XOPEN(7V) — ENVIRONMENTS, TABLES, AND TROFF MACROS

NAME

xopen − overview of the X/Open Portability Guide Issue 2 (X/Open) environment

SYNOPSIS

/usr/5bin/lint −n −lxopen xopen_src.c

AVAILABILITY

This command is available with the System V software installation option. Refer to Installing SunOS 4.1 for information on how to install optional software.

DESCRIPTION

X/Open is a set of functions and header files. The SunOS Release 4.1 implementation of X/Open is a superset — it includes all of the functionality described in the /usr/group Standard 1984 — as well as much of the System V functionality, and much of the SunOS functionality.

All man pages that are associated with X/Open are marked by a “V” after the section number. Not all “V” pages are X/Open, however. Some “V” pages may be part of other System V based environments such as POSIX.1.

If a user desires to work in a X/Open (or System V) environment, the user should set the path variable to include /usr/xpg2bin and /usr/5bin before anything else. The typical path is:

set path=( /usr/xpg2bin /usr/5bin /bin /usr/bin /usr/ucb )

As a portability aid, Sun is providing a lint library that consists exclusively of X/Open functions. Users may lint their code with the −n −lxopen options to catch all non-X/Open features.

X/Open, as with most other environments, continues to evolve. The −lxopen lint library will always refer to the most recent document supported by Sun. Some applications may wish to port to a particular version of the environment; they may safely use the more specific name of −lxpg2 (currently the same as −lxopen).

FILES

/usr/xpg2bin/∗ X/Open specific executables

/usr/xpg2include/∗ X/Open specific header files

/usr/5include/∗ System V specific header files

/usr/xpg2lib/∗ X/Open specific library files

/usr/5lib/∗ System V specific library files

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