|  | /* | 
|  | * Copyright (C) 2008 The Android Open Source Project | 
|  | * All rights reserved. | 
|  | * | 
|  | * Redistribution and use in source and binary forms, with or without | 
|  | * modification, are permitted provided that the following conditions | 
|  | * are met: | 
|  | *  * Redistributions of source code must retain the above copyright | 
|  | *    notice, this list of conditions and the following disclaimer. | 
|  | *  * Redistributions in binary form must reproduce the above copyright | 
|  | *    notice, this list of conditions and the following disclaimer in | 
|  | *    the documentation and/or other materials provided with the | 
|  | *    distribution. | 
|  | * | 
|  | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 
|  | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 
|  | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | 
|  | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | 
|  | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | 
|  | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | 
|  | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS | 
|  | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | 
|  | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | 
|  | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT | 
|  | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | 
|  | * SUCH DAMAGE. | 
|  | */ | 
|  | #ifndef _FEATURES_H_ | 
|  | #define _FEATURES_H_ | 
|  |  | 
|  | /* certain Linux-specific programs expect a <features.h> header file | 
|  | * that defines various features macros | 
|  | */ | 
|  |  | 
|  | /* we do include a number of BSD extensions */ | 
|  | #define  _BSD_SOURCE  1 | 
|  |  | 
|  | /* we do include a number of GNU extensions */ | 
|  | #define  _GNU_SOURCE  1 | 
|  |  | 
|  | /* C95 support */ | 
|  | #undef __USE_ISOC95 | 
|  | #if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199409L | 
|  | # define __USE_ISOC95   1 | 
|  | #endif | 
|  |  | 
|  | /* C99 support */ | 
|  | #undef __USE_ISOC99 | 
|  | #if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L | 
|  | # define __USE_ISOC99   1 | 
|  | #endif | 
|  |  | 
|  | /* Posix support */ | 
|  | #define  __USE_POSIX   1 | 
|  | #define  __USE_POSIX2  1 | 
|  | #define  __USE_XPG     1 | 
|  |  | 
|  | #endif /* _FEATURES_H_ */ |