TechInfoDepot:DD-WRT/Noob-Friendly Customized install.sh for compiling from source

I have heavily modified the original install.sh so that it is more useful and flexible. This script is not 100% complete but it is functional and will simplify the initial process of compiling from source. Because it is still in development, I would recommend that you first follow the steps here Compiling DD-WRT Sources to lay out the necessary directory structure and required files. You don't have to use install.sh, instead you can use this script to compile the distribution you want. Before copying my script please read and understand its purpose and limitations.

<> This is still under development. Some features do not work as expected. <>

What this script will allow you to do:

- Compile a single distribution, eg. builddwrt mini - Compile a combination of distributions, eg. builddwrt micro mini - Create your build environment from scratch, eg. builddwrt -nd - Download and update the source using subversion, eg. builddwrt -s

When you use the -d option, the script will automatically generate the correct filename based on the current date, then it will use wget to grab the file. If this attempt fails, the script will automatically try to download the previous day's snapshot. It will attempt to grab only the first snapshot it finds from the last 7 days. If it cannot find a snapshot by this method then you are asked to supply the date of the snapshot you want to grab.

You can name this script whatever you like and the help menu will reflect this so it appears personalized. It can also be placed most anywhere in your local path, but it's best placed directly in your home directory (~). Don't forget to issue chmod x to make this script executable.

You can combine some of the options, for example, builddwrt -ndp2 mini normal voip. This will create the directory structure for your build environment, download the latest snapshot, pause the output for 2 seconds between stages (in case you're watching), then build the image files for mini, normal and voip distributions. If you specify "all", this will expand to "micro mini normal voip openvpn".

What this script does NOT do:

This script only changes the interface for compiling your source, that is, you can consider this as install.sh on steroids. I did not make any attempts to change the actual scripts which perform the compilation, for example, install_mini.sh. Assuming we have the correct directory structure (as per the wiki), if install.sh does not properly compile your source then neither will my script.

Unless I have made a terrible mistake, if the original install.sh works for you then this script will do the same. You just have better control over the initial process.

The usual disclaimer applies here. I wrote this for my own edification and enjoyment and make no guarantees of any kind. I'm sharing this in case someone in this forum has the same interest and curiosity as myself, and may find some uses for it. I'm sure this script is rather trivial to the more experienced and technical individuals visiting this forum, but it works for me and I like it.

Copy the script below and save as builddwrt or something else you prefer.


 * 1) !/bin/sh


 * 1) Custom install.sh script for DD-WRT v23 SP1
 * 2) version 0.1b, Apr 20 2006 --jayC
 * 3) Based on the original install.sh script and ideas
 * 4) from http://forum.bsr-clan.de/ftopic7326.html
 * 5) License:  GPL2
 * 1) from http://forum.bsr-clan.de/ftopic7326.html
 * 2) License:  GPL2
 * 1) License:  GPL2


 * 1) Declaration and Initialization ##
 * 1) Declaration and Initialization ##

hr="-" debug=0
 * 1) Use hidden option "-G" to enable debug mode for this script.
 * 2) No actions will be committed while in debug mode.  This is only
 * 3) useful if you intend to modify this script and run some tests.

usage { cat <<MENU $hr
 * 1) Display usage information

Compile DD-WRT v23 SP1 with your choice of distribution(s).

Syntax: `basename $0` -[ndfshC] [-p ] distribution

Distributions: micro, mini, normal, openvpn, voip, all

Options: -n			Prepare a new build environment -d			Download latest source from snapshot -f			Force overwrite of previous files -s			Use subversion to grab latest source -p 		Add pause to screen output -h			Display this information -C			Check build environment

Examples of Proper Use: `basename $0` mini `basename $0` -p 5 micro `basename $0` normal voip `basename $0` -df all `basename $0` -ndp3 openvpn

To troubleshoot your build you can log all output by doing one of the following examples:

`basename $0` voip | tee build.log   #View and log output at same time `basename $0` voip > build.log       #No output, just create log file

You can find your log file in the same directory as your script. $hr MENU exit }

debug_script { cat <<DEBUG $hr Debug Mode (-G) Enabled No actions will be committed.
 * 1) This is our debug message

Number of arguments passed to `basename $0` 	= $arg Parameters passed				= $params Distribution(s) selected			= $@ Number of seconds to pause screen output	= $delay $hr DEBUG }

arg=$#				## number of arguments params="$@"			## parameter list dist="" opt="no" new="no" dl="no" force="no" svn="no" delay=0 proceed="no" build_all="micro mini normal openvpn voip" env="no" startdir=`pwd` ddroot="/home/dd-wrt" snaproot="$ddroot/snapshot" buildroot="$snaproot/DD-WRT" site="http://www.dd-wrt.com/dd-wrtv2/downloads/sourcecode" chainfile="toolchains.x86.debian.sp1.tar.bz2" toolchain_url="$site/$chainfile" chainroot="$ddroot/toolchains" tc3_full="3.4.6-uclibc-0.9.28" tc3_short="3.4.6" tc4_full="4.1.0-uclibc-0.9.28" tc4_short="4.1.0"
 * 1) Initialize variables

need_help { echo "Please use \"`basename $0 `-h\" to get help." exit }
 * 1) Looks like we need some help

check_env { if [ -d $buildroot ]; then env="yes" fi }
 * 1) Check for proper build environment

if [ $arg -eq 0 ]; then echo -e "\nNo arguments passed. See below for usage." usage fi
 * 1) Check if any arguments passed

while getopts ndfsp:hG option do case $option in   n) new="yes"      opt="yes" ;;    d) dl="yes" opt="yes" ;; f) force="yes"     opt="yes" ;;    s) svn="yes" opt="yes" ;; p) delay=$OPTARG     case $delay in        0|1|2|3|4|5) opt="yes" ;; *) echo -e "\nSyntax error. -p value must be between 0 - 5."          need_help ;;      esac ;;    h) usage ;; G) debug=1     opt="yes" ;;    C) ;; ## Check default build environment \?) echo -e "\nSyntax error. Unknown option in \"$params\"."    	need_help ;;  esac done
 * 1) Parse the options first, exit if unknown
 * 2) Using getopts is more efficient than shift alone

if [ "$opt" = "yes" ]; then shift `expr $OPTIND - 1` fi
 * 1) Process the distributions next by dropping the options

if [ $debug -eq 1 ]; then debug_script fi
 * 1) Optional debugging output

params="$@" arg="$#"
 * 1) Now validate the distributions
 * 2) Update these two variables with our new values

if [ $arg -eq 1 ]; then if [ "$params" = "all" ]; then dist="$build_all" proceed="yes" else case $params in     micro|mini|normal|voip|openvpn)        dist="$params"        proceed="yes" ;;      *) echo -e "\nSyntax error.  Unknown distribution \"$params\"." need_help ;; esac fi else ## multiple distributions for each in $params; do   if [ "$each" = "all" ]; then echo -e "\nSyntax error in \"$params\". Cannot use \"all\" this way." need_help else case $each in       micro|mini|normal|voip|openvpn)          dist=$dist" $each"          proceed="yes" ;;      *) echo -e "\nSyntax error.  Unknown distribution in \"$params\"." need_help ;; esac fi done fi
 * 1) Exit immediately if distribution is unknown

back_one_day { days=`expr $days + 1` monthday=`expr $(date +%d) - $days` snapday="$(date +%m)$monthday-$(date +%Y)" snapshot="$snapday-snapshot.tar.bz2" url=$site"/$snapshot" }
 * 1) Construct url for previous snapshot
 * 2) I haven't fully tested this routine, so it may
 * 3) not handle transitioning between months.  In that
 * 4) case you will have to enter the date manually for
 * 5) the snapshot you want to download.

extract_snapshot { echo -e "\nExtracting files..." tar -xjvf $snapshot }
 * 1) Extract snapshot into current location

download_snapshot { attempts=6 success="no" days=0 snapday=$(date +%m%d-%Y) snapshot="$snapday-snapshot.tar.bz2" url="$site/$snapshot" cd $snaproot while [ "$success" = "no" ] && [ $days -le $attempts ] do   echo -e "\nAttempting to download $url" if [ $debug -eq 0 ]; then if [ ! -f $snapshot ]; then wget $url fi   else echo -e "\nGrabbed $url" fi   if [ -f $snapshot ]; then echo -e "\nDownload successful." success="yes" else echo -e "\nDownload failed." back_one_day fi done
 * 1) Download latest snapshot based on current date,
 * 2) and work backwards until we find the most current
 * 3) file.  Check only within the last seven days.  You
 * 4) can change the number of attempts, if you want to.

## Can't find a snapshot within the last 7 days ## so we need to specify it manually. There's no sanity ## checks here so be careful what you enter. if [ $days -gt $attempts ] && [ "$success" = "no" ]; then echo -e "\nPlease enter snapshot date (eg. 0420):" read snapdate if [ "$snapdate" = "" ]; then echo -e "Nothing entered. Exiting." exit else snapshot="$snapdate$(date +-%Y-)snapshot.tar.bz2" url="$site/$snapshot" echo -e "\nAttempting to download $url" if [ $debug -eq 0 ]; then wget $url else echo -e "\nGrabbed $url" fi     if [ $debug -eq 0 ]; then if [ -f $snapshot ]; then echo -e "\nDownload successful." success="yes" else echo -e "\nDownload failed. Exiting." exit fi     fi    fi  fi }

download_toolchain { if [ $debug -eq 0 ]; then wget $toolchain_url if [ -f $chainfile ]; then tar -xjvf $chainfile if [ -d $chainroot ]; then mv "$chainroot/$tc3_full" "$chainroot/$tc3_short" mv "$chainroot/$tc4_full" "$chainroot/$tc4_short" else echo -e "\nProblems creating $chainroot. Exiting." exit fi fi else echo -e "\nDebug Output:" echo -e "Grabbed \n$toolchain_url" echo "tar -xjvf $chainfile" echo "mv $chainroot/$tc3_full $chainroot/$tc3_short" echo "mv $chainroot/$tc4_full $chainroot/$tc4_short" fi }
 * 1) Download and extract toolchains

setup_build_env { if [ $debug -eq 1 ]; then mkdir -p $snaproot-debug snapdir=$snaproot-debug else mkdir -p $snaproot snapdir=$snaproot fi   if [ -d $snapdir ] && [ "$dl" = "yes" ]; then download_snapshot if [ "$success" = "yes" ]; then if [ ! -d $buildroot ]; then extract_snapshot fi       if [ -d $buildroot ]; then env="yes" cd $buildroot/opt rm libgcc_s.so	 ln -sf libgcc/libgcc_s.so.1 libgcc_s.so	else echo -e "\nProblems creating $buildroot. Exiting." exit fi     fi    fi    cd $ddroot imageroot=$ddroot/image if [ $debug -eq 0 ]; then if [ ! -f $chainfile ]; then download_toolchain fi     if [ ! -d $imageroot ]; then mkdir $imageroot ln -sf $imageroot /GruppenLW fi   else echo -e "\nDebug Output:" echo "cd $ddroot" download_toolchain echo "mkdir $imageroot" echo "ln -sf $imageroot /GruppenLW" fi }
 * 1) Setup our new build environment

download_svn { if [ `which svn` ]; then echo "Found svn" fi }
 * 1) Download source using subversion
 * 2) to be completed

process_options { if [ "$new" = "yes" ] && [ "$env" = "no" ]; then setup_build_env fi }
 * 1) Execute options specified

ver=23 compile_kernel { export MYPATH=$PATH export PATH=/home/dd-wrt/toolchains/3.4.6/bin:$MYPATH echo "#define BUILD_DATE \"$(date +%D)\"" > build.h
 * 1) Compile the kernel using the 3.4.6 toolchain
 * 2) Default version is v23

export SRCBASE=$(cd "../src" && pwd -P) echo $SRCBASE

cd ../src cd linux/linux.v$ver make oldconfig make clean make dep make make modules }

prep_userspace { cd ../../ make clean cd ../opt export PATH=/home/dd-wrt/toolchains/4.1.0/bin:$MYPATH }
 * 1) Switch to 4.1.0 toolchain for compiling userspace

prep_install { cd ../src/router rm -dfr mipsel-uclibc/install make httpd-clean make rc-clean make shared-clean cd ../../opt }
 * 1) Perform clean-up before installing

mark_start { start=`date +%s` }
 * 1) Mark start of build, in seconds

mark_stop { stop=`date +%s` total=`expr $stop - $start`
 * 1) Mark end of build and compute total time taken

## If ruby is installed then compute fancy total ## otherwise just echo total seconds if [ `which ruby` ]; then ruby <<CODE total = ($total - 3*$delay) puts "\n$build build completed in: #{(total/60).to_s.strip} minute(s), #{(total%60).to_s.strip} second(s)." CODE else echo -e "\n$build build completed in: $total seconds." fi }


 * 1) Main ##
 * 1) Main ##

if [ "$opt" = "yes" ]; then process_options fi

check_env

if [ "$env" = "yes" ]; then cd "$buildroot/opt" else cat <<NEW Serious error: $buildroot does not exist!

Please use -nd options to create the proper directories. You must be root (or have root privileges) for this step.

Example: `basename $0` -ndp2 mini

This will create $buildroot, download and extract the latest snapshot, add a 2 seconds pause to the output, and compile the mini image files.

See help: `basename $0` -h

NEW exit fi

if [ "$proceed" = "no" ]; then echo -e "\nNothing to compile. Exiting." exit fi
 * 1) Okay to proceed?

if [ "$params" = "all" ]; then distributions=$build_all else distributions=$params fi

echo -e "\nThe following distribution(s) will be compiled: $distributions\n"

echo "Started at $(date +%D' - '%T)"

for build in $dist; do mark_start echo -e "\nWorking on $build distribution..." echo -e "\nStarting stage1 (compile kernel)..." sleep $delay if [ $debug -eq 0 ]; then compile_kernel fi echo -e "\nStarting stage2 (prep userspace)..." sleep $delay if [ $debug -eq 0 ]; then prep_userspace fi echo -e "\nFinal stage, creating $build image files..." sleep $delay if [ $debug -eq 0 ]; then prep_install ./install_$build.sh fi  mark_stop sleep $delay done

echo -e "\nCompleted at $(date +%D' - '%T)"