subversion using the following command:
\begin{Verbatim}
-$ svn checkout https://svn.openwrt.org/openwrt/trunk kamikaze
+$ svn checkout svn://svn.openwrt.org/openwrt/trunk kamikaze
\end{Verbatim}
Additionally, there is a trac interface on \href{https://dev.openwrt.org/}{https://dev.openwrt.org/}
Here for example, is \texttt{package/bridge/Makefile}:
\begin{Verbatim}[frame=single,numbers=left]
-# $Id: Makefile 5624 2006-11-23 00:29:07Z nbd $
include $(TOPDIR)/rules.mk
\begin{itemize}
\item \texttt{SECTION} \\
- The type of package (currently unused)
+ The section of package (currently unused)
\item \texttt{CATEGORY} \\
Which menu it appears in menuconfig: Network, Sound, Utilities, Multimedia ...
\item \texttt{TITLE} \\
Compile templates.
\begin{Verbatim}[frame=single,numbers=left]
-# $Id: $
include $(TOPDIR)/rules.mk
Here for instance the Makefile for the I2C subsytem kernel modules :
\begin{Verbatim}[frame=single,numbers=left]
-# $Id $
I2CMENU:=I2C Bus