Testing a PTF before you install it

If you want to try out a new update to the compiler before you remove the existing version from the system, you must install the new update to a non-default location.

About this task

To install a PTF to a non-default location, use the procedure described in Installing XL C/C++ to a location separate from earlier versions (for advanced users).

After you have finished testing the new PTF and have verified that you want to replace the older version with the new update, you can install the PTF to the default location by doing the following:

  1. Remove the new update from the non-default location.
  2. Remove the older version from the default location.
    Important: Do not uninstall the vac.lic package. This package is required for the next step.
  3. Re-install the new update to the default location using the xlc_install utility that comes with the update package.
What to do next
For instructions on how to use the xlc_install utility to install the new update, see Updating a basic installation using the xlc_install utility.