# ifndef OPENSSL_NO_SM2
+# ifdef __cplusplus
+extern "C" {
+# endif
+
# include <openssl/ec.h>
/* The default user id as specified in GM/T 0009-2012 */
int ERR_load_SM2_strings(void);
+# ifdef __cplusplus
+}
+# endif
+
# endif /* OPENSSL_NO_SM2 */
#endif