https://community.intel.com/t5/Intel-Fortran-Compiler/IODEF/m-p/843821#M61790 Those are OpenVMS specific I/O definitions. Look in your code for references to symbols of the form IO$* to see in what context these definitions are used. Usually such definitions are referenced to support an OpenVMS system service. How you proceed depends on if and if so, what system service is used in your code.<BR /><BR />James Thu, 27 Jun 2002 05:42:55 GMT james1 2002-06-27T05:42:55Z https://community.intel.com/t5/Intel-Fortran-Compiler/IODEF/m-p/843820#M61789 I'm still working on porting VAX fortran to Compaq fortran on a PC. When I try to include $IODEF macro using:<BR /><BR />include '(IODEF)'<BR /><BR />The builder says it can't find this file. I understand why but I'm not sure how to fix this problem. Is there something I need to install or do I need to rewrite some of the source code to look for something else (system library)? I already enabled VMS compatability.<BR /><BR />Any help or phone numbers would be greatly appreciated.<BR /><BR />Grant Thu, 27 Jun 2002 05:04:27 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/IODEF/m-p/843820#M61789 grantrickard 2002-06-27T05:04:27Z https://community.intel.com/t5/Intel-Fortran-Compiler/IODEF/m-p/843821#M61790 Those are OpenVMS specific I/O definitions. Look in your code for references to symbols of the form IO$* to see in what context these definitions are used. Usually such definitions are referenced to support an OpenVMS system service. How you proceed depends on if and if so, what system service is used in your code.<BR /><BR />James Thu, 27 Jun 2002 05:42:55 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/IODEF/m-p/843821#M61790 james1 2002-06-27T05:42:55Z