Unreal Engine 5.3 compilation

Hello,

I'm working with Mac Book Pro M3 Sonoma 14.4.1 and I have an issue with compilation, sometimes after compilation of the project the symlink files inside Xcode.app are updated, and further compilation will do full recompilation. According to the build log, the issue is pthread.h :

Module.NiagaraEditor.9.cpp: Dependency /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/pthread.h is newer than the last execution of the action: 04/23/2024 14:33:55 vs 04/23/2024 00:20:32

I tried to trace the reason for the symlink update with the fs_usage utility like this: sudo fs_usage -w | grep pthread.h and according to the output the only things that coincide with the file modification time:

13:55:37.157163  lstat64                [  2]           -B918-ED122786C40E.activeSandbox/Root//Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/pthread/pthread.h    0.000034   installd.1747894
13:55:37.159691  link                                   ED122786C40E.activeSandbox/Root//Applications/Xcode.app/Contents/Developer/Platforms/AppleTVOS.platform/Developer/SDKs/AppleTVOS.sdk/usr/include/pthread/pthread.h    0.000753   installd.1747894
13:55:37.176355  fsgetpath                              -ED122786C40E.activeSandbox/Root/Applications/Xcode.app/Contents/Developer/Platforms/AppleTVOS.platform/Developer/SDKs/AppleTVOS.sdk/usr/include/pthread/pthread.h    0.000039   mds.1764823
13:55:37.176612  fsgetpath                              activeSandbox/Root/Applications/Xcode.app/Contents/Developer/Platforms/AppleTVSimulator.platform/Developer/SDKs/AppleTVSimulator.sdk/usr/include/pthread/pthread.h    0.000026   mds.1764823
13:55:37.176641  fsgetpath                              18-ED122786C40E.activeSandbox/Root/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/pthread/pthread.h    0.000016   mds.1764823
13:55:37.176666  fsgetpath                              E.activeSandbox/Root/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/include/pthread/pthread.h    0.000014   mds.1764823
13:55:37.176689  fsgetpath                              8-B918-ED122786C40E.activeSandbox/Root/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/pthread/pthread.h    0.000014   mds.1764823
13:55:37.186224  lstat64                [  2]           A13-4108-B918-ED122786C40E.activeSandbox/Root//Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/pthread.h    0.000022   installd.1747894
13:55:37.186717  unlink                 [  2]           A13-4108-B918-ED122786C40E.activeSandbox/Root//Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/pthread.h    0.000010   installd.1747894

There are link and unlink caused by installd process, which makes me think that it could be related to the system software update, but disabling it did not help.

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Yeah, that’s a weird one.

Did you install Xcode from the Mac App Store? Or install it manually?

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eskimo
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Hello,

Thank you for the response.

I managed to find the source of the problem by exploring the log file of the installd daemon, so the problem was the organization's MDM tool that for some reason does reinstallation of the XCode, after excluding XCode from the preinstalled software the problem is gone.

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HyPNOTIQ
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  • Oh, interesting. Thanks for closing the loop.

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    eskimo
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