Adapted for C++.

ares/ares.h

@@ -37,6 +37,10 @@
   #include <netinet/in.h>
 #endif
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 #define ARES_SUCCESS            0
 
 /* Server error codes (ARES_ENODATA indicates no relevant answer) */
@@ -140,4 +144,8 @@ void ares_free_hostent(struct hostent *host);
 const char *ares_strerror(int code);
 void ares_free_errmem(char *mem);
 
+#ifdef  __cplusplus
+}
+#endif
+
 #endif /* ARES__H */