Earlier versions of Xcode not working

Question

Created Jul ’21

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I need Xcode 10 to update some swift 3 code. But it fails to open . Never had this problem before. I have a MacBook Pro, BigSur 11.4. Any ideas about this problem? Anyone? Thanks

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Answer 1

Claude31 OP

Jul ’21

You should be able to do this directly in more recent Xcode.

Open project. You get this alert:

Unsupported version.png

Type OK and open Issues Navigator.
Find the warning for project Settings:
Click on each alert and validate changes when requested.

Adjust Settings.png

You should then get a compilation error, with Swift version undefined:

Need Swift Version.png

Open Project settings and search for Swift

Set Swift version.png

There, in Swift Language Version, select Swift 5.

Now project should compile (in fact you will get a lot of API errors because of changes since Xcode 8), but project can now be handled in the recent Xcode.

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Answer 2

rocasoftware OP

Jul ’22

a tip to make this easier: switch it to SWIFT 4 and THEN convert it to 5... gives fewer errors.

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