Xcode 10 and 32-bit clang

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Created Sep ’18

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I know that 32-bit support is going away in a future version of macOS and Xcode 10 does not support developing 32-bit applications. However I am working on a project which needs a 32-bit executable to bootstrap (for now, hopefully will be fixed soon)

The question is: will upgrading to Xcode 10 also update the command line tools so that they are 64-bit only? Or is it just a change to the GUI / .xcodeproj files?

I couldn't see this info anywhere in the release notes.

Thanks,

Peter

Answered by ATVS in 332591022

I have the same issue but I did find that this has been documented here: https://developer.apple.com/documentation/xcode_release_notes/xcode_10_release_notes?language=objc

By this bit:

The macOS 10.14 SDK no longer contains support for compiling 32-bit applications. If developers need to compile for i386, Xcode 9.4 or earlier is required. (39858111)

Regards Rob.

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Answer 1

ATVS OP

Sep ’18

Accepted Answer

I have the same issue but I did find that this has been documented here: https://developer.apple.com/documentation/xcode_release_notes/xcode_10_release_notes?language=objc

By this bit:

The macOS 10.14 SDK no longer contains support for compiling 32-bit applications. If developers need to compile for i386, Xcode 9.4 or earlier is required. (39858111)

Regards Rob.

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Answer 2

peter_hull OP

Sep ’18

Thanks Rob, I didn't spot that. In the end I tried Xcode 10, found it didn't work, and downloaded the 9.x command line tools. This worked for a while until it updated itself back during the Mojave update (I think.) But anyway I can always go back if I need 32-bit.

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