sphinx: add links for Yocto project website

In DocBook, variables are used to create custom links (note that it is
not consistent everywhere, since some web addresses are still
hardcoded), such as YOCTO_HOME_URL, YOCTO_GIT_URL, YOCTO_WIKI_URL,
YOCTO_BUGS_URL and YOCTO_DL_URL..

In Sphinx they are replaced with extlinks.

(From yocto-docs rev: d25f3095a9d29a3355581d0743f27b2a423ad580)

Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/documentation/ref-manual/ref-system-requirements.rst b/documentation/ref-manual/ref-system-requirements.rst
index 3144d303f8..a9a937b661 100644
--- a/documentation/ref-manual/ref-system-requirements.rst
+++ b/documentation/ref-manual/ref-system-requirements.rst
@@ -13,8 +13,8 @@ Rather, use this manual to find variable definitions, class
 descriptions, and so forth as needed during the course of using the
 Yocto Project.
 
-For introductory information on the Yocto Project, see the `Yocto
-Project Website <&YOCTO_HOME_URL;>`__ and the "`Yocto Project
+For introductory information on the Yocto Project, see the
+:yocto_home:`Yocto Project Website <>` and the "`Yocto Project
 Development
 Environment <&YOCTO_DOCS_OM_URL;#overview-development-environment>`__"
 chapter in the Yocto Project Overview and Concepts Manual.
@@ -68,8 +68,8 @@ distributions:
    -  If you encounter problems, please go to `Yocto Project
       Bugzilla <&YOCTO_BUGZILLA_URL;>`__ and submit a bug. We are
       interested in hearing about your experience. For information on
-      how to submit a bug, see the Yocto Project `Bugzilla wiki
-      page <&YOCTO_WIKI_URL;/wiki/Bugzilla_Configuration_and_Bug_Tracking>`__
+      how to submit a bug, see the Yocto Project
+      :yocto_wiki:`Bugzilla wiki page </wiki/Bugzilla_Configuration_and_Bug_Tracking>`
       and the "`Submitting a Defect Against the Yocto
       Project <&YOCTO_DOCS_DEV_URL;#submitting-a-defect-against-the-yocto-project>`__"
       section in the Yocto Project Development Tasks Manual.
@@ -255,7 +255,7 @@ installer and automatically installs the tools for you:
 
 1. Execute the ``install-buildtools`` script. Here is an example: $ cd
    poky $ scripts/install-buildtools --without-extended-buildtools \\
-   --base-url YOCTO_DL_URL/releases/yocto \\ --release yocto-DISTRO \\
+   --base-url https://downloads.yoctoproject.org/releases/yocto \\ --release yocto-DISTRO \\
    --installer-version DISTRO
 
    During execution, the buildtools tarball will be downloaded, the