XL Fortran for AIX 8.1
User's Guide
Partial Table-of-Contents
Most Fortran program development consists of a repeating cycle of editing,
compiling and linking (which is by default a single step), and running.
If you encounter problems at some part of this cycle, you may need to refer to
the chapters that follow this one for help with optimizing, debugging, and so
on.
Prerequisite Information:
- Before you can use the compiler, all the required AIX settings (for
example, certain environment variables and storage limits) must be correct for
your user ID; for details, see Correct Settings for Environment Variables.
- Before using the compiler for a specialized purpose, such as porting or
performance tuning, look at the categories of options in Summary of the XL Fortran Compiler Options to see if XL Fortran already provides a solution.
- To learn more about writing Fortran programs, refer to the XL Fortran for AIX Language Reference.
Note that you can substitute references to libxlf90_r.a in
this chapter with references to libxlf90.a. This is
because a link is provided from the libxlf90.a library to the libxlf90_r.a library. You do not need to manually link with separate libraries depending on whether you are creating
a threaded or a non-threaded application. XL Fortran determines at run
time whether your application is threaded.
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