| Index: webrtc/base/objc/RTCMacros.h
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| diff --git a/webrtc/base/objc/RTCMacros.h b/webrtc/base/objc/RTCMacros.h
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| index 4979a2b87f5f9a0ef9508b344ca816de1a11b6e2..f9f15c37d3943d9d5833f8c0d1f4fd2de4390aab 100644
 | 
| --- a/webrtc/base/objc/RTCMacros.h
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| +++ b/webrtc/base/objc/RTCMacros.h
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| @@ -11,10 +11,12 @@
 | 
|  #ifndef WEBRTC_BASE_OBJC_RTC_MACROS_H_
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|  #define WEBRTC_BASE_OBJC_RTC_MACROS_H_
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|  
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| +#define RTC_EXPORT __attribute__((visibility("default")))
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| +
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|  #if defined(__cplusplus)
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| -#define RTC_EXPORT extern "C"
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| +#define RTC_EXTERN extern "C" RTC_EXPORT
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|  #else
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| -#define RTC_EXPORT extern
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| +#define RTC_EXTERN extern RTC_EXPORT
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|  #endif
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|  
 | 
|  #ifdef __OBJC__
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| 
 |