4.4BSD/usr/src/contrib/gcc-2.3.3/config/xm-svr4.h

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/* Configuration for GNU C-compiler for hosts running System V Release 4
   Copyright (C) 1988 Free Software Foundation, Inc.

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, 675 Mass Ave, Cambridge, MA 02139, USA.  */

#define bcopy(src,dst,len) memcpy ((dst),(src),(len))
#define bzero(dst,len) memset ((dst),0,(len))
#define bcmp(left,right,len) memcmp ((left),(right),(len))

#define rindex strrchr
#define index strchr

#define USG
#define HAVE_VPRINTF

#define POSIX