| Elliott Hughes | 820eced | 2021-08-20 18:00:50 -0700 | [diff] [blame] | 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 |