Invoking the Compiler

Each language has a different command to invoke its compiler. The following table lists some of the languages z/VM supports and the corresponding command to invoke the language compiler.
Language Compiler Command
VS COBOL II COBOL2
OS PL/I PLIOPT
VS Pascal VSPASCAL
VS FORTRAN FORTVS2
C/C++
c89 or cxx
CC (for non-OpenExtensions program only)
Ada/370
A370 (for single source file)
PKG370 (for multiple source files)

When you invoke these commands, CMS searches all of your accessed disks or directories, using the standard search order, until it locates the specified file. See CMS Command Search Order for a description of the search order. The compiler creates an output listing file (file type of LISTING) and a text deck file (file type of TEXT). LISTING files contain the compilation list for each source file you compile. TEXT files contain the machine-language relocatable object code.

The compiler writes these files to disk according to the following priorities:
  • If the source file is on a read/write minidisk or directory, the TEXT and LISTING files are written onto that minidisk or directory.
  • If the source file is on a read-only minidisk or directory that is an extension of a read/write minidisk or directory, the TEXT and LISTING files are written onto the read/write minidisk or directory.
  • If the source file is on any other read-only minidisk or directory, the TEXT and LISTING files are written onto the first read/write minidisk or directory.
  • If the source file is on tape or in your virtual reader, the TEXT and LISTING files are written onto the first read/write minidisk or directory.
  • If the preceding choices are not available, the command is terminated.
Example: Suppose you have a FORTRAN program called TESTPROG FORTRAN. To compile the TESTPROG program using the VS FORTRAN Version 2 compiler, enter: 
fortvs2 testprog

CMS creates two files on your read/write minidisk or directory: TESTPROG TEXT and TESTPROG LISTING.

The following figure shows the files the FORTRAN compiler uses:
Figure 1. Files the FORTRAN Compiler Uses
dmsa3com dmsa3com

If your FORTRAN program compiled correctly, you receive a message similar to the following:

VS FORTRAN VERSION 2 COMPILER ENTERED.  15:33:48
 
**TESTPROG** END OF COMPILATION 1 ******
 
VS FORTRAN VERSION 2 COMPILER EXITED.   15:33:48
 
Ready; T=0.06/0.02 15:33:49

If you had any errors in your program:

  1. Edit the source program.
  2. Correct the errors.
  3. Compile the program again.