# 2. Installation and configuration¶

## 2.1. Software requirements¶

Packaged versions of Dynare are available for Windows XP/Vista/7/8/10, Debian GNU/Linux, Ubuntu and macOS 10.8 or later. Dynare should work on other systems, but some compilation steps are necessary in that case.

In order to run Dynare, you need one of the following:

• MATLAB version 7.9 (R2009b) or above (MATLAB R2009b 64-bit for macOS);
• GNU Octave version 4.2.1 or above, with the statistics package from Octave-Forge.

The following optional extensions are also useful to benefit from extra features, but are in no way required:

• If under MATLAB: the Optimization Toolbox, the Statistics Toolbox, the Control System Toolbox;
• If under GNU Octave, the following Octave-Forge packages: optim, io, control.

## 2.2. Installation of Dynare¶

After installation, Dynare can be used in any directory on your computer. It is best practice to keep your model files in directories different from the one containing the Dynare toolbox. That way you can upgrade Dynare and discard the previous version without having to worry about your own files.

### 2.2.1. On Windows¶

Execute the automated installer called dynare-4.x.y-win.exe (where 4.x.y is the version number), and follow the instructions. The default installation directory is c:\dynare\4.x.y.

After installation, this directory will contain several sub-directories, among which are matlab, mex and doc.

The installer will also add an entry in your Start Menu with a shortcut to the documentation files and uninstaller.

Note that you can have several versions of Dynare coexisting (for example in c:\dynare), as long as you correctly adjust your path settings (see see Some words of warning).

### 2.2.2. On Debian GNU/Linux and Ubuntu¶

Please refer to the Dynare wiki for detailed instructions.

Dynare will be installed under /usr/lib/dynare. Documentation will be under /usr/share/doc/dynare-doc.

### 2.2.3. On macOS¶

To install Dynare for use with Matlab, execute the automated installer called dynare-4.x.y.pkg (where 4.x.y is the version number), and follow the instructions. The default installation directory is /Applications/Dynare/4.x.y (please refer to the Dynare wiki for detailed instructions).

After installation, this directory will contain several sub-directories, among which are matlab, mex and doc.

Note that several versions of Dynare can coexist (by default in /Applications/Dynare), as long as you correctly adjust your path settings (see Some words of warning).

To install Dynare for Octave, first install Homebrew following the instructions on their site: https://brew.sh/. Then install Octave, issuing the command brew install octave at the Terminal prompt. You can then install the latest stable version of Dynare by typing brew install dynare at the Terminal prompt. You can also pass options to the installation command. These options can be viewed by typing brew info dynare at the Terminal prompt.

### 2.2.4. For other systems¶

You need to download Dynare source code from the Dynare website and unpack it somewhere.

Then you will need to recompile the pre-processor and the dynamic loadable libraries. Please refer to README.md.

## 2.3. Compiler installation¶

### 2.3.1. Prerequisites on Windows¶

There is no prerequisites on Windows. Dynare now ships a compilation environment that can be used with the use_dll option.

### 2.3.2. Prerequisites on Debian GNU/Linux and Ubuntu¶

Users of MATLAB under GNU/Linux need a working compilation environment installed. If not already present, it can be installed via apt-get install build-essential.

Users of Octave under GNU/Linux should install the package for MEX file compilation (under Debian or Ubuntu, it is called liboctave-dev).

### 2.3.3. Prerequisites on macOS¶

[TO BE UPDATED]

If you are using MATLAB under macOS, you should install the latest version of XCode: see instructions on the Dynare wiki.

## 2.4. Configuration¶

### 2.4.1. For MATLAB¶

You need to add the matlab subdirectory of your Dynare installation to MATLAB path. You have two options for doing that:

• Using the addpath command in the MATLAB command window:

Under Windows, assuming that you have installed Dynare in the standard location, and replacing 4.x.y with the correct version number, type:

>> addpath c:/dynare/4.x.y/matlab


Under Debian GNU/Linux or Ubuntu, type:

>> addpath /usr/lib/dynare/matlab


Under macOS, assuming that you have installed Dynare in the standard location, and replacing 4.x.y with the correct version number, type:

>> addpath /Applications/Dynare/4.x.y/matlab


MATLAB will not remember this setting next time you run it, and you will have to do it again.

Select the “Set Path” entry in the “File” menu, then click on “Add Folder…”, and select the matlab subdirectory of ‘your Dynare installation. Note that you should not use “Add with Subfolders…”. Apply the settings by clicking on “Save”. Note that MATLAB will remember this setting next time you run it.

### 2.4.2. For GNU Octave¶

You need to add the matlab subdirectory of your Dynare installation to Octave path, using the addpath at the Octave command prompt.

Under Windows, assuming that you have installed Dynare in the standard location, and replacing “4.x.y” with the correct version number, type:

octave:1> addpath c:/dynare/4.x.y/matlab


Under Debian GNU/Linux or Ubuntu, there is no need to use the addpath command; the packaging does it for you.

Under macOS, assuming that you have installed Dynare and Octave via Homebrew, type:

octave:1> addpath /usr/local/opt/dynare/lib/dynare/matlab


If you don’t want to type this command every time you run Octave, you can put it in a file called .octaverc in your home directory (under Windows this will generally be c:\Documents and Settings\USERNAME\ while under macOS it is /Users/USERNAME/). This file is run by Octave at every startup.

### 2.4.3. Some words of warning¶

You should be very careful about the content of your MATLAB or Octave path. You can display its content by simply typing path in the command window.

The path should normally contain system directories of MATLAB or Octave, and some subdirectories of your Dynare installation. You have to manually add the matlab subdirectory, and Dynare will automatically add a few other subdirectories at runtime (depending on your configuration). You must verify that there is no directory coming from another version of Dynare than the one you are planning to use.

You have to be aware that adding other directories (on top of the dynare folders) to your MATLAB or Octave path can potentially create problems if any of your M-files have the same name as a Dynare file. Your routine would then override the Dynare routine, making Dynare unusable.

Warning

Never add all the subdirectories of the matlab folder to the MATLAB or Octave path. You must let Dynare decide which subdirectories have to be added to the MATLAB or Octave path. Otherwise, you may end up with a non optimal or un-usable installation of Dynare.