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compilation: Make USE_CCACHE=no the default #7729

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compilation: Make USE_CCACHE=no the default #7729

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  • and warn if you try to enable it
  • make var readonly after it is read, to avoid extensions getting creative
  • why?
    • ccache has 0 cache hit ratio during any kernel version change (version.h)
    • but causes every build to be slower to gather/compare cache
    • armbian/build already tries hard to keep your (worktree) cache make-hot during rebuilds/repatching/reconfigs

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compilation: Make USE_CCACHE=no the default
f383bdf 
- and warn if you try to enable it
- make var readonly after it is read, to avoid extensions getting creative
- why?
  - ccache has 0 cache hit ratio during _any_ kernel version change (version.h)
  - but causes every build to be slower to gather/compare cache
  - armbian/build already tries hard to keep your (worktree) cache make-hot during rebuilds/repatching/reconfigs
@github-actions github-actions bot added size/small PR with less then 50 lines Needs review Seeking for review Framework Framework components labels Jan 21, 2025
@rpardini rpardini marked this pull request as ready for review January 21, 2025 00:10
@rpardini rpardini requested a review from a team as a code owner January 21, 2025 00:10
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Superseded by #7730

@rpardini rpardini closed this Jan 21, 2025
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