ref-manual/variables.rst: document WIC_CREATE_EXTRA_ARGS

Fixes [YOCTO #15509]

Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
(From yocto-docs rev: 8e893cc8cabba4b4f21556561d1ca9656ca1ff9f)

Signed-off-by: Trevor Woerner <twoerner@gmail.com>
Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
(cherry picked from commit f1cdecb6da91dbfac59359c83038cb4a4c36ad0a)
Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/documentation/ref-manual/variables.rst b/documentation/ref-manual/variables.rst
index 51c8a856c0..83fda05fc6 100644
--- a/documentation/ref-manual/variables.rst
+++ b/documentation/ref-manual/variables.rst
@@ -9579,6 +9579,20 @@ system and gives an overview of their function and contents.
       can control with this variable, see the
       ":ref:`ref-classes-insane`" section.
 
+   :term:`WIC_CREATE_EXTRA_ARGS`
+      If the :term:`IMAGE_FSTYPES` variable contains "wic", the build
+      will generate a
+      :ref:`Wic image <dev-manual/wic:creating partitioned images using wic>`
+      automatically when BitBake builds an image recipe. As part of
+      this process BitBake will invoke the "`wic create`" command. The
+      :term:`WIC_CREATE_EXTRA_ARGS` variable is placed at the end of this
+      command which allows the user to supply additional arguments.
+
+      One such useful purpose for this mechanism is to add the ``-D`` (or
+      ``--debug``) argument to the "`wic create`" command. This increases the
+      amount of debugging information written out to the Wic log during the
+      Wic creation process.
+
    :term:`WKS_FILE`
       Specifies the location of the Wic kickstart file that is used by the
       OpenEmbedded build system to create a partitioned image