X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/6e2ed99ca37ae4140552fc24ce7b8bac9e156133..d9af4395f45b894e60d622046c131419db22971a:/docs/build.tex diff --git a/docs/build.tex b/docs/build.tex index 54d31c582..9dfce5937 100644 --- a/docs/build.tex +++ b/docs/build.tex @@ -384,6 +384,59 @@ After you have created your \texttt{package/\textit{}/Makefile}, the new p will automatically show in the menu the next time you run "make menuconfig" and if selected will be built automatically the next time "\texttt{make}" is run. +\subsection{Creating binary packages} + +You might want to create binary packages and include them in the resulting images as packages. +To do so, you can use the following template, which basically sets to nothing the Configure and +Compile templates. + +\begin{Verbatim}[frame=single,numbers=left] +# $Id: $ + +include $(TOPDIR)/rules.mk + +PKG_NAME:=binpkg +PKG_VERSION:=1.0 +PKG_RELEASE:=1 + +PKG_SOURCE:=binpkg-$(PKG_VERSION).tar.gz +PKG_SOURCE_URL:=http://server +PKG_MD5SUM:=9b7dc52656f5cbec846a7ba3299f73bd +PKG_CAT:=zcat + +include $(INCLUDE_DIR)/package.mk + +define Package/binpkg + SECTION:=net + CATEGORY:=Network + TITLE:=Binary package +endef + +define Package/bridge/description + Binary package +endef + +define Build/Configure +endef + +define Build/Compile +endef + +define Package/bridge/install + $(INSTALL_DIR) $(1)/usr/sbin + $(INSTALL_BIN) $(PKG_BUILD_DIR)/* $(1)/usr/sbin/ +endef + +$(eval $(call BuildPackage,bridge)) +\end{Verbatim} + +Provided that the tarball which contains the binaries reflects the final +directory layout (/usr, /lib ...), it becomes very easy to get your package +look like one build from sources. + +Note that using the same technique, you can easily create binary pcakages +for your proprietary kernel modules as well. + \subsection{Creating kernel modules packages} The OpenWrt distribution makes the distinction between two kind of kernel modules, those coming along with the mainline kernel, and the others available as a separate project. We will see later that a common template is used for both of them. @@ -483,3 +536,60 @@ Other useful targets include: \item \texttt{make package/\textit{}/configure V=99} \end{itemize} + +\subsection{Using build environments} +OpenWrt provides a means of building images for multiple configurations +which can use multiple targets in one single checkout. These \emph{environments} +store a copy of the .config file generated by \texttt{make menuconfig} and the contents +of the \texttt{./files} folder. +The script \texttt{./scripts/env} is used to manage these environments, it uses +\texttt{git} (which needs to be installed on your system) as backend for version control. + +The command +\begin{Verbatim} + \texttt{./scripts/env help} +\end{Verbatim} +produces a short help text with a list of commands. + +To create a new environment named \texttt{current}, run the following command +\begin{Verbatim} + ./scripts/env new current +\end{Verbatim} +This will move your \texttt{.config} file and \texttt{./files} (if it exists) to +the \texttt{env/} subdirectory and create symlinks in the base folder. + +After running make menuconfig or changing things in files/, your current state will +differ from what has been saved before. To show these changes, use: +\begin{Verbatim} + ./scripts/env diff +\end{Verbatim} + +If you want to save these changes, run: +\begin{Verbatim} + ./scripts/env save +\end{Verbatim} +If you want to revert your changes to the previously saved copy, run: +\begin{Verbatim} + ./scripts/env revert +\end{Verbatim} + +If you want, you can now create a second environment using the \texttt{new} command. +It will ask you whether you want to make it a clone of the current environment (e.g. +for minor changes) or if you want to start with a clean version (e.g. for selecting +a new target). + +To switch to a different environment (e.g. \texttt{test1}), use: +\begin{Verbatim} + ./scripts/env switch test1 +\end{Verbatim} + +To rename the current branch to a new name (e.g. \texttt{test2}), use: +\begin{Verbatim} + ./scripts/env rename test2 +\end{Verbatim} + +If you want to get rid of environment switching and keep everything in the base directory +again, use: +\begin{Verbatim} + ./scripts/env clear +\end{Verbatim}