mirror of git://gcc.gnu.org/git/gcc.git
54 lines
2.1 KiB
C++
54 lines
2.1 KiB
C++
// Specific definitions for Darwin -*- C++ -*-
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// Copyright (C) 2004-2016 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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#ifndef _GLIBCXX_OS_DEFINES
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#define _GLIBCXX_OS_DEFINES 1
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// System-specific #define, typedefs, corrections, etc, go here. This
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// file will come before all others.
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/* Darwin has the pthread routines in libSystem, which every program
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links to, so there's no need for weak-ness for that. */
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#define _GLIBCXX_GTHREAD_USE_WEAK 0
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// On Darwin, in order to enable overriding of operator new and delete,
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// GCC makes the definition of these functions weak, relies on the
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// loader to implement weak semantics properly, and uses
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// -flat_namespace to work around the way that it doesn't.
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#define _GLIBCXX_WEAK_DEFINITION __attribute__ ((weak))
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// Static initializer macro is buggy in darwin, see libstdc++/51906
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#define _GTHREAD_USE_RECURSIVE_MUTEX_INIT_FUNC
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// Configure checks for nanosleep fail on Darwin, but nanosleep and
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// sched_yield are always available, so use them.
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#define _GLIBCXX_USE_NANOSLEEP 1
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#define _GLIBCXX_USE_SCHED_YIELD 1
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// No support for referencing weak symbols without a definition.
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#define _GLIBCXX_USE_WEAK_REF 0
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#endif
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