109 lines
4.1 KiB
C
109 lines
4.1 KiB
C
/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */
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/*
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* Copyright (c) 1993, 1994, 1995, 1996, 1997
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the Computer Systems
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* Engineering Group at Lawrence Berkeley Laboratory.
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* 4. Neither the name of the University nor of the Laboratory may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lib_pcap_export_defs_h
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#define lib_pcap_export_defs_h
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/*
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* PCAP_API_DEF must be used when defining *data* exported from
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* libpcap. It can be used when defining *functions* exported
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* from libpcap, but it doesn't have to be used there. It
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* should not be used in declarations in headers.
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*
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* PCAP_API must be used when *declaring* data or functions
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* exported from libpcap; PCAP_API_DEF won't work on all platforms.
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*/
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/*
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* Check whether this is GCC major.minor or a later release, or some
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* compiler that claims to be "just like GCC" of that version or a
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* later release.
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*/
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#define IS_AT_LEAST_GNUC_VERSION(major, minor) \
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(defined(__GNUC__) && \
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(__GNUC__ > (major) || \
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(__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))))
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#if defined(_WIN32)
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#ifdef BUILDING_PCAP
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/*
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* We're compiling libpcap, so we should export functions in our
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* API.
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*/
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#define PCAP_API_DEF __declspec(dllexport)
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#else
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#define PCAP_API_DEF __declspec(dllimport)
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#endif
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#elif defined(MSDOS)
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/* XXX - does this need special treatment? */
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#define PCAP_API_DEF
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#else /* UN*X */
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#ifdef BUILDING_PCAP
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/*
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* We're compiling libpcap, so we should export functions in our API.
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* The compiler might be configured not to export functions from a
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* shared library by default, so we might have to explicitly mark
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* functions as exported.
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*/
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#if IS_AT_LEAST_GNUC_VERSION(3, 4)
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/*
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* GCC 3.4 or later, or some compiler asserting compatibility with
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* GCC 3.4 or later, so we have __attribute__((visibility()).
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*/
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#define PCAP_API_DEF __attribute__((visibility("default")))
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#elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
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/*
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* Sun C 5.5 or later, so we have __global.
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* (Sun C 5.9 and later also have __attribute__((visibility()),
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* but there's no reason to prefer it with Sun C.)
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*/
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#define PCAP_API_DEF __global
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#else
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/*
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* We don't have anything to say.
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*/
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#define PCAP_API_DEF
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#endif
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#else
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/*
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* We're not building libpcap.
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*/
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#define PCAP_API_DEF
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#endif
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#endif /* _WIN32/MSDOS/UN*X */
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#define PCAP_API PCAP_API_DEF extern
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#endif /* lib_pcap_export_defs_h */
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