# AMPL Installation Wizard

Here are instructions to install AMPL-Gurobi on macOS:

1. Extract the contents of the supplied AMPL-Gurobi file. Extraction is done with the following command:

       tar xvfz amplgurobi11.0.2_mac64.tar.gz

   The file name should be adjusted to reflect the actual archive file. Extraction will produce a subdirectory called `ampl`, which contains the AMPL-Gurobi software.
2. Choose a destination directory. We recommend `/usr/local/bin`, but other directories will work as well. Copy the extracted files inside the `ampl` subdirectory to the destination directory.
3. To allow the AMPL-Gurobi executable files to be found when needed, ensure that the `PATH` environment variable includes the AMPL installation directory. Assuming that AMPL is installed in `/usr/local/bin`, users of the bash shell would add the following to their .bashrc files:

       export PATH="${PATH}:/usr/local/bin"
       export LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:/usr/local/bin"

   And users of the csh shell would add the following to their .cshrc files:

       setenv PATH ${PATH}:/usr/local/bin
       setenv LD_LIBRARY_PATH ${LD_LIBRARY_PATH}:/usr/local/bin

   If LD_LIBRARY_PATH is not already set, you would use the following instead:

       export LD_LIBRARY_PATH="/usr/local/bin"

   or

       setenv LD_LIBRARY_PATH /usr/local/bin

   Note that you do not need to update LD_LIBRARY_PATH if you previously installed the standalone Gurobi Optimizer and set LD_LIBRARY_PATH during that process.
4. You will need a license key for AMPL - even if you already have a license key for the standalone Gurobi Optimizer. To get system information needed for a license key, open a terminal prompt and type the command:

       fingerprint -o fp.out

   This will generate a fingerprint file named `fp.out`. To request your license key (after we have received your payment or a Gurobi sales representative has approved your request to evaluate AMPL), email the `fp.out` file to license@gurobi.com.
5. When you receive your license key, simply copy the license key file to the installation directory or any other directory in your PATH.
6. If you are configuring a floating license server for AMPL-Gurobi, please follow the additional instructions for ampl_lic.