hphp/util/compilation-flags.h

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-present Facebook, Inc. (http://www.facebook.com)  |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16 #pragma once
  17
  18 namespace HPHP {
  19
  20 //////////////////////////////////////////////////////////////////////
  21
  22 /*
  23  * This header converts some common preprocessor symbols into
  24  * compile-time constant booleans.
  25  *
  26  * This allows writing code that is checked for being able to compile
  27  * regardless of whether the preprocessor flag is on.  (Then we rely
  28  * on DCE to remove the cases that can't happen.)
  29  */
  30
  31 //////////////////////////////////////////////////////////////////////
  32
  33 constexpr bool debug =
  34 #ifndef NDEBUG
  35   true
  36 #else
  37   false
  38 #endif
  39   ;
  40
  41 constexpr bool hhvm_reuse_tc =
  42 #ifdef HHVM_REUSE_TC
  43   true
  44 #else
  45   false
  46 #endif
  47   ;
  48
  49 constexpr bool use_tsan =
  50 #ifdef FOLLY_SANITIZE_THREAD
  51   true
  52 #else
  53   false
  54 #endif
  55   ;
  56
  57 constexpr bool facebook =
  58 #ifdef HHVM_FACEBOOK
  59   true
  60 #else
  61   false
  62 #endif
  63   ;
  64
  65 //////////////////////////////////////////////////////////////////////
  66
  67 }