From 91d3e60a48d2269adfd0084eb6f1bcdb211dbce1 Mon Sep 17 00:00:00 2001
From: Richard Purdie <richard.purdie@linuxfoundation.org>
Date: Sun, 9 Mar 2014 18:47:30 -0700
Subject: [PATCH] user-manual-metadata.xml: Add details about environment
 variables used by BitBake

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
 doc/user-manual/user-manual-metadata.xml | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/doc/user-manual/user-manual-metadata.xml b/doc/user-manual/user-manual-metadata.xml
index 621b376d375..a67d6b1b1ae 100644
--- a/doc/user-manual/user-manual-metadata.xml
+++ b/doc/user-manual/user-manual-metadata.xml
@@ -957,6 +957,19 @@
         <section id='parsing-configuration-files'>
             <title>Configuration files</title>
 
+            <para>
+                Prior to parsing configuration files, Bitbake looks
+                at certain variables, including:
+                <itemizedlist>
+                    <listitem><para><filename>BB-ENV-WHITELIST</filename></para></listitem>
+                    <listitem><para><filename>BB_PRESERVE-ENV</filename></para></listitem>
+                    <listitem><para><filename>BB_ENV_EXTRAWHITE</filename></para></listitem>
+                    <listitem><para><filename>BB_ORIG_ENV</filename></para></listitem>
+                    <listitem><para><filename>PREFERRED_VERSIONS</filename></para></listitem>
+                    <listitem><para><filename>PREFERRED_PROVIDERS</filename></para></listitem>
+                </itemizedlist>
+            </para>
+
             <para>
                 The first kind of metadata in BitBake is configuration metadata.
                 This metadata is global, and therefore affects all packages and
-- 
2.47.3