Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / config / os / bsd / darwin / os_defines.h

diff --git a/libstdc++-v3/config/os/bsd/darwin/os_defines.h b/libstdc++-v3/config/os/bsd/darwin/os_defines.h
new file mode 100644 (file)
index 0000000..ccefeaf
--- /dev/null
+++ b/libstdc++-v3/config/os/bsd/darwin/os_defines.h
@@ -0,0 +1,42 @@
+// Specific definitions for Darwin -*- C++ -*-
+
+// Copyright (C) 2004, 2009 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,
+// GCC makes the definition of these functions weak, relies on the
+// loader to implement weak semantics properly, and uses
+// -flat_namespace to work around the way that it doesn't.
+#define _GLIBCXX_WEAK_DEFINITION __attribute__ ((weak))
+
+#endif