base/base_export.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef BASE_BASE_EXPORT_H_
   6 #define BASE_BASE_EXPORT_H_
   7
   8 #if defined(COMPONENT_BUILD)
   9 #if defined(WIN32)
  10
  11 #if defined(BASE_IMPLEMENTATION)
  12 #define BASE_EXPORT __declspec(dllexport)
  13 #define BASE_EXPORT_PRIVATE __declspec(dllexport)
  14 #else
  15 #define BASE_EXPORT __declspec(dllimport)
  16 #define BASE_EXPORT_PRIVATE __declspec(dllimport)
  17 #endif  // defined(BASE_IMPLEMENTATION)
  18
  19 #else  // defined(WIN32)
  20 #if defined(BASE_IMPLEMENTATION)
  21 #define BASE_EXPORT __attribute__((visibility("default")))
  22 #define BASE_EXPORT_PRIVATE __attribute__((visibility("default")))
  23 #else
  24 #define BASE_EXPORT
  25 #define BASE_EXPORT_PRIVATE
  26 #endif  // defined(BASE_IMPLEMENTATION)
  27 #endif
  28
  29 #else  // defined(COMPONENT_BUILD)
  30 #define BASE_EXPORT
  31 #define BASE_EXPORT_PRIVATE
  32 #endif
  33
  34 #endif  // BASE_BASE_EXPORT_H_