diff options
Diffstat (limited to 'features.h')
| -rw-r--r-- | features.h | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/features.h b/features.h index de1fe008a2..4b50bea75a 100644 --- a/features.h +++ b/features.h @@ -50,7 +50,6 @@ Cambridge, MA 02139, USA. */ The macro `__GNU_LIBRARY__' is defined by this file unconditionally. - All macros defined by this file are defined as 1. All macros listed above as possibly being defined by this file are explicitly undefined if they are not explicitly defined. Feature-test macros that are not defined by the user or compiler @@ -80,32 +79,42 @@ Cambridge, MA 02139, USA. */ #define __FAVOR_BSD 1 #endif +/* If _GNU_SOURCE was defined by the user, turn on all the other features. */ +#ifdef _GNU_SOURCE +/* If the user specifies some of the following without _GNU_SOURCE, + they are mutually exclusive. But they all default below to on, + so undefine them to get all the features turned on for _GNU_SOURCE. */ +#undef _POSIX_SOURCE +#undef _POSIX_C_SOURCE +#undef _BSD_SOURCE +#undef _SVID_SOURCE +#endif /* If nothing (other than _GNU_SOURCE) is defined, define _BSD_SOURCE and _SVID_SOURCE. */ -#if (!defined(__STRICT_ANSI__) && !defined(_POSIX_SOURCE) && \ - !defined(_POSIX_C_SOURCE) && !defined(_BSD_SOURCE) && \ - !defined(_SVID_SOURCE)) +#if (!defined (__STRICT_ANSI__) && !defined (_POSIX_SOURCE) && \ + !defined (_POSIX_C_SOURCE) && !defined (_BSD_SOURCE) && \ + !defined (_SVID_SOURCE)) #define _BSD_SOURCE 1 #define _SVID_SOURCE 1 #endif /* If none of the ANSI/POSIX macros are defined, use POSIX.1 and POSIX.2. */ -#if (!defined(__STRICT_ANSI__) && !defined(_POSIX_SOURCE) && \ - !defined(_POSIX_C_SOURCE)) +#if (!defined (__STRICT_ANSI__) && !defined (_POSIX_SOURCE) && \ + !defined (_POSIX_C_SOURCE)) #define _POSIX_SOURCE 1 #define _POSIX_C_SOURCE 2 #endif -#if defined(_POSIX_SOURCE) || _POSIX_C_SOURCE >= 1 +#if defined (_POSIX_SOURCE) || _POSIX_C_SOURCE >= 1 #define __USE_POSIX 1 #endif -#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 2 +#if defined (_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 2 #define __USE_POSIX2 1 #endif -#if defined(_BSD_SOURCE) || defined(_SVID_SOURCE) +#if defined (_BSD_SOURCE) || defined (_SVID_SOURCE) #define __USE_MISC 1 #endif @@ -133,10 +142,10 @@ Cambridge, MA 02139, USA. */ the shared C library corresponding to this set of header files. */ #undef __GNU_LIBRARY__ -#define __GNU_LIBRARY__ 5 +#define __GNU_LIBRARY__ 6 -#if !defined(__GNUC__) || __GNUC__ < 2 +#if !defined (__GNUC__) || __GNUC__ < 2 /* In GCC version 2, (__extension__ EXPR) will not complain about GCC extensions used in EXPR under -ansi or -pedantic. */ #define __extension__ |