windiss.h

gcc-you can use this code to learn something about gcc, and inquire further into linux,

/* Support for GCC on PowerPC using WindISS simulator.
   Copyright (C) 2002 Free Software Foundation, Inc.
   Contributed by CodeSourcery, LLC. 

This file is part of GNU CC.

GNU CC 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.

GNU CC 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 GNU CC; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#undef TARGET_VERSION
#define TARGET_VERSION fprintf (stderr, " (PowerPC WindISS)");

#undef LIB_DEFAULT_SPEC
#define LIB_DEFAULT_SPEC "%(lib_windiss)"

#undef STARTFILE_DEFAULT_SPEC
#define STARTFILE_DEFAULT_SPEC "%(startfile_windiss)"

#undef ENDFILE_DEFAULT_SPEC
#define ENDFILE_DEFAULT_SPEC "%(endfile_windiss)"

#undef	LINK_START_DEFAULT_SPEC
#define LINK_START_DEFAULT_SPEC "%(link_start_windiss)"

#undef	LINK_OS_DEFAULT_SPEC
#define LINK_OS_DEFAULT_SPEC "%(link_os_windiss)"

#undef CRTSAVRES_DEFAULT_SPEC
#define CRTSAVRES_DEFAULT_SPEC ""

#undef WCHAR_TYPE
#define WCHAR_TYPE "short unsigned int"

#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 16