third_party/WebKit/Source/platform/PlatformExport.h

   1 /*
   2  * Copyright (C) 2013 Google 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 are
   6  * met:
   7  *
   8  *     * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *     * Redistributions in binary form must reproduce the above
  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
  14  *     * Neither the name of Google Inc. nor the names of its
  15  * contributors may be used to endorse or promote products derived from
  16  * this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31
  32 #ifndef PlatformExport_h
  33 #define PlatformExport_h
  34
  35 #if !defined(BLINK_PLATFORM_IMPLEMENTATION)
  36 #define BLINK_PLATFORM_IMPLEMENTATION 0
  37 #endif
  38
  39 #if defined(COMPONENT_BUILD)
  40 #if defined(WIN32)
  41 #if BLINK_PLATFORM_IMPLEMENTATION
  42 #define PLATFORM_EXPORT __declspec(dllexport)
  43 #else
  44 #define PLATFORM_EXPORT __declspec(dllimport)
  45 #endif
  46 #else // defined(WIN32)
  47 #define PLATFORM_EXPORT __attribute__((visibility("default")))
  48 #endif
  49 #else // defined(COMPONENT_BUILD)
  50 #define PLATFORM_EXPORT
  51 #endif
  52
  53 #if defined(_MSC_VER)
  54 // MSVC Compiler warning C4275:
  55 // non dll-interface class 'Bar' used as base for dll-interface class 'Foo'.
  56 // Note that this is intended to be used only when no access to the base class'
  57 // static data is done through derived classes or inline methods. For more info,
  58 // see http://msdn.microsoft.com/en-us/library/3tdb471s(VS.80).aspx
  59 //
  60 // This pragma will allow exporting a class that inherits from a non-exported
  61 // base class, anywhere in the Blink platform component. This is only
  62 // a problem when using the MSVC compiler on Windows.
  63 #pragma warning(suppress:4275)
  64 #endif
  65
  66 #endif // PlatformExport_h