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libs/libpcap-1.9.0/ftmacros.h 4.6 KB
fee2cbd6   amoreau   ajout des librairies
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  /*
   * Copyright (c) 1994, 1995, 1996
   *	The Regents of the University of California.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by the Computer Systems
   *	Engineering Group at Lawrence Berkeley Laboratory.
   * 4. Neither the name of the University nor of the Laboratory may be used
   *    to endorse or promote products derived from this software without
   *    specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #ifndef ftmacros_h
  #define	ftmacros_h
  
  /*
   * Define some feature test macros to make sure that everything we want
   * to be declared gets declared.
   *
   * On some UN*Xes we need to force strtok_r() to be declared.
   * We do *NOT* want to define _POSIX_C_SOURCE, as that tends
   * to make non-POSIX APIs that we use unavailable.
   * XXX - is there no portable way to say "please pollute the
   * namespace to the maximum extent possible"?
   */
  #if defined(sun) || defined(__sun)
    #define __EXTENSIONS__
  
    /*
     * We also need to define _XPG4_2 in order to get
     * the Single UNIX Specification version of
     * recvmsg().
     */
    #define _XPG4_2
  #elif defined(_hpux) || defined(hpux) || defined(__hpux)
    #define _REENTRANT
  
    /*
     * We need this to get the versions of socket functions that
     * use socklen_t.  Define it only if it's not already defined,
     * so we don't get redefiniton warnings.
     */
    #ifndef _XOPEN_SOURCE_EXTENDED
      #define _XOPEN_SOURCE_EXTENDED
    #endif
  
    /*
     * XXX - the list of PA-RISC options for GCC makes it sound as if
     * building code that uses a particular vintage of UNIX API/ABI
     * is complicated:
     *
     *    https://gcc.gnu.org/onlinedocs/gcc/HPPA-Options.html
     *
     * See the description of the -munix flag.
     *
     * We probably want libpcap to work with programs built for any
     * UN*X standard.  I'm not sure whether that's possible and, if
     * it is, what sort of stuff it'd have to do.
     *
     * It might also be a requirement that we build with a special
     * flag to allow the library to be used with threaded code, at
     * least with HP's C compiler; hopefully doing so won't make it
     * *not* work with *un*-threaded code.
     */
  #elif defined(__linux__) || defined(linux) || defined(__linux)
    /*
     * We can't turn _GNU_SOURCE on because some versions of GNU Libc
     * will give the GNU version of strerror_r(), which returns a
     * string pointer and doesn't necessarily fill in the buffer,
     * rather than the standard version of strerror_r(), which
     * returns 0 or an errno and always fills in the buffer.  We
     * require both of the latter behaviors.
     *
     * So we try turning everything else on that we can.  This includes
     * defining _XOPEN_SOURCE as 600, because we want to force crypt()
     * to be declared on systems that use GNU libc, such as most Linux
     * distributions.
     */
    #define _POSIX_C_SOURCE 200809L
    #define _XOPEN_SOURCE 600
  
    /*
     * We turn on both _DEFAULT_SOURCE and _BSD_SOURCE to try to get
     * the BSD u_XXX types, such as u_int and u_short, defined.  We
     * define _DEFAULT_SOURCE first, so that newer versions of GNU libc
     * don't whine about _BSD_SOURCE being deprecated; we still have
     * to define _BSD_SOURCE to handle older versions of GNU libc that
     * don't support _DEFAULT_SOURCE.
     */
    #define _DEFAULT_SOURCE
    #define _BSD_SOURCE
  #endif
  
  #endif