A great collection of information covering what you always wanted to know about XL C.
Product Documentation
XL C Enterprise Edition for AIXV9.0PDF FilesInformation CenterV8.0PDF FilesInformation CenterV7.0PDF FilesInformation Center
C for AIXV6.0PDF FilesV5.0PDF Files
IBM Redbooks
Developing and Porting C and C++ Applications on AIX, SG24-5674AIX 5L Porting Guide, SG24-6034The POWER4 Processor Introduction and Tuning Guide, SG24-7041
Ordering publications
Displayable BookManager and PDF (softcopy) versions of most publications are available free or for a fee from the IBM Publications Center.
Selected articles and white papers
Code Optimization with IBM XL Compilers (PDF)A Brief Overview of the IBM XL Compiler Family (PDF)Develop fast, reliable code with IBM Rational PurifyPlus (PDF)
Software announcements
XL C Enterprise Edition for AIX, V9.0 - June 2007XL C/C++ Advanced Edition V8.0.1 for Linux - August 2006XL C/C++ Advanced Edition V8.0 for Blue Gene (maintenance offering) - March 2006XL C/C++ Advanced Edition V8.0 for Blue Gene (initial offering) - March 2006Software withdrawal: C for AIX V6.0, VisualAge C++ Professional for AIX V6.0, and XL Fortran for AIX V8.1 - December 2005XL C/C++ Advanced Edition V8.0 for Linux - December 2005XL C Enterprise Edition V8.0 for AIX - October 2005XL C/C++ Enterprise Edition V8.0 for AIX - October 2005Software withdrawal and service discontinuance: XL C/C++ Advanced Edition V6.0 for Mac OS X and XL Fortran Advanced Edition V8.1 for Mac OS X - August 2005XL C/C++ Advanced Edition V7.0.1 for Linux - March 2005XL C/C++ Advanced Edition V7.0 for Linux - October 2004XL C Enterprise Edition V7.0 for AIX - August 2004XL C/C++ Enterprise Edition V7.0 for AIX - August 2004
Support information and documents
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