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1 /* | |
2 * Copyright (C) 2011 Apple Inc. All rights reserved. | |
3 * | |
4 * Redistribution and use in source and binary forms, with or without | |
5 * modification, are permitted provided that the following conditions | |
6 * are met: | |
7 * 1. Redistributions of source code must retain the above copyright | |
8 * notice, this list of conditions and the following disclaimer. | |
9 * 2. Redistributions in binary form must reproduce the above copyright | |
10 * notice, this list of conditions and the following disclaimer in the | |
11 * documentation and/or other materials provided with the distribution. | |
12 * | |
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
24 * | |
25 * This file handles shared library symbol export decorations. It is recommended | |
26 * that all WebKit projects use these definitions so that symbol exports work | |
27 * properly on all platforms and compilers that WebKit builds under. | |
28 */ | |
29 | |
30 #ifndef ExportMacros_h | |
31 #define ExportMacros_h | |
32 | |
33 #include <wtf/Platform.h> | |
34 | |
35 // Different platforms have different defaults for symbol visibility. Usually | |
36 // the compiler and the linker just take care of it. However for references to | |
37 // runtime routines from JIT stubs, it matters to be able to declare a symbol as | |
38 // being local to the target being generated, and thus not subject to (e.g.) ELF | |
39 // symbol interposition rules. | |
40 | |
41 #if defined(__GNUC__) && !defined(__CC_ARM) && !defined(__ARMCC__) | |
42 #define HAVE_INTERNAL_VISIBILITY 1 | |
43 #define WTF_INTERNAL __attribute__((visibility("hidden"))) | |
44 #else | |
45 #define WTF_INTERNAL | |
46 #endif | |
47 | |
48 #if defined(__GNUC__) && !defined(__CC_ARM) && !defined(__ARMCC__) | |
49 | |
50 #define WTF_EXPORT_DECLARATION __attribute__((visibility("default"))) | |
51 #define WTF_IMPORT_DECLARATION WTF_EXPORT_DECLARATION | |
52 #define WTF_HIDDEN_DECLARATION __attribute__((visibility("hidden"))) | |
53 | |
54 #else | |
55 | |
56 #define WTF_EXPORT_DECLARATION | |
57 #define WTF_IMPORT_DECLARATION | |
58 #define WTF_HIDDEN_DECLARATION | |
59 | |
60 #endif | |
61 | |
62 #if defined(BUILDING_WTF) || defined(STATICALLY_LINKED_WITH_WTF) | |
63 #define WTF_IS_LINKED_IN_SAME_BINARY 1 | |
64 #endif | |
65 | |
66 // See note in wtf/Platform.h for more info on EXPORT_MACROS. | |
67 #if USE(EXPORT_MACROS) | |
68 | |
69 #define WTF_EXPORT WTF_EXPORT_DECLARATION | |
70 #define WTF_IMPORT WTF_IMPORT_DECLARATION | |
71 #define WTF_HIDDEN WTF_IMPORT_DECLARATION | |
72 | |
73 // FIXME: When all ports are using the export macros, we should replace | |
74 // WTF_EXPORTDATA with WTF_EXPORT_PRIVATE macros. | |
75 #if defined(WTF_IS_LINKED_IN_SAME_BINARY) | |
76 #define WTF_EXPORTDATA WTF_EXPORT | |
77 #else | |
78 #define WTF_EXPORTDATA WTF_IMPORT | |
79 #endif | |
80 | |
81 #else // !USE(EXPORT_MACROS) | |
82 | |
83 #define WTF_EXPORTDATA | |
84 | |
85 #define WTF_EXPORTCLASS WTF_EXPORTDATA | |
86 | |
87 #define WTF_EXPORT | |
88 #define WTF_IMPORT | |
89 #define WTF_HIDDEN | |
90 | |
91 #endif // USE(EXPORT_MACROS) | |
92 | |
93 // WTF_TESTING (and WEBCORE_TESTING in PlatformExportMacros.h) is used for | |
94 // exporting symbols which are referred from WebCoreTestSupport library. | |
95 // Since the set of APIs is common between ports, | |
96 // it is rather worth annotating inside the code than maintaining port specific
export lists. | |
97 #if USE(EXPORT_MACROS_FOR_TESTING) | |
98 | |
99 #if defined(WTF_IS_LINKED_IN_SAME_BINARY) | |
100 #define WTF_TESTING WTF_EXPORT_DECLARATION | |
101 #else | |
102 #define WTF_TESTING WTF_IMPORT_DECLARATION | |
103 #endif | |
104 | |
105 #else // USE(EXPORT_MACROS_FOR_TESTING) | |
106 | |
107 #define WTF_TESTING | |
108 | |
109 #endif // USE(EXPORT_MACROS_FOR_TESTING) | |
110 | |
111 #if defined(WTF_IS_LINKED_IN_SAME_BINARY) | |
112 #define WTF_EXPORT_PRIVATE WTF_EXPORT | |
113 #else | |
114 #define WTF_EXPORT_PRIVATE WTF_IMPORT | |
115 #endif | |
116 | |
117 #define WTF_EXPORT_PRIVATE_RTTI | |
118 #define WTF_EXPORT_PRIVATE_NO_RTTI WTF_EXPORT_PRIVATE | |
119 | |
120 #define WTF_EXPORT_STRING_API WTF_EXPORT_PRIVATE | |
121 | |
122 #define WTF_EXPORT_HIDDEN WTF_HIDDEN | |
123 | |
124 #define HIDDEN_INLINE WTF_EXPORT_HIDDEN inline | |
125 | |
126 #endif // ExportMacros_h | |
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