| // Specific definitions for Darwin -*- C++ -*- |
| |
| // Copyright (C) 2004-2025 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // Under Section 7 of GPL version 3, you are granted additional |
| // permissions described in the GCC Runtime Library Exception, version |
| // 3.1, as published by the Free Software Foundation. |
| |
| // You should have received a copy of the GNU General Public License and |
| // a copy of the GCC Runtime Library Exception along with this program; |
| // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| // <http://www.gnu.org/licenses/>. |
| |
| |
| #ifndef _GLIBCXX_OS_DEFINES |
| #define _GLIBCXX_OS_DEFINES 1 |
| |
| // System-specific #define, typedefs, corrections, etc, go here. This |
| // file will come before all others. |
| |
| /* Darwin has the pthread routines in libSystem, which every program |
| links to, so there's no need for weak-ness for that. */ |
| #define _GLIBCXX_GTHREAD_USE_WEAK 0 |
| |
| // On Darwin, in order to enable overriding of operator new and delete, the |
| // ABI library exports a weak definition. The static linker will override this |
| // iff a user-provided implementation is given (providing that the user |
| // implementation is not itself a weak definition). |
| #define _GLIBCXX_WEAK_DEFINITION __attribute__ ((__weak__)) |
| |
| #if defined (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) \ |
| && (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1080) |
| // Static initializer macro is absent for Darwin < 11 and buggy in Darwin 11, |
| // see libstdc++/51906. Fixed in Darwin 12 (OS X 10.8). |
| #define _GTHREAD_USE_RECURSIVE_MUTEX_INIT_FUNC |
| #endif |
| |
| // Configure checks for nanosleep fail on Darwin, but nanosleep and |
| // sched_yield are always available, so use them. |
| #define _GLIBCXX_USE_NANOSLEEP 1 |
| #define _GLIBCXX_USE_SCHED_YIELD 1 |
| |
| // No support for referencing weak symbols without a definition. |
| #define _GLIBCXX_USE_WEAK_REF 0 |
| |
| // read(2) can return EINVAL for n >= INT_MAX. |
| #define _GLIBCXX_MAX_READ_SIZE (__INT_MAX__ - 1) |
| |
| #endif |
