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 nondefault location.
Procedure
To configure the compiler, use the procedure described in Running the xlc_configure utility directly.
What to do next
After you have finished testing the new PTF and have verified that you want to replace the older version with the new update, install the PTF to the default location.
For instructions on how to install the new update, see Updating a basic installation.
If the existing version on the system was installed using an advanced installation, follow the instructions in Updating multiple versions of PTFs installed under separate locations to install the PTF packages to the location of your choice.
