In this IBM Redbooks publication, we focus on how to move applications written in C/C++ from other UNIX operating systems to z/OS UNIX System Services. We highlight the traditional strengths of z/OS, and describe some of the subsystems not always found on other UNIX variations. We address application development tools, the C/C++ compiler, and open source development code such as the C++ Standard Template Library (STL) and the Adaptive Communication Environment (ACE). We also suggest some performance tuning techniques.

Finally, a "real world" port of a C/C++ application is detailed. First we describe the application itself, and then discuss the following aspects of the port:

Before What we did to set up the application development environment

During Which issues we encountered while porting to z/OS

After How we tuned the application once it was running

In conclusion, we summarize our overall findings. Many additional appendixes are included for reference such as:

- A comparison of z/OS and GNU compilers and make tools

- OS/390 C/C++ compiler ASCII support

- STLPort information

- Discussion of dumps

- Performance analyzer output

- OS/390 UNIX Porting Guide - process management

Chapter 1. z/OS and OS/390 tools

Chapter 2. UNIX and C/C++ basics in z/OS

Chapter 3. z/OS UNIX development tools

Chapter 4. z/OS C/C++ compiler

Chapter 5. Standard C++ Library

Chapter 6. Adaptive Communication Environment (ACE)

Chapter 7. Performance and tuning techniques

Chapter 8. net.TABLES Application

Chapter 9. Establishing a development environment

Chapter 10. Porting net.TABLES

Chapter 11. Tuning net.TABLES

Chapter 12. Conclusions from net.TABLES port

Chapter 13. Porting Xalan-C++

Appendix A. Sample code

Appendix B. Comparison of z/OS and GNU compiler and make tools

Appendix C. OS/390 C/C++ compiler ASCII support

Appendix D. STLPort

Appendix E. Dumps

Appendix F. Performance analyzer output

Appendix G. Bit field

Appendix H. OS/390 UNIX Porting Guide - process management