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* features.h (__FAVOR_BSD): Define only if _BSD_SOURCE is defined

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and no other _*_SOURCE macro is.
	(_GNU_SOURCE): Don't define by default.
	* libc-symbols.h (_GNU_SOURCE): Define it.
This commit is contained in:
Roland McGrath
1996-03-19 21:59:41 +00:00
parent c8cf0b14ed
commit d3669add24
4 changed files with 24 additions and 13 deletions
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16
features.h
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@ -1,4 +1,4 @@
/* Copyright (C) 1991, 1992, 1993, 1995 Free Software Foundation, Inc.
/* Copyright (C) 1991, 92, 93, 95, 96 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -31,7 +31,7 @@ Cambridge, MA 02139, USA. */
_GNU_SOURCE All of the above, plus GNU extensions.
The `-ansi' switch to the GNU C compiler defines __STRICT_ANSI__.
If none of these are defined, the default is _GNU_SOURCE.
If none of these are defined, the default is all but _GNU_SOURCE.
If more than one of these are defined, they accumulate.
For example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE
together give you ANSI C, 1003.1, and 1003.2, but nothing else.
@ -69,20 +69,14 @@ Cambridge, MA 02139, USA. */
#undef __FAVOR_BSD
/* If nothing is defined, define _GNU_SOURCE. */
#if (!defined(_GNU_SOURCE) && !defined(__STRICT_ANSI__) && \
!defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) && \
!defined(_BSD_SOURCE) && !defined(_SVID_SOURCE))
#define _GNU_SOURCE 1
#endif
/* Always use ANSI things. */
#define __USE_ANSI 1
/* If _BSD_SOURCE was defined by the user, favor BSD over POSIX. */
#ifdef _BSD_SOURCE
#if defined (_BSD_SOURCE) && \
!(defined (_POSIX_SOURCE) || defined (_POSIX_C_SOURCE) ||
defiend (_GNU_SOURCE) || defined (_SVID_SOURCE))
#define __FAVOR_BSD 1
#endif