ci: Make ccache hashing content of compiler binary #27077

1. 
   hebasto commented at 5:17 pm on February 10, 2023: member

   By default, ccache includes the modification time (mtime) and size of the compiler in the hash to ensure that results retrieved from the cache are accurate. But in CI environment compiler’s mtime can be unique each run.

   Effectively, this PR fixes #27063 (comment):

   Looks like ccache isn’t working here

   https://cirrus-ci.com/task/4571293245243392?logs=ci#L4178

2. ci: Make `ccache` hashing content of compiler binary

   By default, `ccache` includes the modification time (`mtime`) and size
   of the compiler in the hash to ensure that results retrieved from the
   cache are accurate. But in CI environment compiler's `mtime` can be
   unique each run.

   d56dbd1950
3. 
   DrahtBot commented at 5:17 pm on February 10, 2023: member

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4. DrahtBot added the label Tests on Feb 10, 2023
5. hebasto marked this as a draft on Feb 11, 2023
6. hebasto marked this as ready for review on Feb 11, 2023
7. hebasto marked this as a draft on Feb 11, 2023
8. [DO NOT MERGE] ci: Invalidate `ccache` cache 6de4b7f145
9. hebasto closed this on Feb 11, 2023

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10. fanquake locked this on Feb 19, 2023

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