test-manual: Add extra detail to YP Compatible section

Add a note about documenting where a layer doesn't support 'core'
functionality.

(From yocto-docs rev: 0fc15d069aae11e6e705d80f684345150ff7bf3b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Reviewed-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/documentation/test-manual/yocto-project-compatible.rst b/documentation/test-manual/yocto-project-compatible.rst
index a7897469ff..96c12ac083 100644
--- a/documentation/test-manual/yocto-project-compatible.rst
+++ b/documentation/test-manual/yocto-project-compatible.rst
@@ -115,6 +115,11 @@ Here are key best practices the program tries to encourage:
    user changes a configuration setting to activate the layer, by selecting
    a :term:`MACHINE`, a :term:`DISTRO` or a :term:`DISTRO_FEATURES` setting.
 
+-  Layers should be documenting where they don’t support normal "core"
+   functionality such as where debug symbols are disabled or missing, where
+   development headers and on-target library usage may not work or where
+   functionality like the SDK/eSDK would not be expected to work.
+
 The project does test the compatibility status of the core project layers on
 its :doc:`Autobuilder </test-manual/understand-autobuilder>`.