suvreq.h

Advanced UNIX Programming is the long-awaited (19 years!) update to the 1985 original. Maybe "update

/*
	Asking the system what it has (header)
	AUP2, Sec. 1.05.3

	Copyright 2003 by Marc J. Rochkind. All rights reserved.
	May be copied only for purposes and under conditions described
	on the Web page www.basepath.com/aup/copyright.htm.

	The Example Files are provided "as is," without any warranty;
	without even the implied warranty of merchantability or fitness
	for a particular purpose. The author and his publisher are not
	responsible for any damages, direct or incidental, resulting
	from the use or non-use of these Example Files.

	The Example Files may contain defects, and some contain deliberate
	coding mistakes that were included for educational reasons.
	You are responsible for determining if and how the Example Files
	are to be used.

*/
#ifndef _SUVREQ_H_
#define _SUVREQ_H_
/*[suvreq-h]*/
/*
	Header to request specific standard support. Before including it, one
	of the following symbols must be defined (1003.1-1988 isn't supported):

		SUV_POSIX1990	for 1003.1-1990
		SUV_POSIX1993	for 1003.1b-1993 - real-time
		SUV_POSIX1996	for 1003.1-1996
		SUV_SUS1		for Single UNIX Specification, v. 1 (UNIX 95)
		SUV_SUS2		for Single UNIX Specification, v. 2 (UNIX 98)
		SUV_SUS3		for Single UNIX Specification, v. 3
*/

#ifdef _POSIX_SOURCE /* tmp */
#error
#endif

#if defined(SUV_POSIX1990)
#define _POSIX_SOURCE
#define _POSIX_C_SOURCE 1

#elif defined(SUV_POSIX1993)
#define _POSIX_SOURCE
#define _POSIX_C_SOURCE 199309L

#elif defined(SUV_POSIX1996)
#define _POSIX_SOURCE
#define _POSIX_C_SOURCE 199506L

#elif defined(SUV_SUS1)
#define _POSIX_SOURCE
#define _POSIX_C_SOURCE 2
#define _XOPEN_SOURCE
#define _XOPEN_SOURCE_EXTENDED 1

#elif defined(SUV_SUS2)
#define _POSIX_SOURCE
#define _POSIX_C_SOURCE 199506L
#define _XOPEN_SOURCE 500
#define _XOPEN_SOURCE_EXTENDED 1

#elif defined(SUV_SUS3)
#define _POSIX_SOURCE
#define _POSIX_C_SOURCE 200112L
#define _XOPEN_SOURCE 600
#define _XOPEN_SOURCE_EXTENDED 1
#endif
/*[]*/

#endif /* _SUVREQ_H_ */