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      1 /*
      2  * API versioning definitions for CUPS.
      3  *
      4  * Copyright 2007-2016 by Apple Inc.
      5  *
      6  * These coded instructions, statements, and computer programs are the
      7  * property of Apple Inc. and are protected by Federal copyright
      8  * law.  Distribution and use rights are outlined in the file "LICENSE.txt"
      9  * which should have been included with this file.  If this file is
     10  * missing or damaged, see the license at "http://www.cups.org/".
     11  *
     12  * This file is subject to the Apple OS-Developed Software exception.
     13  */
     14 
     15 #ifndef _CUPS_VERSIONING_H_
     16 #  define _CUPS_VERSIONING_H_
     17 
     18 /*
     19  * This header defines several constants - _CUPS_DEPRECATED,
     20  * _CUPS_DEPRECATED_MSG, _CUPS_INTERNAL_MSG, _CUPS_API_1_1, _CUPS_API_1_1_19,
     21  * _CUPS_API_1_1_20, _CUPS_API_1_1_21, _CUPS_API_1_2, _CUPS_API_1_3,
     22  * _CUPS_API_1_4, _CUPS_API_1_5, _CUPS_API_1_6, _CUPS_API_1_7, and
     23  * _CUPS_API_2_0 - which add compiler-specific attributes that flag functions
     24  * that are deprecated, added in particular releases, or internal to CUPS.
     25  *
     26  * On macOS, the _CUPS_API_* constants are defined based on the values of
     27  * the MAC_OS_X_VERSION_MIN_ALLOWED and MAC_OS_X_VERSION_MAX_ALLOWED constants
     28  * provided by the compiler.
     29  */
     30 
     31 #  if defined(__APPLE__) && !defined(_CUPS_SOURCE) && !TARGET_OS_IOS
     32 #    include <AvailabilityMacros.h>
     33 #    ifndef AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER
     34 #      define AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER __attribute__((unavailable))
     35 #    endif /* !AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER */
     36 #    ifndef AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER
     37 #      define AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER __attribute__((unavailable))
     38 #    endif /* !AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER */
     39 #    ifndef AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER
     40 #      define AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER __attribute__((unavailable))
     41 #    endif /* !AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER */
     42 #    ifndef AVAILABLE_MAC_OS_X_VERSION_10_6_AND_LATER
     43 #      define AVAILABLE_MAC_OS_X_VERSION_10_6_AND_LATER __attribute__((unavailable))
     44 #    endif /* !AVAILABLE_MAC_OS_X_VERSION_10_6_AND_LATER */
     45 #    ifndef AVAILABLE_MAC_OS_X_VERSION_10_7_AND_LATER
     46 #      define AVAILABLE_MAC_OS_X_VERSION_10_7_AND_LATER __attribute__((unavailable))
     47 #    endif /* !AVAILABLE_MAC_OS_X_VERSION_10_7_AND_LATER */
     48 #    ifndef AVAILABLE_MAC_OS_X_VERSION_10_8_AND_LATER
     49 #      define AVAILABLE_MAC_OS_X_VERSION_10_8_AND_LATER __attribute__((unavailable))
     50 #    endif /* !AVAILABLE_MAC_OS_X_VERSION_10_8_AND_LATER */
     51 #    ifndef AVAILABLE_MAC_OS_X_VERSION_10_9_AND_LATER
     52 #      define AVAILABLE_MAC_OS_X_VERSION_10_9_AND_LATER __attribute__((unavailable))
     53 #    endif /* !AVAILABLE_MAC_OS_X_VERSION_10_9_AND_LATER */
     54 #    ifndef AVAILABLE_MAC_OS_X_VERSION_10_10_AND_LATER
     55 #      define AVAILABLE_MAC_OS_X_VERSION_10_10_AND_LATER __attribute__((unavailable))
     56 #    endif /* !AVAILABLE_MAC_OS_X_VERSION_10_10_AND_LATER */
     57 #    ifndef AVAILABLE_MAC_OS_X_VERSION_10_12_AND_LATER
     58 #      define AVAILABLE_MAC_OS_X_VERSION_10_12_AND_LATER __attribute__((unavailable))
     59 #    endif /* !AVAILABLE_MAC_OS_X_VERSION_10_12_AND_LATER */
     60 #    define _CUPS_API_1_1_19 AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER
     61 #    define _CUPS_API_1_1_20 AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER
     62 #    define _CUPS_API_1_1_21 AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER
     63 #    define _CUPS_API_1_2 AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER
     64 #    define _CUPS_API_1_3 AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER
     65 #    define _CUPS_API_1_4 AVAILABLE_MAC_OS_X_VERSION_10_6_AND_LATER
     66 #    define _CUPS_API_1_5 AVAILABLE_MAC_OS_X_VERSION_10_7_AND_LATER
     67 #    define _CUPS_API_1_6 AVAILABLE_MAC_OS_X_VERSION_10_8_AND_LATER
     68 #    define _CUPS_API_1_7 AVAILABLE_MAC_OS_X_VERSION_10_9_AND_LATER
     69 #    define _CUPS_API_2_0 AVAILABLE_MAC_OS_X_VERSION_10_10_AND_LATER
     70 #    define _CUPS_API_2_2 AVAILABLE_MAC_OS_X_VERSION_10_12_AND_LATER
     71 #  else
     72 #    define _CUPS_API_1_1_19
     73 #    define _CUPS_API_1_1_20
     74 #    define _CUPS_API_1_1_21
     75 #    define _CUPS_API_1_2
     76 #    define _CUPS_API_1_3
     77 #    define _CUPS_API_1_4
     78 #    define _CUPS_API_1_5
     79 #    define _CUPS_API_1_6
     80 #    define _CUPS_API_1_7
     81 #    define _CUPS_API_2_0
     82 #    define _CUPS_API_2_2
     83 #  endif /* __APPLE__ && !_CUPS_SOURCE */
     84 
     85 /*
     86  * With GCC and Clang we can mark old APIs as "deprecated" or "unavailable" with
     87  * messages so you get warnings/errors are compile-time...
     88  */
     89 
     90 #  ifdef __has_extension		/* Clang */
     91 #    define _CUPS_HAS_DEPRECATED
     92 #    if __has_extension(attribute_deprecated_with_message)
     93 #      define _CUPS_HAS_DEPRECATED_WITH_MESSAGE
     94 #    endif
     95 #    if __has_extension(attribute_unavailable_with_message)
     96 #      define _CUPS_HAS_UNAVAILABLE_WITH_MESSAGE
     97 #    endif
     98 #  elif defined(__GNUC__)		/* GCC and compatible */
     99 #    if __GNUC__ >= 3			/* GCC 3.0 or higher */
    100 #      define _CUPS_HAS_DEPRECATED
    101 #    endif /* __GNUC__ >= 3 */
    102 #    if __GNUC__ >= 5			/* GCC 5.x */
    103 #      define _CUPS_HAS_DEPRECATED_WITH_MESSAGE
    104 #    elif __GNUC__ == 4 && __GNUC_MINOR__ >= 5
    105 					/* GCC 4.5 or higher */
    106 #      define _CUPS_HAS_DEPRECATED_WITH_MESSAGE
    107 #    endif /* __GNUC__ >= 5 */
    108 #  endif /* __has_extension */
    109 
    110 #  if !defined(_CUPS_HAS_DEPRECATED) || (defined(_CUPS_SOURCE) && !defined(_CUPS_NO_DEPRECATED))
    111     /*
    112      * Don't mark functions deprecated if the compiler doesn't support it
    113      * or we are building CUPS source that doesn't care.
    114      */
    115 #    define _CUPS_DEPRECATED
    116 #    define _CUPS_DEPRECATED_MSG(m)
    117 #    define _CUPS_DEPRECATED_1_6_MSG(m)
    118 #    define _CUPS_DEPRECATED_1_7_MSG(m)
    119 #    define _CUPS_INTERNAL_MSG(m)
    120 #  elif defined(_CUPS_HAS_UNAVAILABLE_WITH_MESSAGE) && defined(_CUPS_NO_DEPRECATED)
    121     /*
    122      * Compiler supports the unavailable attribute, so use it when the code
    123      * wants to exclude the use of deprecated API.
    124      */
    125 #    define _CUPS_DEPRECATED __attribute__ ((unavailable))
    126 #    define _CUPS_DEPRECATED_MSG(m) __attribute__ ((unavailable(m)))
    127 #    define _CUPS_DEPRECATED_1_6_MSG(m) __attribute__ ((unavailable(m)))
    128 #    define _CUPS_DEPRECATED_1_7_MSG(m) __attribute__ ((unavailable(m)))
    129 #    define _CUPS_INTERNAL_MSG(m) __attribute__ ((unavailable(m)))
    130 #  else
    131     /*
    132      * Compiler supports the deprecated attribute, so use it.
    133      */
    134 #    define _CUPS_DEPRECATED __attribute__ ((deprecated))
    135 #    ifdef _CUPS_HAS_DEPRECATED_WITH_MESSAGE
    136 #      define _CUPS_DEPRECATED_MSG(m) __attribute__ ((deprecated(m)))
    137 #    else
    138 #      define _CUPS_DEPRECATED_MSG(m) __attribute__ ((deprecated))
    139 #    endif /* _CUPS_HAS_DEPRECATED_WITH_MESSAGE */
    140 #    if defined(MAC_OS_X_VERSION_10_8) && MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_8
    141 #      define _CUPS_DEPRECATED_1_6_MSG(m) _CUPS_DEPRECATED_MSG(m)
    142 #    else
    143 #      define _CUPS_DEPRECATED_1_6_MSG(m)
    144 #    endif /* MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_8 */
    145 #    if defined(MAC_OS_X_VERSION_10_9) && MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_9
    146 #      define _CUPS_DEPRECATED_1_7_MSG(m) _CUPS_DEPRECATED_MSG(m)
    147 #    else
    148 #      define _CUPS_DEPRECATED_1_7_MSG(m)
    149 #    endif /* MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_9 */
    150 #    ifdef _CUPS_SOURCE
    151 #      define _CUPS_INTERNAL_MSG(m)
    152 #    elif defined(_CUPS_HAS_UNAVAILABLE_WITH_MESSAGE)
    153 #      define _CUPS_INTERNAL_MSG(m) __attribute__ ((unavailable(m)))
    154 #    elif defined(_CUPS_HAS_DEPRECATED_WITH_MESSAGE)
    155 #      define _CUPS_INTERNAL_MSG(m) __attribute__ ((deprecated(m)))
    156 #    else
    157 #      define _CUPS_INTERNAL_MSG(m) __attribute__ ((deprecated))
    158 #    endif /* _CUPS_SOURCE */
    159 #  endif /* !_CUPS_HAS_DEPRECATED || (_CUPS_SOURCE && !_CUPS_NO_DEPRECATED) */
    160 
    161 #  ifndef __GNUC__
    162 #    define __attribute__(x)
    163 #  endif /* !__GNUC__ */
    164 
    165 #endif /* !_CUPS_VERSIONING_H_ */
    166