ref-manual: document cargo_c class

(From yocto-docs rev: 74fc6a70d4636b37fe4eab290ea974e0f1531dbf)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
CC: Frederic Martinsons <frederic.martinsons@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/documentation/ref-manual/classes.rst b/documentation/ref-manual/classes.rst
index f1d545f310..3070f13551 100644
--- a/documentation/ref-manual/classes.rst
+++ b/documentation/ref-manual/classes.rst
@@ -281,6 +281,19 @@ tool.
 
 This class inherits the :ref:`ref-classes-cargo_common` class.
 
+.. _ref-classes-cargo_c:
+
+``cargo_c``
+===========
+
+The :ref:`ref-classes-cargo_c` class can be inherited by a recipe to generate
+a Rust library that can be called by C/C++ code. The recipe which inherits this
+class has to only replace ``inherit cargo`` by ``inherit cargo_c``.
+
+See the :yocto_git:`rust-c-lib-example_git.bb
+</poky/tree/meta-selftest/recipes-devtools/rust/rust-c-lib-example_git.bb>`
+example recipe.
+
 .. _ref-classes-cargo_common:
 
 ``cargo_common``