--- a/media/webrtc/signaling/src/sipcc/core/sdp/sdp_os_defs.h
+++ b/media/webrtc/signaling/src/sipcc/core/sdp/sdp_os_defs.h
@@ -22,12 +22,13 @@ typedef uint8_t    u8;
 typedef uint16_t   u16;
 typedef uint16_t   uint16;
 typedef uint32_t   u32;
 typedef uint32_t   uint32;
 typedef int32_t    int32;
 typedef int16_t    int16;
 typedef unsigned short ushort;
 typedef unsigned long  ulong;
+#ifndef __GNUC_STDC_INLINE__
 #define inline
-
+#endif
 
 #endif /* _SDP_OS_DEFS_H_ */