System prerequisites

All system prerequisites must be ready on your system before XL C and its documentation can be successfully installed and run.

Supported operating systems:
- AIX® V5.3 TL 5300-07 or later
- AIX V6.1
- AIX V7.1
- IBM® i V6.1 PASE V6.1 with PTF SI30636 or later
- IBM i V7.1 PASE V7.1
Note: Additional filesets must be installed on these systems. For details, see Required filesets for installing XL C.
Required hard disk space: 430 MB
Required software for documentation:
- HTML browser
- PDF viewer

Verifying the amount of hard disk space available

You can use the following command to determine the amount of space available in the default installation location (/usr/vac/):

df -m /usr

If you plan to install the compiler to a non-default location, you can use the following command:

df -m installation_path

In this command, installation_path represents the non-default location.

Required filesets for installing XL C

The following filesets must be installed on your system in order to install IBM XL C for AIX, V12.1:

Fileset name	Fileset description
bos.adt.include	Base application development include files
bos.adt.lib	Base application development libraries
bos.adt.libm	Base application development math libraries
bos.rte	Base operating system run time
bos.rte.libc	Base application runtime library

At least one of the following locale-specific filesets must be installed on your system:

Fileset name	Fileset description
bos.loc.LANG	Base locale support
bos.loc.pc.LANG	Base system locale PC code set
bos.loc.utf.LANG	Base system locale UTF code set
bos.loc.iso.LANG	Base system locale ISO code set

You can view information about the installed filesets by using the lslpp command. For example, to determine if the required filesets have been installed, use the following command:

lslpp -L bos.adt.include bos.adt.lib bos.adt.libm bos.loc.* bos.rte bos.rte.libc

Note: If one of the required filesets is missing, an error message might be generated, for example,

MISSING REQUISITES: The following filesets are required by one or more of the selected 
filesets listed above. They are not currently installed and could not be found on the 
installation media.

bos.adt.libm 5.3.7.0 # Base Level Fileset

This message indicates that the bos.adt.libm fileset is required but not installed.

To install a missing fileset, use the following command:

# installp -acXgd installation_path fileset

In this command, installation_path represents the location of the fileset to be installed.

For further information, see the installation video on IBM Education Assistant at http://publib.boulder.ibm.com/infocenter/ieduasst/rtnv1r0/topic/com.ibm.iea.compileraix/compileraix/12.1/Installation/Prereq_installation/libm_installation_viewlet_swf.html?dmuid=20111028142719997096.