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Xcode 11 beta 4 error: Command CompileSwiftSources failed with a nonzero exit code

I've downloaded the latest Xcode beta 4. When I build I'm getting the same error with 3 of my pods:

Command CompileSwiftSources failed with a nonzero exit code
<unknown>:0: error: unknown argument: '-w'
<unknown>:0: error: unknown argument: '-Xanalyzer'
<unknown>:0: error: unknown argument: '-analyzer-disable-all-checks'

This is the MarqueeLabel pod logs: enter image description here

I have tried:

  • Cleaning and deep cleaning (shift + alt + cmd + k)
  • Deleting the Derived Data folder
  • Restarting Xcode

I can't see the error listed in the release notes. https://developer.apple.com/documentation/xcode_release_notes/xcode_11_beta_4_release_notes

Does anyone know what the problem is or a workaround?

Solution

  • There is a known issue with Cocoapods and Xcode 11 Beta 4 where inhibit_all_warnings! causes arguments to be set for Swift which do not compile. Removing this inhibit resolves the issue, and Swift warnings can be inhibited with SWIFT_SUPPRESS_WARNINGS = YES on targets instead.