## Getting it
Sandhi, as mentioned earlier, is a free and open-source software, it can be downloaded and distributed freely under GNU GPL V3
### Pre-requisites
Sandhi is conglomeration of libraries and softwares. It uses GNU Radio at its core. For computational purposes, Scilab and Octave can be interfaced with Sandhi. Sandhi uses a special wrapper called Sciscipy which allows one to call scilab functions from python without having to worry about datatype conversion.
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#### Installing GNU Radio dependencies
*If on Ubuntu 12.04, one can directly install using command*-
sudo apt-get -y install git-core autoconf automake make libtool g++ python-dev swig \
pkg-config libboost1.48-all-dev libfftw3-dev libcppunit-dev libgsl0-dev \
libusb-dev sdcc libsdl1.2-dev python-wxgtk2.8 python-numpy \
python-cheetah python-lxml doxygen python-qt4 python-qwt5-qt4 libxi-dev \
libqt4-opengl-dev libqwt5-qt4-dev libfontconfig1-dev libxrender-dev \
python-serial python-matplotlib
_Please note that Sandhi has been known to **not** work libboost1.49 available in Ubuntu 12.10 repositories._
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#### Sciscipy
Sciscipy is _must_ for Sandhi's control blocks to work; to install:
Clone sciscipy-1.0.0 from our repository; run _install_ script from the directory with **sudo** privileges to automatically pull all dependencies for Sciscipy, build and install it
git clone https://github.com/manojgudi/sciscipy-1.0.0.git
cd sciscipy-1.0.0/
sudo ./install
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### Build it
#### Downloading Source Code
git clone http://github.com/gnu-sandhi/sandhi.git
cd sandhi/
git submodule init
git submodule update
-- UPDATING FROM EXISTING CHECKOUT --
cd sandhi/
git pull origin master
git submodule update
#### Compiling Source Code
cd sandhi/
mkdir build
cd build/
cmake ../
make -j 2
sudo make install
sudo ldconfig
#### Current Build Status [](https://travis-ci.org/gnu-sandhi/sandhi)
### Get Binary
Builds for Ubuntu 12.04 for 64bit Architecture is hosted [here](http://fossee.in/sandhi_builds/)
#### Packaging it for Ubuntu for other architecture
We use a package called [fpm](https://github.com/jordansissel/fpm/wiki) to roll-out .deb files for Ubuntu.
1. First install fpm for Ubuntu
`sudo apt-get install rubygems`
2. Download [ffi package](http://rubygems.org/downloads/ffi-1.9.0.gem)
Install that using gem
`gem install ffi`
3. Similarly, download latest fpm.gem
`gem install fpm`
Now packaging Sandhi using fpm we have to build Sandhi by changing _cmake_ option.
`cmake -DCMAKE_INSTALL_PREFIX:PATH=out`
and then proceed as given in __Build it__ section from _make_ command.
`fpm -s dir -t deb -n "sandhi" -v 0.9 -C out/ -p sandhi-VERSION_ARCH.deb -d "git-core autoconf automake make libtool g++ python-dev swig pkg-config libboost1.48-all-dev libfftw3-dev libcppunit-dev libgsl0-dev libusb-dev sdcc libsdl1.2-dev python-wxgtk2.8 python-numpy python-cheetah python-lxml doxygen python-qt4 python-qwt5-qt4 libxi-dev libqt4-opengl-dev libqwt5-qt4-dev libfontconfig1-dev libxrender-dev" /usr/local/bin /usr/local/include/ /usr/local/lib /usr/local/libexec/ /usr/local/share/ /usr/local/etc/`
#### Final steps
- To run sandhi, path variables need to be set; even if one has installed through debian package.
- Set Path variables in /etc/environment
`export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games`
`export SCI=/usr/share/scilab`
`export LD_LIBRARY_PATH=:/usr/lib/scilab:/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/amd64/server/:/usr/lib/jvm/java-6-openjdk/jre/lib/amd64/native_threads/:/usr/local/lib`
`export PYTHONPATH=/usr/local/lib/python2.7/dist-packages/`
- Source /etc/environment in .bashrc
`source /etc/environment`
- Logout and login again, and you are done!
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