Resolved IL2CPP build failure in CI - error=86, "Bad CPU type in executable"

Hi all, thanks for taking a look.

I'm attempting to build a project in a Bitrise CI workflow. Our setup is a little complex - we are embedding the Unity project within a React Native app.

I'm able to build the project locally on my Apple silicon processor. However, when Gradle in the CI workflow gets to the IL2CPP build step, it fails with the error in the title:

Caused by: java.io.IOException: Cannot run program "/Users/vagrant/git/unity/builds/android/unityLibrary/src/main/Il2CppOutputProject/IL2CPP/build/deploy/il2cpp" (in directory "/Users/vagrant/git/unity/builds/android/unityLibrary"): error=86, Bad CPU type in executable

(full stack trace at the end).

The CI is using a VM based on a Mac Intel chip (Intel Xeon 3.2Ghz, I'm pretty sure, although I can't find it at the moment). I assume that's what's causing the error. However, I'm not seeing a lot of issues with IL2CPP on Mac Intel chips.

Could this be because I've exported the Android project on an M1 chip and the CI is running on a different architecture? If so, is there any option to build for x86 on my M1?

Code (CSharp):

1. Execution failed for task ':unityLibrary:BuildIl2CppTask'.
2. > A problem occurred starting process 'command '/Users/vagrant/git/unity/builds/android/unityLibrary/src/main/Il2CppOutputProject/IL2CPP/build/deploy/il2cpp''
3. * Try:
4. > Run with --info or --debug option to get more log output.
5. > Run with --scan to get full insights.
6. * Exception is:
7. org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':unityLibrary:BuildIl2CppTask'.
8.     at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.lambda$executeIfValid$1(ExecuteActionsTaskExecuter.java:145)
9.     at org.gradle.internal.Try$Failure.ifSuccessfulOrElse(Try.java:282)
10.     at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:143)
11.     at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:131)
12.     at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:77)
13.     at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)
14.     at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:51)
15.     at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)
16.     at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:56)
17.     at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:36)
18.     at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.executeTask(EventFiringTaskExecuter.java:77)
19.     at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:55)
20.     at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.call(EventFiringTaskExecuter.java:52)
21.     at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)
22.     at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)
23.     at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
24.     at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
25.     at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
26.     at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
27.     at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)
28.     at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)
29.     at org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:52)
30.     at org.gradle.execution.plan.LocalTaskNodeExecutor.execute(LocalTaskNodeExecutor.java:74)
31.     at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:402)
32.     at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$InvokeNodeExecutorsAction.execute(DefaultTaskExecutionGraph.java:389)
33.     at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:382)
34.     at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareExecutionAction.execute(DefaultTaskExecutionGraph.java:368)
35.     at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.lambda$run$0(DefaultPlanExecutor.java:127)
36.     at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.execute(DefaultPlanExecutor.java:191)
37.     at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.executeNextNode(DefaultPlanExecutor.java:182)
38.     at org.gradle.execution.plan.DefaultPlanExecutor$ExecutorWorker.run(DefaultPlanExecutor.java:124)
39.     at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
40.     at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
41.     at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:61)
42. Caused by: org.gradle.process.internal.ExecException: A problem occurred starting process 'command '/Users/vagrant/git/unity/builds/android/unityLibrary/src/main/Il2CppOutputProject/IL2CPP/build/deploy/il2cpp''
43.     at org.gradle.process.internal.DefaultExecHandle.execExceptionFor(DefaultExecHandle.java:241)
44.     at org.gradle.process.internal.DefaultExecHandle.setEndStateInfo(DefaultExecHandle.java:218)
45.     at org.gradle.process.internal.DefaultExecHandle.failed(DefaultExecHandle.java:369)
46.     at org.gradle.process.internal.ExecHandleRunner.run(ExecHandleRunner.java:87)
47.     at org.gradle.internal.operations.CurrentBuildOperationPreservingRunnable.run(CurrentBuildOperationPreservingRunnable.java:42)
48.     at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
49.     at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
50.     at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:61)
51. Caused by: net.rubygrapefruit.platform.NativeException: Could not start '/Users/vagrant/git/unity/builds/android/unityLibrary/src/main/Il2CppOutputProject/IL2CPP/build/deploy/il2cpp'
52.     at net.rubygrapefruit.platform.internal.DefaultProcessLauncher.start(DefaultProcessLauncher.java:27)
53.     at net.rubygrapefruit.platform.internal.WrapperProcessLauncher.start(WrapperProcessLauncher.java:36)
54.     at org.gradle.process.internal.ExecHandleRunner.startProcess(ExecHandleRunner.java:98)
55.     at org.gradle.process.internal.ExecHandleRunner.run(ExecHandleRunner.java:71)
56.     ... 4 more
57. Caused by: java.io.IOException: Cannot run program "/Users/vagrant/git/unity/builds/android/unityLibrary/src/main/Il2CppOutputProject/IL2CPP/build/deploy/il2cpp" (in directory "/Users/vagrant/git/unity/builds/android/unityLibrary"): error=86, Bad CPU type in executable
58.     at net.rubygrapefruit.platform.internal.DefaultProcessLauncher.start(DefaultProcessLauncher.java:25)
59.     ... 7 more
60. Caused by: java.io.IOException: error=86, Bad CPU type in executable
61.     ... 8 more

 

Hi, thanks so much for your reply. Can you provide any more information about replacing il2cpp with its 64 bit variant? I didn't have much luck looking for a setting or a way to do this just now. The closest thing I could think of was disabling ARMv7 in the Player configuration (so it's just ARM64 selected), but a build configured like that has just failed my pipeline.

I hadn't thought of building in CI - thanks. If I can't get anything easier to work I will do that.

I pasted my Player configuration below. Let me know if I can provide any more information!

 

Building the Unity app on my Intel machine resolved the issue in the pipeline. I'm going to look into using Silicon machines in the pipeline before attempting to do the Unity build in the cloud.

 

Confirmed that matching the architecture works for Silicon as well.