1/*
2 * libjingle
3 * Copyright 2004--2013, Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 *  1. Redistributions of source code must retain the above copyright notice,
9 *     this list of conditions and the following disclaimer.
10 *  2. Redistributions in binary form must reproduce the above copyright notice,
11 *     this list of conditions and the following disclaimer in the documentation
12 *     and/or other materials provided with the distribution.
13 *  3. The name of the author may not be used to endorse or promote products
14 *     derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27#ifndef TALK_MEDIA_WEBRTC_WEBRTCEXPORT_H_
28#define TALK_MEDIA_WEBRTC_WEBRTCEXPORT_H_
29
30// When building for Chrome a part of the code can be built into
31// a shared library, which is controlled by these macros.
32// For all other builds, we always build a static library.
33#if !defined(GOOGLE_CHROME_BUILD) && !defined(CHROMIUM_BUILD)
34#define LIBPEERCONNECTION_LIB 1
35#endif
36
37#ifndef NON_EXPORTED_BASE
38#ifdef WIN32
39
40// MSVC_SUPPRESS_WARNING disables warning |n| for the remainder of the line and
41// for the next line of the source file.
42#define MSVC_SUPPRESS_WARNING(n) __pragma(warning(suppress:n))
43
44// Allows exporting a class that inherits from a non-exported base class.
45// This uses suppress instead of push/pop because the delimiter after the
46// declaration (either "," or "{") has to be placed before the pop macro.
47//
48// Example usage:
49// class EXPORT_API Foo : NON_EXPORTED_BASE(public Bar) {
50//
51// MSVC Compiler warning C4275:
52// non dll-interface class 'Bar' used as base for dll-interface class 'Foo'.
53// Note that this is intended to be used only when no access to the base class'
54// static data is done through derived classes or inline methods. For more info,
55// see http://msdn.microsoft.com/en-us/library/3tdb471s(VS.80).aspx
56#define NON_EXPORTED_BASE(code) MSVC_SUPPRESS_WARNING(4275) \
57                                code
58
59#else  // Not WIN32
60#define NON_EXPORTED_BASE(code) code
61#endif  // WIN32
62#endif  // NON_EXPORTED_BASE
63
64#if defined (LIBPEERCONNECTION_LIB)
65  #define WRME_EXPORT
66#else
67  #if defined(WIN32)
68    #if defined(LIBPEERCONNECTION_IMPLEMENTATION)
69      #define WRME_EXPORT __declspec(dllexport)
70    #else
71      #define WRME_EXPORT __declspec(dllimport)
72    #endif
73  #else // defined(WIN32)
74    #if defined(LIBPEERCONNECTION_IMPLEMENTATION)
75      #define WRME_EXPORT __attribute__((visibility("default")))
76    #else
77      #define WRME_EXPORT
78    #endif
79  #endif
80#endif  // LIBPEERCONNECTION_LIB
81
82#endif  // TALK_MEDIA_WEBRTC_WEBRTCEXPORT_H_
83