ftmacros.h revision 356341 
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#elif defined(__linux__) || defined(linux) || defined(__linux)
87  /*
88   * Turn on _GNU_SOURCE to get everything GNU libc has to offer,
89   * including asprintf().
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  #define _GNU_SOURCE
96
97  /*
98   * We turn on both _DEFAULT_SOURCE and _BSD_SOURCE to try to get
99   * the BSD u_XXX types, such as u_int and u_short, defined.  We
100   * define _DEFAULT_SOURCE first, so that newer versions of GNU libc
101   * don't whine about _BSD_SOURCE being deprecated; we still have
102   * to define _BSD_SOURCE to handle older versions of GNU libc that
103   * don't support _DEFAULT_SOURCE.
104   */
105  #define _DEFAULT_SOURCE
106  #define _BSD_SOURCE
107#endif
108
109#endif
110