After you have completed the installation and licensing steps, you can verify that everything is working by running one or more of the examples that are provided with the standard distribution.

Verifying Installation on UNIX

On a UNIX system, go to the subdirectory examples/machine/libformat that matches your particular platform, and in it you will find a file named Makefile. Execute one of the examples, for instance lpex1.c, by doing

If your interest is in running one of the C++ examples, try

If your interest is in running one of the Java examples, try

make LPex1.class
java -Djava.library.path=../../../bin/<platform>: \
     -classpath ../../../lib/cplex.jar: LPex1 -r

Any of these examples should return an optimal objective function value of 202.5.

Verifying Installation on Windows

On a Windows machine, you can follow a similar process using the facilities of your compiler interface to compile and then run any of the examples. A project file for each example is provided, in a format for Microsoft Visual Studio 6 and Visual Studio .NET.

In Case of Errors

If an error occurs during the make or compile step, then check that you are able to access the compiler and the necessary linker/loader files and system libraries. If an error occurs on the next step, when executing the program created by make, then the nature of the error message will guide your actions. If the problem is in licensing, consult the ILOG License Manager User's Guide and Reference for further guidance. For Windows users, if the program has trouble locating cplex90.dll or ILOG.CPLEX.dll, make sure the DLL is stored either in the current directory or in a directory listed in your PATH environment variable.

The UNIX Makefile, or Windows project file, contains useful information regarding recommended compiler flags and other settings for compilation and linking.

Compiling and Linking Your Own Applications

The source files for the examples and the makefiles provide guidance for how your own application can call ILOG CPLEX. The following chapters give more specific information on the necessary header files for compilation, and how to link ILOG CPLEX and Concert Technology libraries into your application.