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/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */
/*
* Copyright (c) 1993, 1994, 1995, 1996, 1997
* 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 lib_pcap_export_defs_h
#define lib_pcap_export_defs_h
/*
* PCAP_API_DEF must be used when defining *data* exported from
* libpcap. It can be used when defining *functions* exported
* from libpcap, but it doesn't have to be used there. It
* should not be used in declarations in headers.
*
* PCAP_API must be used when *declaring* data or functions
* exported from libpcap; PCAP_API_DEF won't work on all platforms.
*/
/*
* Check whether this is GCC major.minor or a later release, or some
* compiler that claims to be "just like GCC" of that version or a
* later release.
*/
#define IS_AT_LEAST_GNUC_VERSION(major, minor) \
(defined(__GNUC__) && \
(__GNUC__ > (major) || \
(__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))))
#if defined(_WIN32)
#ifdef BUILDING_PCAP
/*
* We're compiling libpcap, so we should export functions in our
* API.
*/
#define PCAP_API_DEF __declspec(dllexport)
#else
#define PCAP_API_DEF __declspec(dllimport)
#endif
#elif defined(MSDOS)
/* XXX - does this need special treatment? */
#define PCAP_API_DEF
#else /* UN*X */
#ifdef BUILDING_PCAP
/*
* We're compiling libpcap, so we should export functions in our API.
* The compiler might be configured not to export functions from a
* shared library by default, so we might have to explicitly mark
* functions as exported.
*/
#if IS_AT_LEAST_GNUC_VERSION(3, 4)
/*
* GCC 3.4 or later, or some compiler asserting compatibility with
* GCC 3.4 or later, so we have __attribute__((visibility()).
*/
#define PCAP_API_DEF __attribute__((visibility("default")))
#elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
/*
* Sun C 5.5 or later, so we have __global.
* (Sun C 5.9 and later also have __attribute__((visibility()),
* but there's no reason to prefer it with Sun C.)
*/
#define PCAP_API_DEF __global
#else
/*
* We don't have anything to say.
*/
#define PCAP_API_DEF
#endif
#else
/*
* We're not building libpcap.
*/
#define PCAP_API_DEF
#endif
#endif /* _WIN32/MSDOS/UN*X */
#define PCAP_API PCAP_API_DEF extern
#endif /* lib_pcap_export_defs_h */
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