Xcode12.0(12A7209) Error: Compile Swift source files

Question

Created Oct ’20

Replies 9

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Participants 12

Only certain Test Scheme are getting errors in Swift source files.

The error output to the log with the Compile process message is as follows. I hope someone can fix this build error🤧

Compile Swift source files (x86_64)

Code Block terminalCompileSwiftSources normal x86_64 com.apple.xcode.tools.swift.compiler (in target 'HogeApiTests' from project 'Hoge')
...
<unknown>:0: error: unable to execute command: Illegal instruction: 4
<unknown>:0: error: compile command failed due to signal 4 (use -v to see invocation)

Compile HomeSpec.swift (x86_64) ※ Most Swift files get this Error

Code Block terminalCompileSwift normal x86_64 /Users/HogeUser/job/Hoge/HogeApiTests/Entity/HogeSpec.swift (in target 'HogeApiTests' from project 'Hoge')
...
Command CompileSwift failed with a nonzero exit code

Compile Hoge12Spec.swift (x86_64) ※ I get this Error in some Swift files

Code Block terminalCompileSwift normal x86_64 /Users/HogeUser/job/Hoge/HogeApiTests/Entity/Hoge12Spec.swift (in target 'HogeApiTests' from project 'Hoge')
...
error: Illegal instruction: 4 (in target 'HogeApiTests' from project 'Hoge')

Boost

Answer 1

Claude31 OP

Oct ’20

Could it be an optimisation issue ?

Have a look here: https://stackoverflow.com/questions/14268887/what-is-the-illegal-instruction-4-error-and-why-does-mmacosx-version-min-10

0

Answer 2

sylvanash OP

Oct ’20

I'm also getting the same error with Xcode 12.1 when running tests with Quick + Nimble. The compiler seems to have trouble type-checking the tests

0

Answer 3

arise OP

Apr ’21

Did you fix it? Seeing the same error with Xcode 12.5

1

Answer 4

zhaoqt OP

May ’21

Did you fix it? Seeing the same error with Xcode 12.5

1

Answer 5

Manny2725 OP

May ’21

Did you fix it? Seeing the same error with Xcode 12.5

1

Answer 6

G522811 OP

Aug ’21

Also seeing the same in 12.5

1

Answer 7

Computer Lover OP

Sep ’21

Did you fix it? Seeing the same error with Xcode 13

0

Answer 8

vijayseshadri OP

Oct ’21

Did you fix it? Seeing the same error with Xcode 13

0

Answer 9

Salgado OP

Jan ’22

Follow these steps

#1. Clear de DerivedData folder

rm -rf ~/Library/Developer/Xcode/DerivedData

#2. Clean Xcode project

cmd + shift + k

#3. Close Xcode project, maybe even reboot the mac (if you like)

Try again. The first step was the crucial step for me, but step 2 and 3 could help as well.

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