- Getting OpenWalnut
- Binary Packages
- Source Installation
OpenWalnut supports all three major platforms: Linux, Mac OSX and Windows. We are offering several ways of using OpenWalnut:
- use binary packages we provide
- use binary packages NeuroDebian provides
- use a NeuroDebian virtual machine (works on all platforms)
- use NeuroDebian from within your Linux distribution without virtual machine, using a chroot-environment.
- build OpenWalnut from source on your platform
The OpenWalnut team provides several binary packages of the current OpenWalnut releases. Besides this, the NeuroDebian project also provides OpenWalnut. This section explains how to install the different binary packages.
Debian, Ubuntu, and other Debian-based Systems
Our packages are build using the NeuroDebian repository. This means, the packages we provide depend on third-party packages available in NeuroDebian. You first need to setup the NeuroDebian repository. We, therefore, refer to the documentation at http://neuro.debian.net/\#how-to-use-this-repository. Then update your package database by issuing
You now need to make a choice. Either use NeuroDebian's OpenWalnut build or directly use ours. The NeuroDebian build might be less up-to-date but the advantage of NeuroDebian is that you automatically get package updates.
1: Install from NeuroDebian:
apt-get install openwalnut openwalnut-modules
2: Install our Packages:
Download the matching DEB files.
IMPORTANT: You need to download all the files we provide for your distribution and remove any previous installed OpenWalnut packages.
Install these files using
dpkg -i *.deb
This installs the downloaded DEB packages. But it will most likely complain about dependent packages. To solve this, use
apt-get -f install
This installs the missing dependencies. If this fails, please check again that you have set-up NeuroDebian correctly and that you have downloaded all the DEB files we provide.
Other Linux distributions
A more advanced option is to use alien, a package conversion tool. Please note that we are not able to support this.
Download one of the Windows packages. These are ZIP files. Simply extract them to your disk. In the extracted directory, you will find
We do not yet provide binaries for MacOS. Consider using the NeuroDebian virtual machine.
Platform-independent via NeuroDebian Virtual Machine
If you plan to use the NeuroDebian Project, Virtual Machine on your Windows or MacOS host, please refer to the according documentation on how to install software inside the virtual machine.
Once you got the virtual machine up and running, install the OpenWalnut software packages:
Depending on your operating system, there are different ways of installing them:
Debian and Ubuntu (For Ubuntu you might consider the FAQ when missing some packages):
apt-get install cmake libboost-all-dev libqt4-dev libqtwebkit-dev openscenegraph libopenscenegraph-dev libeigen3-dev libnifti-dev libbiosig-dev build-essential
Other Linux distributions: please consult your distributions documentation for more details.
Mac OSX: Install Homebrew in order to install additional software (except OpenSceneGraph):
brew install boost cmake qt5 eigen
Beside this, the only build dependency not yet met is niftilib, which is no longer available on homebrew, and OpenSceneGraph. Please install OpenSceneGraph from source (we recommend version 3.2.1).
As QT5 is deprecated on homebrew, you need to checkout the QT6 branch (work in progress) of OpenWalnut.
Getting the source code
Generally you have two options to get the source code: Either getting the latest development snapshot from a source code repository, or downloading an archive. If unsure, checkout from the repository, for which you will need to have git installed.
Download from repository [Recommended]
git clone http://source.openwalnut.org OpenWalnut
Now you should have a directory called
OpenWalnut, change to it! Now you are in the default branch, which is the current development status, but you also may change to specific releases, e.g.
git checkout Release_X.Y.Z
You can query the possible releases by asking git which tags we provide:
Please note that this repository is not writable! If you want to contribute to our project look here.
Downloading an archive:
Download one of the source archives in our downloads section. Depending on your operating system you may now extract the source code from the command line via
tar xzf OpenWalnut_X.Y.Z.tar.gz
or by using a graphical tool, like 7-zip on Windows.
Now you should have a directory called
OpenWalnut, change to it!
Compiling and run
If you installed all the prerequisites, building OpenWalnut from scratch is very easy:
cd build cmake ../src make bin/openwalnut
Do you have multiple CPU cores? Due to cmake's build dependency management, you can issue make with the -j (jobs) parameter to specify how many parallel build jobs should be started. This can tremendously decrease build time. The following snippet shows how to start 8 parallel build jobs:
If you have installed doxygen, you can issue
cd build make doc your_browser ../doc/developer/html/index.html
Compiling on Mac OSX is basically the same as for Linux once all dependencies are installed. We highly recommend to use Homebrew as nearly all dependencies are available there and, most important, they are compatible with the new C++ stdlib from OSX 10.10.
On Windows, you need to use the MSYS2 environment. We do not support Visual Studio as its C++ compiler has certain limitations, causing OpenWalnut not to build properly.
For those of you who really want to use Visual Studio (from the bottom of their heart, with a deep love and a high frustration resistance) have a look at our new (as of 2022) try here