Hi, I want to allow a configure script to be told the number of CPUs to build some software for. The manual says 'AC_ARG_ENABLE' can read an agument, but I can't for the life of me see how to get it. I basically want to have something AC_DEFINE CPUS to be an integer read whilst configuring the program. Dr. David Kirkby PhD, Senior Research Fellow, Department of Medical Physics, University College London, 11-20 Capper St, London, WC1E 6JA. Tel: 020 7679 6408 Fax: 020 7679 6269 Internal telephone: ext 46408 e-mail davek@xxxxxxxxxxxxxxxxx Web page: http://www.medphys.ucl.ac.uk/~davek