Before you install
IBM® XL
Fortran for AIX®, V15.1, do the following tasks:
- Familiarize yourself with the installation image, which contains
the installable compiler filesets.
- Ensure that system prerequisites such as disk space and operating
system are met.
- Determine the tasks you need to perform, depending on your installation
requirements.
- Become either the root user or a user with administrator privileges.
Coexistence with previous version compilers
Installing
this version of the compiler does not remove or change previous versions
of the compiler, only the Fortran runtime library and the SMP runtime
library are migrated to the new versions. This was achieved by differentiating
the installation fileset names from those of the previous versions,
including the version, release and modification level (V.R.M) in the
name, and installing to new locations that include V.R.M in the installation
paths.
The compiler invocations from previous
compiler installations in the /usr/bin/ directory
will not be removed. The new compiler invocations will be installed
to the /opt/IBM/xlf/15.1.0/bin/ directory.
To invoke this version of the compiler without specifying the full
installation path, you must update your PATH or create shortcuts.
For details, see Creating shortcuts to the XL Fortran invocation commands.
Upgrading the evaluation copy of the XL Fortran compiler
You
can upgrade the evaluation version of the compiler to the licensed
version by installing the licensed product package on top of the evaluation
package. By following the
Basic installation or
Advanced installation procedure for the licensed product
package, the compiler license can be installed. Shared filesets between
the evaluation and licensed versions that have already been installed
are reported as
Already installed.
Note: If the evaluation
version was installed using the advanced (non-default) installation
method, and you want to install the licensed version to
the same location, you must first remove the evaluation version
using rm -rf, or install the licensed version to
a different directory than the evaluation version.