The Swift Language for that is going to need to change to Swift 5. You may have to sign up for a free Apple Developer Account in order to download Xcode 10 from the developer link that BDAqua provided unless Apple has relaxed its access privileges for these tools. You're gong to have to do the same thing to Audio Mixer DemoTests because it's also initially set to Unspecified. The result should say Swift Language Version - Unspecified:Ĩ- Just click Unspecified and change it to Swift 5ĩ- In the 8th pic above, on the left side the TARGETS section is on the first target that says Audio Mixer Demo. How to download Regardless of your reason, the good news is that you can download old versions of Xcode (and a lot of other tools) from the Apple Developer Center. It's the blue triangle iconģ- Find the yellow triangle warning for project, click each one, then when the alert appears validate changes when requested.Ĥ- You should then get a compilation error, with Swift version undefined:ĥ- In the Project Navigator (left pane), select the blue project icon:Ħ- Select Build Settings and make sure that underneath of it, it's set to All and Combinedħ- In the right search bar enter Swift Language. How to Install Xcode 10.1 in MAC Mac World 40 subscribers Subscribe 2.4K views 4 years ago Hi Friends Today i am going to install Xcode 10. I followed this Apple Forums answer which works fine.ġ- When you open project, you get this alert:Ģ- Select OK and open Issues Navigator (press command button + 5). I just ran into this problem with an old Cocoapod file that is written in Swift 3 but my Xcode supports Swift 5.

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