usr/src/lib/libc/port/gen/xpg6.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 /*
  30  * __xpg6 (C99/SUSv3) was first introduced in Solaris 10.
  31  *
  32  * This is the default value that is compiled into libc.
  33  *
  34  * The default setting, _C99SUSv3_mode_OFF, means to retain current
  35  * Solaris behavior which is NOT C99 and SUSv3 compliant.
  36  * This is normal.  libc determines which standard to use based on
  37  * how applications are compiled.  libc at runtime determines which
  38  * behavior to choose based on the value of __xpg6.
  39  * But by default libc retains its original Solaris behavior.
  40  *
  41  * __xpg6 is used to control certain behaviors between the C99 standard,
  42  * the SUSv3 standard, and Solaris.  More explanation in inc/xpg6.h.
  43  * The XPG6 C compiler utility (c99) will add an object file that contains an
  44  * alternate definition for __xpg6.  The symbol interposition provided
  45  * by the linker will allow libc to find that symbol instead.
  46  *
  47  * Possible settings are available and documented in inc/xpg6.h.
  48  */
  49
  50 #include "xpg6.h"
  51
  52 unsigned int __xpg6 = _C99SUSv3_mode_OFF;
  53
  54 unsigned int libc__xpg6;        /* copy of __xpg6, private to libc */