variables.rst: add a reference to BB_CURRENT_MC from bbdocs

BB_CURRENT_MC is documented in the Bitbake user manual. Add a reference
to it here.

Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
(From yocto-docs rev: a9aaef86bf76027f602546b5d4a3dffc6168d9b4)

Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/documentation/ref-manual/variables.rst b/documentation/ref-manual/variables.rst
index a57c09877a..60984cc8f3 100644
--- a/documentation/ref-manual/variables.rst
+++ b/documentation/ref-manual/variables.rst
@@ -390,6 +390,9 @@ system and gives an overview of their function and contents.
    :term:`BB_CURRENTTASK`
       See :term:`bitbake:BB_CURRENTTASK` in the BitBake manual.
 
+   :term:`BB_CURRENT_MC`
+      See :term:`bitbake:BB_CURRENT_MC` in the BitBake manual.
+
    :term:`BB_DEFAULT_TASK`
       See :term:`bitbake:BB_DEFAULT_TASK` in the BitBake manual.