Summary of compiler options by functional category

The XL Fortran options available on the AIX® platform are grouped into the following categories:
  • Output control
  • Input control
  • Language element control
  • Floating-point and integer control
  • Object code control
  • Error checking and debugging
  • Listings, messages, and compiler information
  • Optimization and tuning
  • Linking
  • Portability and migration
  • Compiler customization
  • Deprecated options

If the option supports an equivalent @PROCESS directive, this is indicated. To get detailed information on any option listed, see the full description page for that option.

You can enter compiler options that start with -q, suboptions, and @PROCESS directives in either uppercase or lowercase. However, note that if you specify the -qmixed option, procedure names that you specify for the -qextern option are case-sensitive.

In general, this document uses the convention of lowercase for -q compiler options and suboptions and uppercase for @PROCESS directives.

Understanding the significance of the options you use and knowing the alternatives available can save you considerable time and effort in making your programs work correctly and efficiently.

For detailed information about each compiler option, see Detailed descriptions of the XL Fortran compiler options.



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