Building the code for OpenWRT ar71xx

These are the build instructions for the OpenWRT D-LINK DIR-505 that we have purchased from Amazon for testing. Click here for instructions on how to flash your router.

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 ar71xx

   cd ../../third-party
   wget http://downloads.openwrt.org/attitude_adjustment/12.09/ar71xx/generic/OpenWrt-SDK-ar71xx-for-linux-i486-gcc-4.6-linaro_uClibc-0.9.33.2.tar.bz2
   tar xjvf OpenWrt-SDK-ar71xx-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-ar71xx-for-linux-i486-gcc-4.6-linaro_uClibc-0.9.33.2
   export STAGING_DIR=$OPENWRT_SDK/staging_dir
   export TOOLCHAIN=$STAGING_DIR/toolchain-mips_r2_gcc-4.6-linaro_uClibc-0.9.33.2/
   export CC="$TOOLCHAIN/bin/mips-openwrt-linux-uclibc-gcc"
   export CXX="$TOOLCHAIN/bin/mips-openwrt-linux-uclibc-g++"
   export AR="$TOOLCHAIN/bin/mips-openwrt-linux-uclibc-ar"
   export CC_host="gcc"
   export CXX_host="g++"
   export GYP_DEFINES="target_arch=mips use_openssl=1"

4. Install libexpat for OpenWRT toolchain

   cd $OPENWRT_SDK
   svn export svn://svn.openwrt.org/openwrt/branches/packages_12.09/libs/expat package/expat; make
   cp build_dir/target-mips_r2_uClibc-0.9.33.2/expat-2.0.1/.libs/libexpat.a $TOOLCHAIN/lib
   cp build_dir/target-mips_r2_uClibc-0.9.33.2/expat-2.0.1/lib/*.h $TOOLCHAIN/include/
   cp -r /usr/include/X11 $TOOLCHAIN/include/
   cd ../../

##Some miscellaneous tricks to get things working

Comment out the "latebindingsymbol" source in trunk/talk/libjingle.gyp so no ninja files are created for it.

   ['os_posix==1', {
       'sources': [
         #'base/latebindingsymboltable.cc',
         #'base/latebindingsymboltable.h',
         'base/posix.cc',
         'base/posix.h',
         'base/unixfilesystem.cc',
         'base/unixfilesystem.h',
       ],

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. Update some files file

   wget https://github.com/pstjuste/ipop-tincan/raw/75e2c5fae7b6375ef2ead4a93595275492a6a259/build/typedefs.h
   wget https://github.com/pstjuste/ipop-tincan/raw/75e2c5fae7b6375ef2ead4a93595275492a6a259/build/ipop-tincan.ninja
   move typedefs.h webrtc/typedefs.h
   move ipop-tincan.ninja out/Release/obj/talk/ipop-tincan.ninja
   cd ..
   

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

   ninja -C out/Release ipop-tincan

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

   ninja -C out/Debug ipop-tincan

6. 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/socialvpn/raw/master/src/svpn_controller.py
   wget http://github.com/ipop-project/groupvpn/raw/master/src/gvpn_controller.py