It is highly recommended that you install XL C/C++ for Blue Gene to the default location and use the procedure provided in Basic installation. However, you will need to install XL C/C++ for Blue Gene in a non-default location for customized scenarios, including the following:
In all of these scenarios, you must use the Linux rpm utility to install the compiler; you can not use the xlc_install utility to do so. Once you have successfully installed the compiler to a non-default location, you will need to manually configure the compiler environment using the new_install or vac_configure utilities; see Configuring XL C/C++ (for advanced users) for procedures.