2014-12-29 13:07:54 +01:00
|
|
|
/* Macros to check if a POSIX configuration variable is defined or set.
|
|
|
|
|
|
2018-01-01 01:32:25 +01:00
|
|
|
Copyright (C) 1991-2018 Free Software Foundation, Inc.
|
2014-12-29 13:07:54 +01:00
|
|
|
This file is part of the GNU C Library.
|
|
|
|
|
|
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
|
|
|
modify it under the terms of the GNU Lesser General Public
|
|
|
|
|
License as published by the Free Software Foundation; either
|
|
|
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
|
|
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
|
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
|
Lesser General Public License for more details.
|
|
|
|
|
|
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
|
|
|
License along with the GNU C Library; if not, see
|
|
|
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
|
|
|
|
|
|
#ifndef _POSIX_CONF_VARS_H
|
|
|
|
|
#define _POSIX_CONF_VARS_H
|
|
|
|
|
|
|
|
|
|
/* The script gen-posix-conf-vars.awk generates the header
|
|
|
|
|
posix-conf-vars-def.h from the list file posix-conf-vars.list and defines
|
|
|
|
|
CONF_DEF_* macros for each entry in the list file set to either of
|
|
|
|
|
CONF_DEF_UNDEFINED, CONF_DEF_DEFINED_SET or CONF_DEF_DEFINED_UNSET. To
|
|
|
|
|
check configuration variables within glibc code, use the configuration macro
|
|
|
|
|
functions instead of checking for definitions of the macros. */
|
|
|
|
|
|
|
|
|
|
#include <posix-conf-vars-def.h>
|
|
|
|
|
|
|
|
|
|
#define CONF_DEF_UNDEFINED 1
|
|
|
|
|
#define CONF_DEF_DEFINED_SET 2
|
|
|
|
|
#define CONF_DEF_DEFINED_UNSET 3
|
|
|
|
|
|
|
|
|
|
/* The configuration variable is not defined. */
|
|
|
|
|
#define CONF_IS_UNDEFINED(conf) (CONF_DEF##conf == CONF_DEF_UNDEFINED)
|
|
|
|
|
|
|
|
|
|
/* The configuration variable is defined. It may or may not be set. */
|
|
|
|
|
#define CONF_IS_DEFINED(conf) (CONF_DEF##conf != CONF_DEF_UNDEFINED)
|
|
|
|
|
|
|
|
|
|
/* The configuration variable is defined and set. */
|
|
|
|
|
#define CONF_IS_DEFINED_SET(conf) (CONF_DEF##conf == CONF_DEF_DEFINED_SET)
|
|
|
|
|
|
|
|
|
|
/* The configuration variable is defined but not set. */
|
|
|
|
|
#define CONF_IS_DEFINED_UNSET(conf) (CONF_DEF##conf == CONF_DEF_DEFINED_UNSET)
|
|
|
|
|
|
|
|
|
|
#endif
|
