diff options
Diffstat (limited to 'include/features.h')
| -rw-r--r-- | include/features.h | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/include/features.h b/include/features.h index d1f4ae3d29..52aeaabb4c 100644 --- a/include/features.h +++ b/include/features.h @@ -27,7 +27,8 @@ _POSIX_SOURCE IEEE Std 1003.1. _POSIX_C_SOURCE If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2; if >=199309L, add IEEE Std 1003.1b-1993 - _XOPEN_SOURCE Includes POSIX and XPG things. + _XOPEN_SOURCE Includes POSIX and XPG things. Set to 500 if + Single Unix conformance is wanted. _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions. _BSD_SOURCE ISO C, POSIX, and 4.3BSD things. _SVID_SOURCE ISO C, POSIX, and SVID things. @@ -50,6 +51,7 @@ __USE_POSIX199309 Define IEEE Std 1003.1b things. __USE_XOPEN Define XPG things. __USE_XOPEN_EXTENDED Define X/Open Unix things. + __USE_UNIX98 Define Single Unix V2 things. __USE_BSD Define 4.3BSD things. __USE_SVID Define SVID things. __USE_MISC Define things common to BSD and System V Unix. @@ -111,7 +113,7 @@ # undef _POSIX_C_SOURCE # define _POSIX_C_SOURCE 199309L # undef _XOPEN_SOURCE -# define _XOPEN_SOURCE 1 +# define _XOPEN_SOURCE 500 # undef _XOPEN_SOURCE_EXTENDED # define _XOPEN_SOURCE_EXTENDED 1 # undef _BSD_SOURCE @@ -141,7 +143,7 @@ #if (!defined __STRICT_ANSI__ && !defined _POSIX_SOURCE && \ !defined _POSIX_C_SOURCE) # define _POSIX_SOURCE 1 -# ifdef _XOPEN_SOURCE +# if defined _XOPEN_SOURCE && _XOPEN_SOURCE != 500 # define _POSIX_C_SOURCE 2 # else # define _POSIX_C_SOURCE 199309L @@ -162,8 +164,13 @@ #ifdef _XOPEN_SOURCE # define __USE_XOPEN 1 -# ifdef _XOPEN_SOURCE_EXTENDED +# if _XOPEN_SOURCE == 500 # define __USE_XOPEN_EXTENDED 1 +# define __USE_UNIX98 1 +# else +# ifdef _XOPEN_SOURCE_EXTENDED +# define __USE_XOPEN_EXTENDED 1 +# endif # endif #endif |