linking.m

gcc的组件

/* Force linking of classes required by Objective C runtime.
   Copyright (C) 1997 Free Software Foundation, Inc.
   Contributed by Ovidiu Predescu ([e-mail]).

This file is part of GCC.

GCC 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.

GCC 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 GCC; 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, if you link this library with files compiled with
   GCC to produce an executable, this does not 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.  */

#include <objc/Object.h>
#include <objc/NXConstStr.h>

/* Generate references to Object and NXConstanstString classes since they are
   needed by the runtime system to run correctly. */


void __objc_linking (void)
{
  [Object name];
  [NXConstantString name];
}