1 files changed, 47 insertions, 0 deletions
diff --git a/libstdc++/config/os/bsd/darwin/os_defines.h b/libstdc++/config/os/bsd/darwin/os_defines.h
new file mode 100644
index 0000000..f95e587
--- /dev/null
+++ b/libstdc++/config/os/bsd/darwin/os_defines.h
@@ -0,0 +1,47 @@
+// Specific definitions for Darwin -*- C++ -*-
+
+// Copyright (C) 2004 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 2, 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License.  This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
+
+#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