16.2  How to load the library

To use the library, you must have an MP solver that eplex can use. This can be an open-source solver such as the COIN-OR project’s CLP/CBC solvers, which is distributed with ECLiPSe, or a commercial solver such as XPRESS-MP or CPLEX. Your ECLⁱPS^e should be configured to load in a ‘default’ solver if there is more than one available.

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See the library manual’s Eplex chapter for details for how to install the solver.

When configured properly, the library can be loaded with the directive:

This will load the library with the default external MP solver.

You probably need a valid license in order to use an external commercial solver.