ref-manual: New section clarifying stamps, input checksums and sstate cache

Fixes [YOCTO #10172]

I added a new section on how BitBake reruns tasks based on the
stamps files.  Also put in some cross-referencing links to that
new section in the stamps entry for the structure chapter and in
the STAMP variable in the glossary.

(From yocto-docs rev: da8779d9eb85473cd6b0f74e9e1371e1d277890f)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index 2a48315be7..1f4b2171a9 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -12620,6 +12620,13 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
                 </para>
 
                 <para>
+                    For information on how BitBake uses stamp files to determine
+                    if a task should be rerun, see the
+                    "<link linkend='stamp-files-and-the-rerunning-of-tasks'>Stamp Files and the Rerunning of Tasks</link>"
+                    section.
+                </para>
+
+                <para>
                     See <link linkend='var-STAMPS_DIR'><filename>STAMPS_DIR</filename></link>,
                     <link linkend='var-MULTIMACH_TARGET_SYS'><filename>MULTIMACH_TARGET_SYS</filename></link>,
                     <link linkend='var-PN'><filename>PN</filename></link>,