dev-manual, ref-manual: Additions for making an image more secure.

Fixes [YOCTO #3686]

In the dev-manual, I created a new section called
"Making Images More Secure."  The section explains in general
how to enable the security flags.

In the ref-manual, I updated the CFLAGS variable to point to the
new section.

(From yocto-docs rev: 3ed91a46eaf5c1fdf84369ea69951775d87a42da)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.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 7539136734..22d7f13a0a 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -1118,6 +1118,13 @@
                     This variable evaluates to the same as
                     <filename><link linkend='var-TARGET_CFLAGS'>TARGET_CFLAGS</link></filename>.
                 </para>
+
+                <para>
+                    For information on flags that help with creating more
+                    secure code, see the
+                    "<ulink url='&YOCTO_DOCS_DEV_URL;#making-images-more-secure'>Making Images More Secure</ulink>"
+                    section in the Yocto Project Development Manual.
+                </para>
             </glossdef>
         </glossentry>