dev-manual, kernel-manual: Added links to THISDIR variable

There is now a glossary description for the THISDIR variable
in ref-manual.  I added some cross-reference links to the
variable in key places of these two manuals.

(From yocto-docs rev: 0d0f756c142c506a66ebc6a1a33e9f124dafd333)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 4 insertions, 3 deletions

diff --git a/documentation/kernel-dev/kernel-dev-advanced.xml b/documentation/kernel-dev/kernel-dev-advanced.xml
index 2626f691dc..d15e26ffbf 100644
--- a/documentation/kernel-dev/kernel-dev-advanced.xml
+++ b/documentation/kernel-dev/kernel-dev-advanced.xml
@@ -203,7 +203,7 @@
             <filename>oe-core/meta-skeleton/recipes-kernel/linux/linux-yocto-custom.bb</filename>
             to a recipe in your layer, <filename>FILESEXTRAPATHS</filename>
             is typically set to
-            <filename>${THISDIR}/${</filename><ulink url='&YOCTO_DOCS_REF_URL;#var-PN'><filename>PN</filename></ulink><filename>}</filename>.
+            <filename>${</filename><ulink url='&YOCTO_DOCS_REF_URL;#var-THISDIR'><filename>THISDIR</filename></ulink><filename>}/${</filename><ulink url='&YOCTO_DOCS_REF_URL;#var-PN'><filename>PN</filename></ulink><filename>}</filename>.
             See the "<link linkend='modifying-an-existing-recipe'>Modifying an Existing Recipe</link>"
             section for more information.
         </para>
diff --git a/documentation/kernel-dev/kernel-dev-common.xml b/documentation/kernel-dev/kernel-dev-common.xml
index e18eb31923..11a527ce24 100644
--- a/documentation/kernel-dev/kernel-dev-common.xml
+++ b/documentation/kernel-dev/kernel-dev-common.xml
@@ -97,8 +97,9 @@
                 <literallayout class='monospaced'>
      FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}"
                 </literallayout>
-                The path <filename>${THISDIR}/${</filename><ulink url='&YOCTO_DOCS_REF_URL;#var-PN'><filename>PN</filename></ulink><filename>}</filename> expands
-                to "linux-yocto" in the current directory for this example.
+                The path <filename>${</filename><ulink url='&YOCTO_DOCS_REF_URL;#var-THISDIR'><filename>THISDIR</filename></ulink><filename>}/${</filename><ulink url='&YOCTO_DOCS_REF_URL;#var-PN'><filename>PN</filename></ulink><filename>}</filename>
+                expands to "linux-yocto" in the current directory for this
+                example.
                 If you add any new files that modify the kernel recipe and you
                 have extended <filename>FILESPATH</filename> as
                 described above, you must place the files in your layer in the