HP C Programmer's Guide (92434-90009)

Chapter 6 159
Migrating C Programs to HP-UX
6 Migrating C Programs to HP-UX
This chapter discusses issues to consider when migrating C language programs from VAX
systems, HP 9000 Series 300/400, and HP 9000 Series 500 computers to HP 9000 Series
700/800 computers. The first section lists some steps you need to take to migrate an
application program to an HP 9000 Series 700/800 computer. Subsequent sections in this
chapter highlight major differences between various C compilers and suggest how to
modify source files to ease migration.
Because C is a highly portable language, if you follow the recommendations given in the
chapter "Programming for Portability," your program should migrate easily. However, if
you use system-dependent programming practices, a program that executes successfully
on one computer may not execute properly when transferred to a HP 9000 Series 700/800
computer. For example, if you use system-specific I/O routines outside of the standard C
library, you will have difficulty with portability.