IBM® XL C/C++ for AIX®, V11.1 supports AIX 5L™ for POWER® Version 5.3 and AIX Version 6.1. See the README file and Before installing XL C/C++ for a complete list of requirements.
The compiler, its libraries, and its generated object programs will run on systems with the required software and disk space.
To take maximum advantage of the various supported hardware configurations, the compiler provides options to tune the performance of applications specific to the type of hardware that will be used to execute the compiled applications.