darwin/compatibility_hacks.c

   1 /*
   2  * Copyright (c) 2016 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #include <TargetConditionals.h>
  30
  31 #if !TARGET_OS_IPHONE && !TARGET_OS_DRIVERKIT
  32
  33 #define WEAK_SYMBOL_LD_CMD(sym, version) \
  34         __asm__(".section __TEXT,__const\n\t" \
  35                 ".globl $ld$weak$os" #version "$_" #sym "\n\t" \
  36                 "$ld$weak$os" #version "$_" #sym ":\n\t" \
  37                 "    .byte 0\n\t" \
  38                 ".previous")
  39
  40 #define ADDED_IN_10_12(sym) WEAK_SYMBOL_LD_CMD(sym, 10.11)
  41 #define ADDED_IN_10_13(sym) WEAK_SYMBOL_LD_CMD(sym, 10.12)
  42
  43 ADDED_IN_10_12(getentropy);
  44
  45 ADDED_IN_10_12(clock_getres);
  46 ADDED_IN_10_12(clock_gettime);
  47 ADDED_IN_10_12(clock_settime);
  48
  49 ADDED_IN_10_12(basename_r);
  50 ADDED_IN_10_12(dirname_r);
  51
  52 ADDED_IN_10_12(mkostemp);
  53 ADDED_IN_10_12(mkostemps);
  54
  55 ADDED_IN_10_12(timingsafe_bcmp);
  56
  57 ADDED_IN_10_13(utimensat);
  58
  59 #endif /* TARGET_OS_IPHONE */