| /* |
| * Copyright (C) 2011 Apple Inc. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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. |
| * |
| * This file handles shared library symbol export decorations. It is recommended |
| * that all WebKit projects use these definitions so that symbol exports work |
| * properly on all platforms and compilers that WebKit builds under. |
| */ |
| |
| #pragma once |
| |
| #include <wtf/Platform.h> |
| |
| // Different platforms have different defaults for symbol visibility. Usually |
| // the compiler and the linker just take care of it. However for references to |
| // runtime routines from JIT stubs, it matters to be able to declare a symbol as |
| // being local to the target being generated, and thus not subject to (e.g.) ELF |
| // symbol interposition rules. |
| |
| #if USE(DECLSPEC_ATTRIBUTE) |
| #define HAVE_INTERNAL_VISIBILITY 1 |
| #define WTF_INTERNAL |
| #elif USE(VISIBILITY_ATTRIBUTE) |
| #define HAVE_INTERNAL_VISIBILITY 1 |
| #define WTF_INTERNAL __attribute__((visibility("hidden"))) |
| #else |
| #define WTF_INTERNAL |
| #endif |
| |
| #if USE(DECLSPEC_ATTRIBUTE) |
| #define WTF_EXPORT_DECLARATION __declspec(dllexport) |
| #define WTF_IMPORT_DECLARATION __declspec(dllimport) |
| #elif USE(VISIBILITY_ATTRIBUTE) |
| #define WTF_EXPORT_DECLARATION __attribute__((visibility("default"))) |
| #define WTF_IMPORT_DECLARATION WTF_EXPORT_DECLARATION |
| #else |
| #define WTF_EXPORT_DECLARATION |
| #define WTF_IMPORT_DECLARATION |
| #endif |
| |
| #if !defined(WTF_EXPORT_PRIVATE) |
| |
| #if defined(BUILDING_WTF) || defined(STATICALLY_LINKED_WITH_WTF) |
| #define WTF_EXPORT_PRIVATE WTF_EXPORT_DECLARATION |
| #else |
| #define WTF_EXPORT_PRIVATE WTF_IMPORT_DECLARATION |
| #endif |
| |
| #endif |
