[Bug 246245] Mk/bsd.ccache.mk: Increase ccache hit ratio

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 13 Jul 2021 13:26:16 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246245

--- Comment #10 from Ivan Rozhuk <rozhuk.im@gmail.com> ---
(In reply to Bryan Drewery from comment #9)

https://github.com/ccache/ccache/issues/751

Then you build port version 1.2.3 it builds some where, and if this is out of
source build than 1.2.3 go to the ccache metainfo as part of path to sources.
In next time then you will build version 1.2.4 ccache will cache miss because
in meta stored 1.2.3 path to sources.

This issue affects cmake ports with outofsource build and may be some other
ports.

Current version of patch may improve cache hit ratio for insource build ports.

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