1 #ifndef LIBOPERA_EXTERN_C_H_INCLUDED 2 #define LIBOPERA_EXTERN_C_H_INCLUDED 3 4 #ifdef __cplusplus 5 #define EXTERN_C_BEGIN extern "C" { 6 #define EXTERN_C_END } 7 #else 8 #define EXTERN_C_BEGIN 9 #define EXTERN_C_END 10 #endif 11 12 #endif /* LIBOPERA_EXTERN_C_H_INCLUDED */ 13