bitbake-user-manual: Added review changes to BBCLASSEXTEND description

Fixes [YOCTO #9909]

Added some technical clarifications to the existing note to be clear
about what is causing the limitations in this case.  Applied some
formatting fixed to for the use of the include word.

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>

diff --git a/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml b/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml
index e81f3ed6534abb09363ddb6e946b7093564a98ee..4d8ee69b6dfcd3697012009079d4b4f7622e0864 100644 (file)
--- a/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml
+++ b/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.xml
@@ -992,19 +992,21 @@
                         mechanism generates recipe variants by rewriting
                         variable values and applying overrides such as
                         <filename>_class-native</filename>.
-                        For example, to generate a native version of a recipe
-                        named "foo", a
+                        For example, to generate a native version of a recipe,
+                        a
                         <link linkend='var-DEPENDS'><filename>DEPENDS</filename></link>
                         on "foo" is rewritten to a <filename>DEPENDS</filename>
                         on "foo-native".
                         </para>
 
                         <para>
-                        No reparsing, which adds some limitations, of the
-                        recipe is done for each variant.
-                        For example, it is not possible to "include" a
-                        different file depending on the variant, since
-                        "include's" are processed when the recipe is parsed.
+                        Even when using <filename>BBCLASSEXTEND</filename>, the
+                        recipe is only parsed once.
+                        Parsing once adds some limitations.
+                        For example, it is not possible to
+                        include a different file depending on the variant,
+                        since <filename>include</filename> statements are
+                        processed when the recipe is parsed.
                         </para>
                     </note>
                 </para>