.3 even though Xcode 8 uses swift 3.x as default swift version. To use swift 2.3, just turn on flag Use Legacy Swift Language Version to YES from Build Setting and XCode will use Swift 2.3 for that project target.

score 26 · Answer 5 · answered Jun 09 '17 at 15:38

26

You can see and select which Swift version Xcode is using in:

Target -> Build Settings -> Swift Language Version:

This is available in Xcode 8.3 and Xcode 9 (haven't checked older versions)

answered Jun 09 '17 at 15:38

joern

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`Swift Language Version` doesn't come up as a setting in my Xcode 8.2.1 project. It does have `Use Legacy Swift Language Version`. – Chris Prince Jun 14 '17 at 15:00
1

@ChrisPrince Yes, `Swift Language Version` didn't exist here in `Build Settings` until Xcode 8.3.... in prior Xcode 8.x versions `Use Legacy Swift Language Version`, `No` = Swift 3, and `Yes` = Swift 2.3 – William GP Jul 13 '17 at 23:32
1

I only see the major version not the minor / patch components. e.g. right now I only see "Swift 5" – shim Jan 20 '23 at 19:39

score 24 · Answer 6 · answered Jun 12 '18 at 15:47

To see the default version of swift installed on your machine then from the command line, type the following :

swift --version

Apple Swift version 4.1.2 (swiftlang-902.0.54 clang-902.0.39.2)

Target: x86_64-apple-darwin17.6.0

This is most likely the version that is included in the app store version of Xcode that you have installed (unless you have changed it).

If you want to determine the actual version of Swift being used by a particular version of Xcode (a beta, for instance) then from the command line, invoke the swift binary within the Xcode bundle and pass it the parameter --version

/Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift --version

Apple Swift version 4.2 (swiftlang-1000.0.16.7 clang-1000.10.25.3)

Target: x86_64-apple-darwin17.6.0

score 21 · Answer 7 · edited Jul 26 '22 at 07:23

In case anyone is looking for quick one-to-one mapping of Swift version based on Xcode Version:

Xcode 13.4.1 :      Swift version 5.6.1

Xcode 13.2   :      Swift version 5.5.2

Xcode 12.5   :      Swift version 5.4.2

Xcode 12.3   :      Swift version 5.3.2

Xcode 12.2   :      Swift version 5.3.1

Xcode 11.6   :      Swift version 5.2.4

Xcode 11.5   :      Swift version 5.2.4

Xcode 11.4   :      Swift version 5.2

Xcode 11.3   :      Swift version 5.1.3

Xcode 11.2.1 :      Swift version 5.1.2

Xcode 11.1   :      Swift version 5.1

Obtained with running following command as mentioned on different Xcode versions:

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift --version

score 19 · Answer 8 · answered Oct 14 '16 at 02:38

19

This reddit post helped me: https://www.reddit.com/r/swift/comments/4o8atc/xcode_8_which_swift/d4anpet

Xcode 8 uses Swift 3.0 as default. But you can turn on Swift 2.3. Go to project's Build Settings and set 'Use Legacy Swift Language Version' to YES.

Good old reddit :)

answered Oct 14 '16 at 02:38

alexisSchreier

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I can't find this by search 'Use Legacy Swift Language Version' or 'Legacy' – JerryZhou Jun 08 '17 at 07:37
I'm using latest Xcode Version 8.3.2 (8E2002) and swift 3 there in Swift Language Version. Now I want to change this to swift 2.3 but there is only one option swift 3.0 and 2nd is unspecified. so would you please guide how this would be possible ? to get swift 2.3 in my current project? @alexisSchreier – Arsal Jun 19 '17 at 19:47

score 10 · Answer 9 · answered Apr 18 '19 at 03:57

10

/usr/bin/swiftc --version

and swift version <--> Xcode version

answered Apr 18 '19 at 03:57

Jimmy KD

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score 6 · Answer 10 · edited Jul 26 '22 at 07:23

Either you can run a command on terminal

xcrun swift -version

or

You can refer below table to check which Xcode is using which version of swift language.

Xcode 13.4.1 :      Swift version 5.6.1

Xcode 13.3   :      Swift version 5.6

Xcode 13.2   :      Swift version 5.5.2

Xcode 12.5   :      Swift version 5.4.2

Xcode 12.3   :      Swift version 5.3.2

Xcode 12.2   :      Swift version 5.3.1

Xcode 11.6   :      Swift version 5.2.4

Xcode 11.5   :      Swift version 5.2.4

Xcode 11.4   :      Swift version 5.2

Xcode 11.3   :      Swift version 5.1.3

Xcode 11.2.1 :      Swift version 5.1.2

Xcode 11.1   :      Swift version 5.1

score 3 · Answer 11 · answered Mar 14 '19 at 06:21

3

I am using Swift from Google Colab. Here's how to check it in Colab.

!/swift/toolchain/usr/bin/swift --version

The result is 5.0-dev

answered Mar 14 '19 at 06:21

korakot

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score 3 · Answer 12 · answered Dec 21 '20 at 14:23

3

hi frind code type in terminal swift -v

print teminal Welcome to Apple Swift version 5.2.4 (swiftlang-1103.0.32.9 clang-1103.0.32.53).

answered Dec 21 '20 at 14:23

developerjavad

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score 2 · Answer 13 · answered Jan 08 '21 at 10:06

2

if you want to check the run code for a particular version of swift you can use

#if compiler(>=5.1) //4.2, 3.0, 2.0 replace whatever swft version you wants to check
#endif

answered Jan 08 '21 at 10:06

Navdeep Paliwal

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score 1 · Answer 14 · answered Sep 20 '20 at 03:38

Updated answer for how to find which version of Swift your project is using in a few click in Xcode 12 to help out rookies like me.

Click on your Project (top level Blue Icon in the left hand pane)
Click on Build Settings (5th item in the Project > Header)
Scroll down to Swift Compiler - Language, and look at the dropdown.

score 0 · Answer 15 · answered Jul 18 '23 at 07:17

I was able to find the version of the swift from the termianl by the following command:

swift -version. You can also type swift --help to see more commands you can use with swift langauage on the terminal.

Another way to find and make sure that XCode is indeed using that same version of swift is to go to the project's build setting and check the Swift Langauge version under the Swift Compiler - Language section. Refer screenshot below:

SuperNova · Answer 16 · 2022-11-20T13:55:41.280

-1

By just entering swift command in the terminal, it will show the version, while logging to Swift console.(something like below)

System-IOSs-MacBook-Air swift
Welcome to Apple Swift version 5.1 (swiftlang-1100.0.270.13 clang-1100.0.33.7).
Type :help for assistance.

edited Nov 20 '22 at 13:55

answered Sep 27 '19 at 12:34

SuperNova

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score -3 · Answer 17 · answered Feb 09 '19 at 05:19

Bonus contribution: I'm using a custom node.js script to extract a clean string for use with Jazzy documentation. You might get some use of this if you can find a place to work it into your dev process:

Invoked from a Bash script:

#!/bin/bash
swiftversion=$(node SwiftVerSlicer.js "${xcrun swift -version}");
echo $swiftversion

SwiftVerSlicer.js:

// begin script
const inputString = `${process.argv[2]}`
let searchTerm = (inputString.indexOf('(') - 1)//-1 cause whitespace
let version = inputString.slice(0,searchTerm)
console.log(version)
// end script

You can also use regex of course, but do whatever you like :]

viral goti · Answer 18 · 2019-11-12T09:22:50.607

-4

Select your project
Build Setting
search for "swift language"
now you can see which swift version you are using in your project

https://i.stack.imgur.com/Ojn3m.png

edited Nov 12 '19 at 09:22

answered Nov 12 '19 at 09:13

viral goti

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How is that different from the first solution given in https://stackoverflow.com/a/46080904/1187415? – Martin R Nov 12 '19 at 10:51
well i am going throw main project directory and when you type "swift language" it is only show swift version on top in Build Settings nothing other than that.. – viral goti Nov 12 '19 at 11:10

How do I see which version of Swift I'm using?

18 Answers18

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