yocto: slide about default_preference

Signed-off-by: Manuel Traut <manut@linutronix.de>

1 files changed, 8 insertions, 7 deletions

diff --git a/distribution/yocto-basic/pres_yocto-basic.tex b/distribution/yocto-basic/pres_yocto-basic.tex
index 1e2e4c4..40f140b 100644
--- a/distribution/yocto-basic/pres_yocto-basic.tex
+++ b/distribution/yocto-basic/pres_yocto-basic.tex
@@ -62,13 +62,14 @@ PREFEREED\_PROVIDER\_virtual/kernel = "linux-yocto"
 
 \begin{frame}
 \frametitle{Preferences}
-\begin{verbatim}
---8<- -my-kernel\_3.16.bb --
-PROVIDES += "virtual/kernel"
---8<------------------------
-\end{verbatim}
-
-PREFEREED\_PROVIDER\_virtual/kernel = "linux-yocto"
+\begin{itemize}
+\item PREFERRED\_VERSION is used to specify a particular version
+\item by default, files have a preference of "0"
+\item setting DEFAULT\_PREFERENCE to "-1" makes the recipe unlikely to be used
+	unless it is explicitly referenced.
+\item setting DEFAULT\_PREFERENCE to "1" makes it likely the recipe is used
+\item PREFERRED\_VERSION overrides any DEFAULT\_PREFERENCE setting
+\end{itemize}
 \end{frame}
 
 \begin{frame}