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bitbake: bitbake-user-manual/ref-variables: extend PERSISTENT_DIR doc

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Extend the current documentation of PERSISTENT_DIR:

- Mention that it also contains the hash equivalence database when
  BB_HASHSERVE = auto.
- Mention that it should not be shared between builds.

[YOCTO #15727]

(Bitbake rev: 682c2dccb67a57ecbf93aac8e9deea88bff10155)

Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Antonin Godard 2025-09-15 14:28:03 +02:00 committed by Richard Purdie
parent 993393b4d9
commit c0e2fa79c7
1 changed files with 7 additions and 2 deletions
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bitbake/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst
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@ -1329,8 +1329,13 @@ overview of their function and contents.
:term:`PERSISTENT_DIR`
Specifies the directory BitBake uses to store data that should be
preserved between builds. In particular, the data stored is the data
that uses BitBake's persistent data API and the data used by the PR
Server and PR Service.
that uses BitBake's persistent data API, the data used by the PR
Server and PR Service, and the default location of the Hash Equivalence
database (when :term:`BB_HASHSERVE` is set to ``auto``).
This directory should not be shared between different builds. If you need
to share the Hash Equivalence database, you should setup a Hash
Equivalence server instead.
:term:`PF`
Specifies the recipe or package name and includes all version and