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-rw-r--r--include/features.h120
1 files changed, 77 insertions, 43 deletions
diff --git a/include/features.h b/include/features.h
index ec807d523..18f8e7fdf 100644
--- a/include/features.h
+++ b/include/features.h
@@ -19,6 +19,23 @@
#ifndef _FEATURES_H
#define _FEATURES_H 1
+/* This macro indicates that the installed library is uClibc. Use
+ * __UCLIBC_MAJOR__ and __UCLIBC_MINOR__ to test for the features in
+ * specific releases. */
+#define __UCLIBC__ 1
+
+/* Load up the current set of uClibc supported features along
+ * with the current uClibc major and minor version numbers.
+ * For uClibc release 0.9.26, these numbers would be:
+ * #define __UCLIBC_MAJOR__ 0
+ * #define __UCLIBC_MINOR__ 9
+ * #define __UCLIBC_SUBLEVEL__ 26
+ */
+#define __need_uClibc_config_h
+#include <bits/uClibc_config.h>
+#undef __need_uClibc_config_h
+#include <bits/uClibc_arch_features.h>
+
/* For uClibc, always optimize for size -- this should disable
* a lot of expensive inlining... */
#define __OPTIMIZE_SIZE__ 1
@@ -42,6 +59,7 @@
_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.
+ _ATFILE_SOURCE Additional *at interfaces.
_GNU_SOURCE All of the above, plus GNU extensions.
_REENTRANT Select additionally reentrant object.
_THREAD_SAFE Same as _REENTRANT, often used by other systems.
@@ -73,6 +91,7 @@
__USE_BSD Define 4.3BSD things.
__USE_SVID Define SVID things.
__USE_MISC Define things common to BSD and System V Unix.
+ __USE_ATFILE Define *at interfaces and AT_* constants for them.
__USE_GNU Define GNU extensions.
__USE_REENTRANT Define reentrant/thread-safe *_r functions.
__USE_FORTIFY_LEVEL Additional security measures used, according to level.
@@ -106,6 +125,7 @@
#undef __USE_BSD
#undef __USE_SVID
#undef __USE_MISC
+#undef __USE_ATFILE
#undef __USE_GNU
#undef __USE_REENTRANT
#undef __USE_FORTIFY_LEVEL
@@ -162,6 +182,8 @@
# define _BSD_SOURCE 1
# undef _SVID_SOURCE
# define _SVID_SOURCE 1
+# undef _ATFILE_SOURCE
+# define _ATFILE_SOURCE 1
#endif
/* If nothing (other than _GNU_SOURCE) is defined,
@@ -258,6 +280,10 @@
# define __USE_SVID 1
#endif
+#ifdef _ATFILE_SOURCE
+# define __USE_ATFILE 1
+#endif
+
#ifdef _GNU_SOURCE
# define __USE_GNU 1
#endif
@@ -266,37 +292,23 @@
# define __USE_REENTRANT 1
#endif
-#if _FORTIFY_SOURCE > 0 && __GNUC_PREREQ (4, 1) && defined(__OPTIMIZE__)
-# if _FORTIFY_SOURCE == 1
-# define __USE_FORTIFY_LEVEL 1
-# elif _FORTIFY_SOURCE > 1
+#if defined _FORTIFY_SOURCE && _FORTIFY_SOURCE > 0 \
+ && __GNUC_PREREQ (4, 1) && defined __OPTIMIZE__ && __OPTIMIZE__ > 0
+# if _FORTIFY_SOURCE > 1
# define __USE_FORTIFY_LEVEL 2
+# else
+# define __USE_FORTIFY_LEVEL 1
# endif
+#else
+# define __USE_FORTIFY_LEVEL 0
#endif
/* We do support the IEC 559 math functionality, real and complex. */
#define __STDC_IEC_559__ 1
#define __STDC_IEC_559_COMPLEX__ 1
-/* This macro indicates that the installed library is uClibc. Use
- * __UCLIBC_MAJOR__ and __UCLIBC_MINOR__ to test for the features in
- * specific releases. */
-#define __UCLIBC__ 1
-
-/* Load up the current set of uClibc supported features along
- * with the current uClibc major and minor version numbers.
- * For uClibc release 0.9.26, these numbers would be:
- * #define __UCLIBC_MAJOR__ 0
- * #define __UCLIBC_MINOR__ 9
- * #define __UCLIBC_SUBLEVEL__ 26
- */
-#define __need_uClibc_config_h
-#include <bits/uClibc_config.h>
-#undef __need_uClibc_config_h
-#include <bits/uClibc_arch_features.h>
-
#ifdef __UCLIBC_HAS_WCHAR__
-/* wchar_t uses ISO 10646-1 (2nd ed., published 2000-09-15) / Unicode 3.0. */
+/* wchar_t uses ISO 10646-1 (2nd ed., published 2000-09-15) / Unicode 3.1. */
# define __STDC_ISO_10646__ 200009L
#endif
@@ -308,14 +320,32 @@
* are not really intended to check for the presence of a particular library,
* but rather are used to define an _interface_. */
#if !defined __FORCE_NOGLIBC && (!defined _LIBC || defined __FORCE_GLIBC)
-# define __GNU_LIBRARY__ 6
-# define __GLIBC__ 2
-# define __GLIBC_MINOR__ 2
+/* This macro indicates that the installed library is the GNU C Library.
+ For historic reasons the value now is 6 and this will stay from now
+ on. The use of this variable is deprecated. */
+# undef __GNU_LIBRARY__
+# define __GNU_LIBRARY__ 6
+
+/* Major and minor version number of the GNU C library package. Use
+ these macros to test for features in specific releases. */
+/* Don't do it, if you want to keep uClibc happy. */
+# define __GLIBC__ 2
+# define __GLIBC_MINOR__ 2
#endif
#define __GLIBC_PREREQ(maj, min) \
((__GLIBC__ << 16) + __GLIBC_MINOR__ >= ((maj) << 16) + (min))
+#ifndef __UCLIBC__
+/* Decide whether a compiler supports the long long datatypes. */
+#if defined __GNUC__ \
+ || (defined __PGI && defined __i386__ ) \
+ || (defined __INTEL_COMPILER && (defined __i386__ || defined __ia64__)) \
+ || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
+# define __GLIBC_HAVE_LONG_LONG 1
+#endif
+#endif
+
/* This is here only because every header file already includes this one. */
#ifndef __ASSEMBLER__
# ifndef _SYS_CDEFS_H
@@ -344,33 +374,37 @@
/* If uClibc was built without large file support, output an error if
* and 64-bit file offsets were requested, output an error.
* NOTE: This is probably incorrect on a 64-bit arch... */
-#ifdef __USE_FILE_OFFSET64
-#error It appears you have defined _FILE_OFFSET_BITS=64. Unfortunately, \
+# ifdef __USE_FILE_OFFSET64
+# error It appears you have defined _FILE_OFFSET_BITS=64. Unfortunately, \
uClibc was built without large file support enabled.
-#endif
+# endif
/* If uClibc was built without large file support and _LARGEFILE64_SOURCE
* is defined, undefine it. */
-#if defined(_LARGEFILE64_SOURCE)
-#undef _LARGEFILE64_SOURCE
-#undef __USE_LARGEFILE64
-#endif
+# ifdef _LARGEFILE64_SOURCE
+# undef _LARGEFILE64_SOURCE
+# undef __USE_LARGEFILE64
+# endif
/* If we're actually building uClibc with large file support,
* define __USE_LARGEFILE64 and __USE_LARGEFILE. */
-#elif defined(_LIBC)
-#undef _LARGEFILE_SOURCE
-#undef _LARGEFILE64_SOURCE
-#undef _FILE_OFFSET_BITS
-#undef __USE_LARGEFILE
-#undef __USE_LARGEFILE64
-#undef __USE_FILE_OFFSET64
-#define _LARGEFILE_SOURCE 1
-#define _LARGEFILE64_SOURCE 1
-#define __USE_LARGEFILE 1
-#define __USE_LARGEFILE64 1
+#elif defined _LIBC
+# undef _LARGEFILE_SOURCE
+# undef _LARGEFILE64_SOURCE
+# undef _FILE_OFFSET_BITS
+# undef __USE_LARGEFILE
+# undef __USE_LARGEFILE64
+# undef __USE_FILE_OFFSET64
+# define _LARGEFILE_SOURCE 1
+# define _LARGEFILE64_SOURCE 1
+# define __USE_LARGEFILE 1
+# define __USE_LARGEFILE64 1
#endif
+/* uClibc does not support *at interfaces. */
+#undef _ATFILE_SOURCE
+#undef __USE_ATFILE
+
#ifdef _LIBC
# include <libc-internal.h>
#endif