IBM Support

IBM XL C/C++ Runtime for AIX 16.1



This page contains the Runtime Environment package for use with applications developed using the IBM XL C/C++ for AIX 16.1 compiler or its predecessors.

Download Description

If you want to run an application developed with the IBM XL C/C++ for AIX 16.1.x compiler, but do not have the corresponding version of compiler or runtime already installed, then you need to install the Runtime environment package. For more information, review XL C++ runtime environment filesets.

Table of Contents
Sections Description

The Change history section provides an overview on what is new in this release with a description of any new functions or enhancements when applicable.

The Prerequisites section provides important information to review before the installation of this release.

The Download package section provides the direct link to obtain the download package for installation in your environment.

The Installation instructions section provides the installation instructions necessary to apply this release into your environment.

Supporting Documentation
Document Description

Click to review the detailed system requirements information for a complete list of hardware requirements, supported operating systems, prerequisites and optional supported software, with component-level details and operating system restrictions.

IBM Docs provides an entry point to product documentation. You can view, browse, and search online information related to the product.

You can also visit the XL C/C++ for AIX library to review more documentation.

Click to review a complete list of the defects (APARs) resolved in this release including a list of resolved defects for the entire version family.


Prerequisites include:

Operating system:

  • IBM AIX V7.1 TL4
  • IBM AIX V7.2
  • IBM i V7.3 PASE V7.3

Disk space:

  • 50 MB

Installation Instructions

Review the installation instructions.

Terms and Conditions: By downloading, installing, copying, accessing or using this software you agree to the terms and conditions outlined in the License Agreement. Review the  License Agreement and  License Information documents before proceeding with download or installation.

Installation instructions

You can install this software using the System Management and Installation Tool (SMIT) utility.

You must log on as root or have the superuser authority.

To install this software using the SMIT interface, follow these steps:

  1. Download the wanted package.

  2. Decompress and extract each package into a separate empty directory with the following command:

    zcat .tar.Z | tar -xf -

  3. Run the following command:

    smit install_latest

    This command invokes SMIT, which presents a menu-driven user interface for the installation process.
    First specify the INPUT device/directory of the software by typing in the name of the directory that contains the extracted package.

  4. If you have read the license agreement and agree to its terms, you must select yes next to Accept new LICENSE agreements? to continue with the installation.

  5. The default values can be modified according to your preferences.



  • You must install the Runtime environment package before installing the Utilities package, if you install both packages.
  • To ensure that all necessary filesets are installed, keep the default setting of SOFTWARE to install as _all_latest; otherwise, you have to specify the filesets individually.
  • You can preview the installation process without installing the software by selecting yes next to the Preview only? field.
  • Press Enter when you are done customizing the options to start the installation process.
    Installation starts and messages are displayed as each part is installed. The installation log is stored to the $HOME/smit.log file.
  • If you select _all_latest, SMIT will attempt to install all runtime filesets. As a result, you might see the failed installation status for some message catalog filesets because of missing prerequisites. Ignore those errors if you do not need the runtime message catalog(s) for the national language(s).
  • If you do not have the associated filesets (bos.loc.*) installed for a specific locale, the runtime message filesets (xlC.msg.*) will fail to install.

Download Package

The Runtime package IBM_XL_CPP_RUNTIME_V16.1.0.0_AIX.tar.Z contains the following files:

How critical is this fix?

Impact Assessment
Impact Description

This is a General Availability (GA) release.

Problems Solved

Defects resolved

Click the Fix List link in the table of contents above to review a list of the problems resolved in this release.

Known Side Effects

Review the following list of known issues and open defects:

There are no known issues report.

Open defects

Review the following  list of open defects for IBM XL C/C++ for AIX on the IBM Support Portal.

Change History

What's new

For information about new features and enhancements, review the  Announcement letter .

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Technical Support

The IBM XL C/C++ for AIX Runtime environment is not supported as a stand-alone software product.

If you suspect a problem with the IBM XL C/C++ Runtime environment component while using it with a third-party application, contact your application provider for support.

Full support (installation, defect support and general questions) for the IBM XL C/C++ Runtime environment component is available with the software subscription and support agreement for the  XL C/C++ Compilers .

A suitable test case is required for defect support; review technote  1260804: Test case preparation for IBM XL compilers support for details.

Depending on your application, you may also need to install the IBM XL C/C++ Utilities for AIX 16.1 package.
* The Utilities package contains files that may be required by some third-party applications.
* Only download and install the Utilities package if instructed by your application provider.

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Document Information

Modified date:
25 October 2021