Building the code for OpenWRT malta

This is for OpenWRT malta device which is designed for Qemu Mipsel and have been tested on Debian Wheezy 64-bit.

Go on the Building the code for Linux page and follow the instructions for the first two sections:

• Download dependencies
• Download source code

Download OpenWRT toolchain

1. Install dependencies

   sudo dpkg add-architecture i386; sudo apt-get update
   sudo apt-get install ccache libncurses5-dev zlib1g-dev gawk unzip libc6:i386 libstdc++6:i386 zlib1g:i386

2. Go to trunk/third-party directory and download OpenWRT SDK for openwrt malta

   cd ../../third-party
   wget http://downloads.openwrt.org/attitude_adjustment/12.09-rc1/malta/generic/OpenWrt-SDK-malta-for-linux-i486-gcc-4.6-linaro_uClibc-0.9.33.2.tar.bz2
   tar xjvf OpenWrt-SDK-malta-for-linux-i486-gcc-4.6-linaro_uClibc-0.9.33.2.tar.bz2

3. Set up OpenWRT environmental variables

   export OPENWRT_SDK=`pwd`/OpenWrt-SDK-malta-for-linux-i486-gcc-4.6-linaro_uClibc-0.9.33.2
   export STAGING_DIR=$OPENWRT_SDK/staging_dir
   export TOOLCHAIN=$STAGING_DIR/toolchain-mipsel_r2_gcc-4.6-linaro_uClibc-0.9.33.2/
   export CC="$TOOLCHAIN/bin/mipsel-openwrt-linux-uclibc-gcc"
   export CXX="$TOOLCHAIN/bin/mipsel-openwrt-linux-uclibc-g++"
   export AR="$TOOLCHAIN/bin/mipsel-openwrt-linux-uclibc-ar"
   export CC_host="gcc"
   export CXX_host="g++"
   export GYP_DEFINES="$GYP_DEFINES target_arch=mipsel"

4. Install libexpat for OpenWRT toolchain

   cd $OPENWRT_SDK
   svn export svn://svn.openwrt.org/openwrt/packages/libs/expat package/expat; make
   cp build_dir/target-mipsel_r2_uClibc-0.9.33.2/expat-2.0.1/.libs/libexpat.a $TOOLCHAIN/lib
   cp build_dir/target-mipsel_r2_uClibc-0.9.33.2/expat-2.0.1/lib/*.h $TOOLCHAIN/include/
   cd ../../

Build ipop-tincan for OpenWRT

1. Create ninja build files

   gclient runhooks --force

2. Update ninja build files to use -msoft-float and -fno-stack-protector

   sed -i 's/mhard-float/msoft-float/g' `find out/Release -name *.ninja`
   sed -i 's/fstack-protector/fno-stack-protector/g' `find out/Release -name *.ninja`
   sed -i 's/mhard-float/msoft-float/g' `find out/Debug -name *.ninja`
   sed -i 's/fstack-protector/fno-stack-protector/g' `find out/Debug -name *.ninja`

3. Build tincan for OpenWrt (binary located at out/Release/ipop-tincan)

   ninja -C out/Release ipop-tincan

4. To build debug version with gdb symbols (but creates 25 MB binary)

   ninja -C out/Debug ipop-tincan

5. The generated binary is located at out/Release/ipop-tincan or out/Debug/ipop-tincan

Download controllers

1. Download SocialVPN and GroupVPN controllers

   wget http://github.com/ipop-project/controllers/raw/master/src/ipoplib.py
   wget http://github.com/ipop-project/controllers/raw/master/src/svpn_controller.py
   wget http://github.com/ipop-project/controllers/raw/master/src/gvpn_controller.py