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Member "libpcap-1.10.1/./ftmacros.h" (7 Jun 2021, 4762 Bytes) of package /linux/misc/libpcap-1.10.1.tar.gz:


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    1 /*
    2  * Copyright (c) 1994, 1995, 1996
    3  *  The Regents of the University of California.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *  This product includes software developed by the Computer Systems
   16  *  Engineering Group at Lawrence Berkeley Laboratory.
   17  * 4. Neither the name of the University nor of the Laboratory may be used
   18  *    to endorse or promote products derived from this software without
   19  *    specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  */
   33 
   34 #ifndef ftmacros_h
   35 #define ftmacros_h
   36 
   37 /*
   38  * Define some feature test macros to make sure that everything we want
   39  * to be declared gets declared.
   40  *
   41  * On some UN*Xes we need to force strtok_r() to be declared.
   42  * We do *NOT* want to define _POSIX_C_SOURCE, as that tends
   43  * to make non-POSIX APIs that we use unavailable.
   44  * XXX - is there no portable way to say "please pollute the
   45  * namespace to the maximum extent possible"?
   46  */
   47 #if defined(sun) || defined(__sun)
   48   #define __EXTENSIONS__
   49 
   50   /*
   51    * We also need to define _XPG4_2 in order to get
   52    * the Single UNIX Specification version of
   53    * recvmsg().
   54    */
   55   #define _XPG4_2
   56 #elif defined(_hpux) || defined(hpux) || defined(__hpux)
   57   #define _REENTRANT
   58 
   59   /*
   60    * We need this to get the versions of socket functions that
   61    * use socklen_t.  Define it only if it's not already defined,
   62    * so we don't get redefiniton warnings.
   63    */
   64   #ifndef _XOPEN_SOURCE_EXTENDED
   65     #define _XOPEN_SOURCE_EXTENDED
   66   #endif
   67 
   68   /*
   69    * XXX - the list of PA-RISC options for GCC makes it sound as if
   70    * building code that uses a particular vintage of UNIX API/ABI
   71    * is complicated:
   72    *
   73    *    https://gcc.gnu.org/onlinedocs/gcc/HPPA-Options.html
   74    *
   75    * See the description of the -munix flag.
   76    *
   77    * We probably want libpcap to work with programs built for any
   78    * UN*X standard.  I'm not sure whether that's possible and, if
   79    * it is, what sort of stuff it'd have to do.
   80    *
   81    * It might also be a requirement that we build with a special
   82    * flag to allow the library to be used with threaded code, at
   83    * least with HP's C compiler; hopefully doing so won't make it
   84    * *not* work with *un*-threaded code.
   85    */
   86 #else
   87   /*
   88    * Turn on _GNU_SOURCE to get everything GNU libc has to offer,
   89    * including asprintf(), if we're using GNU libc.
   90    *
   91    * Unfortunately, one thing it has to offer is a strerror_r()
   92    * that's not POSIX-compliant, but we deal with that in
   93    * pcap_fmt_errmsg_for_errno().
   94    *
   95    * We don't limit this to, for example, Linux and Cygwin, because
   96    * this might, for example, be GNU/HURD or one of Debian's kFreeBSD
   97    * OSes ("GNU/FreeBSD").
   98    */
   99   #define _GNU_SOURCE
  100 
  101   /*
  102    * We turn on both _DEFAULT_SOURCE and _BSD_SOURCE to try to get
  103    * the BSD u_XXX types, such as u_int and u_short, defined.  We
  104    * define _DEFAULT_SOURCE first, so that newer versions of GNU libc
  105    * don't whine about _BSD_SOURCE being deprecated; we still have
  106    * to define _BSD_SOURCE to handle older versions of GNU libc that
  107    * don't support _DEFAULT_SOURCE.
  108    *
  109    * But, if it's already defined, don't define it, so that we don't
  110    * get a warning of it being redefined if it's defined as, for
  111    * example, 1.
  112    */
  113   #ifndef _DEFAULT_SOURCE
  114     #define _DEFAULT_SOURCE
  115   #endif
  116   /* Avoid redefining _BSD_SOURCE if it's already defined as for ex. 1 */
  117   #ifndef _BSD_SOURCE
  118     #define _BSD_SOURCE
  119   #endif
  120 #endif
  121 
  122 #endif