Simon/Development Environment

If you finish this tutorial, you will get a fully functional simon version and the coresponding source files which you of course can modify freely.

To publish your changes, please get in touch with a simon developer to receive write access to the public git repository.


The following tutorial will describe how to install everything needed to get started on developing on simon.


Please set up the emerge environment by following the tutorial on techbase.


  1. Register at (free)
  2. Download the latest windows binary version from " The file will be named "". At the moment the latest binary release for windows is the version 3.3. It can be found at this direct link: "
  3. This archive contains a folder "htk". Copy the contents of this folder to "C:\KDE\bin".
  4. You can now delete the archive.
  5. This concludes the installation.


In a KDE shell (see the KDE section above) simply run "emerge simon" to build and install simon.


Download the latest version of Julius from their homepage and install it by copying the executables to the "bin" subfolder of your KDE installation folder.


This guide will assume that you are using Ubuntu Linux or OpenSUSE. If you use a different distribution you will have to look up the correct name of the packages yourself and install them on your own.

If you already installed the binary version of simon, please remove it!

Debian based Systems:
sudo dpkg -r simon


You will need a couple of packages before getting to work. Install them using the following command:

Debian based Systems:
sudo apt-get install git-core build-essential cmake gettext gettext-kde kdeartwork \
kdelibs5-dev libxtst-dev libqt4-sql-sqlite libphonon-dev libattica-dev libattica0 zlib1g-dev 
Note: You don't actually need kdeartwork to compile or run simon - it will just look ugly without it
Note on Ubuntu 10.04: You have to add the Kubuntu backports to your repository list before installing the packages:
deb lucid main
RPM based Systems:
sudo zypper in git-core gcc gettext-tools gettext-runtime libkde4-devel \
libqt4-sql-sqlite libqt4-multimedia libqt4-phonon-devel libattica-devel libattica0 zlib-devel

If you use a different language than english we recommend installing the appropriate kde-l10n package. You can list all available translation using the following command:

Debian based Systems:
apt-cache search kde-l10n

Choose your translation and install it.

Debian based Systems:
sudo apt-get install kde-l10n-<countrycode>

You also need Qwt 6. Up do date distributions have packages ((K)Ubuntu since 11.10). Older versions of Qwt are not supported. You can find the latest version on the projects sourceforge site.


Now check out a current copy of simon from Git using the following command:

git clone git:// simonsource

This will create a new directory called simonsource in your current working directory containing the simon source code.

You can now make your changes. If you want to compile and install your new simon version, just call the build-script in the simonsource directory:

Other distributions:

You now have compiled and installed simon. Please continue to install HTK on page Installation > Linux > HTK installation.

Building in a custom prefix

This is how Frederik thinks kde applications should be built (works for me TM). Your milage may vary.

Needed: the packages as listed above.

Goal: install Simon in a custom directory and make it run from there without interfering with the rest of the system.

I have a directory "~/simon". There I have:


Howto (copy and paste this in a shell):

mkdir ~/simon
cd ~/simon
git clone git:// simonsource
mkdir build
cd build
cmake ../simonsource -DCMAKE_INSTALL_PREFIX=~/simon/install
make -j4
make install

Script to set up the environment (put this in a file "simonenv" and in a shell run "source simonenv"):

echo "Setting up Simon env..."
export SIMONPATH=~/simon/install    #adjust to the path you want to use
export LD_LIBRARY_PATH=$SIMONPATH/lib64:/usr/lib/x86_64-linux-gnu   # this is on a 64 bit kubuntu
export QT_PLUGIN_PATH=$KDEDIR/lib/kde4:$KDEDIR/lib64


Download the latest version of Julius from their homepage and install it.

This page was last edited on 16 February 2017, at 18:36. Content is available under Creative Commons License SA 4.0 unless otherwise noted.