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Posted to issues@arrow.apache.org by "pitrou (via GitHub)" <gi...@apache.org> on 2023/05/15 17:38:29 UTC

[GitHub] [arrow] pitrou opened a new issue, #35596: [C++] PCG breaks compilation caching

pitrou opened a new issue, #35596:
URL: https://github.com/apache/arrow/issues/35596

   ### Describe the bug, including details regarding any error messages, version, and platform.
   
   Noticing that I sometimes got unexpected slow rebuilds, I tried to dive a bit into ccache debug output and found out that by default the PCG headers use the `__DATE__` and `__TIME__` macros, which makes builds non-deterministic:
   https://github.com/imneme/pcg-cpp/issues/59
   
   We should perhaps simply remove PCG's `struct static_arbitrary_seed`, which would make compilation caching more efficient. @benibus @bkietz @assignUser 
   
   ### Component(s)
   
   C++


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[GitHub] [arrow] assignUser commented on issue #35596: [C++] PCG breaks compilation caching

Posted by "assignUser (via GitHub)" <gi...@apache.org>.

assignUser commented on issue #35596:
URL: https://github.com/apache/arrow/issues/35596#issuecomment-1548884575

   Interesting, I also have #34715 open which could be a big improvement for our caching situation.


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[GitHub] [arrow] pitrou closed issue #35596: [C++] PCG breaks compilation caching

Posted by "pitrou (via GitHub)" <gi...@apache.org>.

pitrou closed issue #35596: [C++] PCG breaks compilation caching
URL: https://github.com/apache/arrow/issues/35596


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