diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index a862267769..43f76e9211 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -2527,8 +2527,34 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
-
-
+ N
+
+ NATIVELSBSTRING
+
+
+ A string identifying the host distribution.
+ Strings consist of the host distributor ID
+ followed by the release, as reported by the
+ lsb_release tool
+ or as read from /etc/lsb-release.
+ For example, when running a build on Ubuntu 12.10, the value
+ is "Ubuntu-12.10".
+ If this information is unable to be determined, the value
+ resolves to "Unknown".
+
+
+ This variable is used by default to isolate native shared
+ state packages for different distributions (e.g. to avoid
+ problems with glibc version
+ incompatibilities).
+ Additionally, the variable is checked against
+ SANITY_TESTED_DISTROS
+ if that variable is set.
+
+
+
+
+ O
@@ -3165,6 +3191,27 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
+ SANITY_TESTED_DISTROS
+
+
+ A list of the host distribution identifiers that the
+ build system has been tested against.
+ Identifiers consist of the host distributor ID
+ followed by the release,
+ as reported by the lsb_release tool
+ or as read from /etc/lsb-release.)
+ Separate the list items with explicit newline
+ characters (\n).
+ If SANITY_TESTED_DISTROS is not empty
+ and the current value of
+ NATIVELSBSTRING
+ does not appear in the list, then the build system reports
+ a warning that indicates the current host distribution has
+ not been tested as a build host.
+
+
+
+
SDKIMAGE_FEATURESEquivalent to