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-rw-r--r--include/features.h31
1 files changed, 29 insertions, 2 deletions
diff --git a/include/features.h b/include/features.h
index 52aeaab..e8c97f8 100644
--- a/include/features.h
+++ b/include/features.h
@@ -30,6 +30,9 @@
_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.
+ _LARGEFILE_SOURCE Some more functions for correct standard I/O.
+ _LARGEFILE64_SOURCE Additional functionality from LFS for large files.
+ _FILE_OFFSET_BITS=N Select default filesystem interface.
_BSD_SOURCE ISO C, POSIX, and 4.3BSD things.
_SVID_SOURCE ISO C, POSIX, and SVID things.
_GNU_SOURCE All of the above, plus GNU extensions.
@@ -52,6 +55,8 @@
__USE_XOPEN Define XPG things.
__USE_XOPEN_EXTENDED Define X/Open Unix things.
__USE_UNIX98 Define Single Unix V2 things.
+ __USE_LARGEFILE64 Define LFS things with separate names.
+ __USE_FILE_OFFSET64 Define 64bit interface as default.
__USE_BSD Define 4.3BSD things.
__USE_SVID Define SVID things.
__USE_MISC Define things common to BSD and System V Unix.
@@ -78,6 +83,10 @@
#undef __USE_POSIX199309
#undef __USE_XOPEN
#undef __USE_XOPEN_EXTENDED
+#undef __USE_UNIX98
+#undef __USE_LARGEFILE
+#undef __USE_LARGEFILE64
+#undef __USE_FILE_OFFSET64
#undef __USE_BSD
#undef __USE_SVID
#undef __USE_MISC
@@ -100,6 +109,7 @@
#if defined _BSD_SOURCE && \
!(defined _POSIX_SOURCE || defined _POSIX_C_SOURCE || \
defined _XOPEN_SOURCE || defined _XOPEN_SOURCE_EXTENDED || \
+ defined _LARGEFILE64_SOURCE || defined _FILE_OFFSET_BITS || \
defined _GNU_SOURCE || defined _SVID_SOURCE)
# define __FAVOR_BSD 1
#endif
@@ -116,6 +126,8 @@
# define _XOPEN_SOURCE 500
# undef _XOPEN_SOURCE_EXTENDED
# define _XOPEN_SOURCE_EXTENDED 1
+# undef _LARGEFILE64_SOURCE
+# define _LARGEFILE64_SOURCE 1
# undef _BSD_SOURCE
# define _BSD_SOURCE 1
# undef _SVID_SOURCE
@@ -127,6 +139,7 @@
#if (!defined __STRICT_ANSI__ && !defined _ISOC9X_SOURCE && \
!defined _POSIX_SOURCE && !defined _POSIX_C_SOURCE && \
!defined _XOPEN_SOURCE && !defined _XOPEN_SOURCE_EXTENDED && \
+ !defined _LARGEFILE64_SOURCE && !defined _FILE_OFFSET_BITS && \
!defined _BSD_SOURCE && !defined _SVID_SOURCE)
# define _BSD_SOURCE 1
# define _SVID_SOURCE 1
@@ -143,7 +156,7 @@
#if (!defined __STRICT_ANSI__ && !defined _POSIX_SOURCE && \
!defined _POSIX_C_SOURCE)
# define _POSIX_SOURCE 1
-# if defined _XOPEN_SOURCE && _XOPEN_SOURCE != 500
+# if defined _XOPEN_SOURCE && (_XOPEN_SOURCE - 0) != 500
# define _POSIX_C_SOURCE 2
# else
# define _POSIX_C_SOURCE 199309L
@@ -164,9 +177,11 @@
#ifdef _XOPEN_SOURCE
# define __USE_XOPEN 1
-# if _XOPEN_SOURCE == 500
+# if (_XOPEN_SOURCE - 0) == 500
# define __USE_XOPEN_EXTENDED 1
# define __USE_UNIX98 1
+# undef _LARGEFILE_SOURCE
+# define _LARGEFILE_SOURCE 1
# else
# ifdef _XOPEN_SOURCE_EXTENDED
# define __USE_XOPEN_EXTENDED 1
@@ -174,6 +189,18 @@
# endif
#endif
+#ifdef _LARGEFILE_SOURCE
+# define __USE_LARGEFILE 1
+#endif
+
+#ifdef _LARGEFILE64_SOURCE
+# define __USE_LARGEFILE64 1
+#endif
+
+#if defined _FILE_OFFSET_BITS && _FILE_OFFSET_BITS == 64
+# define __USE_FILE_OFFSET64 1
+#endif
+
#if defined _BSD_SOURCE || defined _SVID_SOURCE
# define __USE_MISC 1
#endif