ref-manual: introduce UNPACKDIR variable

Note that this doesn't touch the "Source Fetching" section
in overview-manual/concepts.rst yet, as the unpack implementation
may not be finalized yet.

(From yocto-docs rev: 2c892663c3e2d72493ee29898e99335a1e45c01f)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Reviewed-by: Andrew Murray <amurray@thegoodpenguin.co.uk>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/documentation/ref-manual/variables.rst b/documentation/ref-manual/variables.rst
index 546c674699..07b5b6f95c 100644
--- a/documentation/ref-manual/variables.rst
+++ b/documentation/ref-manual/variables.rst
@@ -9698,6 +9698,11 @@ system and gives an overview of their function and contents.
       :ref:`ref-classes-insane` class and is only enabled if the
       recipe inherits the :ref:`ref-classes-autotools` class.
 
+   :term:`UNPACKDIR`
+      This variable, used by the :ref:`ref-classes-base` class,
+      specifies where fetches sources should be unpacked by the
+      :ref:`ref-tasks-unpack` task.
+
    :term:`UPDATERCPN`
       For recipes inheriting the
       :ref:`ref-classes-update-rc.d` class, :term:`UPDATERCPN`