/*
- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#endif
/*
- * The __DARWIN_ALIAS macros is used to do symbol renaming,
- * they allow old code to use the old symbol thus maintiang binary
- * compatability while new code can use a new improved version of the
- * same function.
+ * COMPILATION ENVIRONMENTS
*
- * By default newly complied code will actually get the same symbols
- * that the old code did. Defining any of _APPLE_C_SOURCE, _XOPEN_SOURCE,
- * or _POSIX_C_SOURCE will give you the new symbols. Defining _XOPEN_SOURCE
- * or _POSIX_C_SOURCE also restricts the avilable symbols to a subset of
- * Apple's APIs.
+ * DEFAULT By default newly complied code will get POSIX APIs plus
+ * Apple API extensions in scope.
+ *
+ * Most users will use this compilation environment to avoid
+ * behavioural differences between 32 and 64 bit code.
+ *
+ * LEGACY Defining _NONSTD_SOURCE will get pre-POSIX APIs plus Apple
+ * API extensions in scope.
+ *
+ * This is generally equivalent to the Tiger release compilation
+ * environment, except that it cannot be applied to 64 bit code;
+ * its use is discouraged.
+ *
+ * We expect this environment to be deprecated in the future.
+ *
+ * STRICT Defining _POSIX_C_SOURCE or _XOPEN_SOURCE restricts the
+ * available APIs to exactly the set of APIs defined by the
+ * corresponding standard, based on the value defined.
+ *
+ * A correct, portable definition for _POSIX_C_SOURCE is 200112L.
+ * A correct, portable definition for _XOPEN_SOURCE is 600L.
+ *
+ * Apple API extensions are not visible in this environment,
+ * which can cause Apple specific code to fail to compile,
+ * or behave incorrectly if prototypes are not in scope or
+ * warnings about missing prototypes are not enabled or ignored.
+ *
+ * In any compilation environment, for correct symbol resolution to occur,
+ * function prototypes must be in scope. It is recommended that all Apple
+ * tools users add etiher the "-Wall" or "-Wimplicit-function-declaration"
+ * compiler flags to their projects to be warned when a function is being
+ * used without a prototype in scope.
+ */
+
+/*
+ * The __DARWIN_ALIAS macros are used to do symbol renaming; they allow
+ * legacy code to use the old symbol, thus maintiang binary compatability
+ * while new code can use a standards compliant version of the same function.
*
* __DARWIN_ALIAS is used by itself if the function signature has not
* changed, it is used along with a #ifdef check for __DARWIN_UNIX03
* if the signature has changed. Because the __LP64__ enviroment
* only supports UNIX03 sementics it causes __DARWIN_UNIX03 to be
* defined, but causes __DARWIN_ALIAS to do no symbol mangling.
+ *
+ * As a special case, when XCode is used to target a specific version of the
+ * OS, the manifest constant __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
+ * will be defined by the compiler, with the digits representing major version
+ * time 100 + minor version times 10 (e.g. 10.5 := 1050). If we are targetting
+ * pre-10.5, and it is the default compilation environment, revert the
+ * compilation environment to pre-__DARWIN_UNIX03.
*/
-
#if !defined(__DARWIN_UNIX03)
-#if defined(_APPLE_C_SOURCE) || defined(_XOPEN_SOURCE) || defined(_POSIX_C_SOURCE) || defined(__LP64__)
-#if defined(_NONSTD_SOURCE)
-#error "Can't define both _NONSTD_SOURCE and any of _APPLE_C_SOURCE, _XOPEN_SOURCE, _POSIX_C_SOURCE, or __LP64__"
-#endif /* _NONSTD_SOURCE */
-#define __DARWIN_UNIX03 1
-#elif defined(_NONSTD_SOURCE)
-#define __DARWIN_UNIX03 0
-#else /* default */
-#define __DARWIN_UNIX03 0
-#endif /* _APPLE_C_SOURCE || _XOPEN_SOURCE || _POSIX_C_SOURCE || __LP64__ */
+# if defined(_DARWIN_C_SOURCE) || defined(_XOPEN_SOURCE) || defined(_POSIX_C_SOURCE) || defined(__LP64__) || (defined(__arm__) && !defined(KERNEL))
+# if defined(_NONSTD_SOURCE)
+# error "Can't define both _NONSTD_SOURCE and any of _DARWIN_C_SOURCE, _XOPEN_SOURCE, _POSIX_C_SOURCE, or __LP64__"
+# endif /* _NONSTD_SOURCE */
+# define __DARWIN_UNIX03 1
+# elif defined(_NONSTD_SOURCE) || defined(KERNEL)
+# define __DARWIN_UNIX03 0
+# else /* default */
+# if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1050)
+# define __DARWIN_UNIX03 0
+# else /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 */
+# define __DARWIN_UNIX03 1
+# endif /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 */
+# endif /* _DARWIN_C_SOURCE || _XOPEN_SOURCE || _POSIX_C_SOURCE || __LP64__ */
#endif /* !__DARWIN_UNIX03 */
-#if __DARWIN_UNIX03 && !defined(__LP64__)
-#define __DARWIN_ALIAS(sym) __asm("_" __STRING(sym) "$UNIX2003")
-#else
-#define __DARWIN_ALIAS(sym)
-#endif
+#if !defined(__DARWIN_64_BIT_INO_T)
+# if defined(_DARWIN_USE_64_BIT_INODE)
+# define __DARWIN_64_BIT_INO_T 1
+# elif defined(_DARWIN_NO_64_BIT_INODE) || defined(KERNEL)
+# define __DARWIN_64_BIT_INO_T 0
+# else /* default */
+# define __DARWIN_64_BIT_INO_T 0
+# endif
+#endif /* !__DARWIN_64_BIT_INO_T */
+
+#if !defined(__DARWIN_NON_CANCELABLE)
+# if defined(KERNEL)
+# define __DARWIN_NON_CANCELABLE 0
+# else /* default */
+# define __DARWIN_NON_CANCELABLE 0
+# endif
+#endif /* !__DARWIN_NON_CANCELABLE */
+
+#if !defined(__DARWIN_VERS_1050)
+# if !defined(KERNEL) && defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) >= 1050)
+# define __DARWIN_VERS_1050 1
+# else /* default */
+# define __DARWIN_VERS_1050 0
+# endif
+#endif /* !__DARWIN_NON_CANCELABLE */
+
+/*
+ * symbol suffixes used for symbol versioning
+ */
+#if __DARWIN_UNIX03
+# if !defined(__LP64__) && !defined(__arm__)
+# define __DARWIN_SUF_UNIX03 "$UNIX2003"
+# define __DARWIN_SUF_UNIX03_SET 1
+# else /* __LP64__ || __arm__ */
+# define __DARWIN_SUF_UNIX03 /* nothing */
+# define __DARWIN_SUF_UNIX03_SET 0
+# endif /* !__LP64__ && !__arm__ */
+
+# if __DARWIN_64_BIT_INO_T
+# define __DARWIN_SUF_64_BIT_INO_T "$INODE64"
+# else /* !__DARWIN_64_BIT_INO_T */
+# define __DARWIN_SUF_64_BIT_INO_T /* nothing */
+# endif /* __DARWIN_UNIX03 */
+
+# if __DARWIN_NON_CANCELABLE
+# define __DARWIN_SUF_NON_CANCELABLE "$NOCANCEL"
+# else /* !__DARWIN_NON_CANCELABLE */
+# define __DARWIN_SUF_NON_CANCELABLE /* nothing */
+# endif /* __DARWIN_NON_CANCELABLE */
+
+# if __DARWIN_VERS_1050
+# define __DARWIN_SUF_1050 "$1050"
+# else /* !__DARWIN_VERS_1050 */
+# define __DARWIN_SUF_1050 /* nothing */
+# endif /* __DARWIN_VERS_1050 */
+
+#else /* !__DARWIN_UNIX03 */
+# define __DARWIN_SUF_UNIX03 /* nothing */
+# define __DARWIN_SUF_UNIX03_SET 0
+# define __DARWIN_SUF_64_BIT_INO_T /* nothing */
+# define __DARWIN_SUF_NON_CANCELABLE /* nothing */
+# define __DARWIN_SUF_1050 /* nothing */
+#endif /* __DARWIN_UNIX03 */
+
+#define __DARWIN_SUF_EXTSN "$DARWIN_EXTSN"
+
+/*
+ * symbol versioning macros
+ */
+#define __DARWIN_ALIAS(sym) __asm("_" __STRING(sym) __DARWIN_SUF_UNIX03)
+#define __DARWIN_ALIAS_C(sym) __asm("_" __STRING(sym) __DARWIN_SUF_NON_CANCELABLE __DARWIN_SUF_UNIX03)
+#define __DARWIN_ALIAS_I(sym) __asm("_" __STRING(sym) __DARWIN_SUF_64_BIT_INO_T __DARWIN_SUF_UNIX03)
+#define __DARWIN_INODE64(sym) __asm("_" __STRING(sym) __DARWIN_SUF_64_BIT_INO_T)
+
+#define __DARWIN_1050(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050)
+#define __DARWIN_1050ALIAS(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_UNIX03)
+#define __DARWIN_1050ALIAS_C(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_NON_CANCELABLE __DARWIN_SUF_UNIX03)
+#define __DARWIN_1050ALIAS_I(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_64_BIT_INO_T __DARWIN_SUF_UNIX03)
+#define __DARWIN_1050INODE64(sym) __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_64_BIT_INO_T)
+
+#define __DARWIN_EXTSN(sym) __asm("_" __STRING(sym) __DARWIN_SUF_EXTSN)
+#define __DARWIN_EXTSN_C(sym) __asm("_" __STRING(sym) __DARWIN_SUF_EXTSN __DARWIN_SUF_NON_CANCELABLE)
/*
# define __DARWIN_LDBL_COMPAT2(x) /* nothing */
# define __DARWIN_LONG_DOUBLE_IS_DOUBLE 1
# endif
-#elif defined(__i386__) || defined(__ppc64__)
+#elif defined(__i386__) || defined(__ppc64__) || defined(__x86_64__) || defined (__arm__)
# define __DARWIN_LDBL_COMPAT(x) /* nothing */
# define __DARWIN_LDBL_COMPAT2(x) /* nothing */
# define __DARWIN_LONG_DOUBLE_IS_DOUBLE 0
#endif
/*
- * Structure alignment control macros. These specify how certain
- * shared structures should be aligned. Some may need backward
- * compatible legacy (POWER) alignment, while others may need
- * forward compatible (NATURAL) alignment.
+ * Deprecation macro
*/
-#if !defined(__DARWIN_ALIGN_POWER)
-#if defined(__ppc64__)
-#define __DARWIN_ALIGN_POWER 1
+#if __GNUC__ >= 3
+#define __deprecated __attribute__((deprecated))
#else
-#define __DARWIN_ALIGN_POWER 0
+#define __deprecated /* nothing */
#endif
-#endif /* __DARWIN_ALIGN_POWER */
-#if !defined(__DARWIN_ALIGN_NATURAL)
-#if defined(__ppc__) && defined(KERNEL)
-#define __DARWIN_ALIGN_NATURAL 1
-#else
-#define __DARWIN_ALIGN_NATURAL 0
+/*****************************************
+ * Public darwin-specific feature macros
+ *****************************************/
+
+/*
+ * _DARWIN_FEATURE_LONG_DOUBLE_IS_DOUBLE indicates when the long double type
+ * is the same as the double type (ppc only)
+ */
+#if __DARWIN_LONG_DOUBLE_IS_DOUBLE
+#define _DARWIN_FEATURE_LONG_DOUBLE_IS_DOUBLE 1
+#endif
+
+/*
+ * _DARWIN_FEATURE_UNIX_CONFORMANCE indicates whether UNIX conformance is on,
+ * and specifies the conformance level (3 is SUSv3)
+ */
+#if __DARWIN_UNIX03
+#define _DARWIN_FEATURE_UNIX_CONFORMANCE 3
+#endif
+
+/*
+ * _DARWIN_FEATURE_64_BIT_INODE indicates that the ino_t type is 64-bit, and
+ * structures modified for 64-bit inodes (like struct stat) will be used.
+ */
+#if __DARWIN_64_BIT_INO_T
+#define _DARWIN_FEATURE_64_BIT_INODE 1
#endif
-#endif /* __DARWIN_ALIGN_NATURAL */
#endif /* !_CDEFS_H_ */
projects / apple / xnu.git / blobdiff