extern "C" {
#endif
-#ifdef _GNU_SOURCE
+#include <features.h>
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#define __NEED_size_t
#endif
#define EAI_SYSTEM -11
#define EAI_OVERFLOW -12
-int getaddrinfo (const char *, const char *, const struct addrinfo *, struct addrinfo **);
+int getaddrinfo (const char *__restrict, const char *__restrict, const struct addrinfo *__restrict, struct addrinfo **__restrict);
void freeaddrinfo (struct addrinfo *);
-int getnameinfo (const struct sockaddr *, socklen_t, char *, socklen_t, char *, socklen_t, int);
+int getnameinfo (const struct sockaddr *__restrict, socklen_t, char *__restrict, socklen_t, char *__restrict, socklen_t, int);
const char *gai_strerror(int);
struct protoent *getprotobyname (const char *);
struct protoent *getprotobynumber (int);
-#ifdef _GNU_SOURCE
-const char *hstrerror(int);
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) || defined(_POSIX_SOURCE) \
+ || (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE+0 < 200809L) \
+ || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700)
struct hostent *gethostbyname (const char *);
-int gethostbyname_r(const char *, struct hostent *, char *, size_t, struct hostent **, int *);
-int gethostbyname2_r(const char *, int, struct hostent *, char *, size_t, struct hostent **, int *);
-struct hostent *gethostbyname2(const char *, int);
struct hostent *gethostbyaddr (const void *, socklen_t, int);
-int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *, char *, size_t, struct hostent **, int *);
-int getservbyport_r(int, const char *, struct servent *, char *, size_t, struct servent **);
-int getservbyname_r(const char *, const char *, struct servent *, char *, size_t, struct servent **);
#ifdef __GNUC__
__attribute__((const))
#endif
int *__h_errno_location(void);
#define h_errno (*__h_errno_location())
+#define HOST_NOT_FOUND 1
+#define TRY_AGAIN 2
+#define NO_RECOVERY 3
+#define NO_DATA 4
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+const char *hstrerror(int);
+int gethostbyname_r(const char *, struct hostent *, char *, size_t, struct hostent **, int *);
+int gethostbyname2_r(const char *, int, struct hostent *, char *, size_t, struct hostent **, int *);
+struct hostent *gethostbyname2(const char *, int);
+int gethostbyaddr_r(const void *, socklen_t, int, struct hostent *, char *, size_t, struct hostent **, int *);
+int getservbyport_r(int, const char *, struct servent *, char *, size_t, struct servent **);
+int getservbyname_r(const char *, const char *, struct servent *, char *, size_t, struct servent **);
#define EAI_NODATA -5
#define EAI_ADDRFAMILY -9
#define EAI_INPROGRESS -100
#define EAI_IDN_ENCODE -105
#define NI_MAXHOST 255
#define NI_MAXSERV 32
-#define HOST_NOT_FOUND 1
-#define TRY_AGAIN 2
-#define NO_RECOVERY 3
-#define NO_DATA 4
#endif