1# sockpfaf.m4 serial 8
2dnl Copyright (C) 2004, 2006, 2009-2015 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7dnl Test for some common socket protocol families (PF_INET, PF_INET6, ...)
8dnl and some common address families (AF_INET, AF_INET6, ...).
9dnl This test assumes that a system supports an address family if and only if
10dnl it supports the corresponding protocol family.
11
12dnl From Bruno Haible.
13
14AC_DEFUN([gl_SOCKET_FAMILIES],
15[
16  AC_REQUIRE([gl_HEADER_SYS_SOCKET])
17  AC_CHECK_HEADERS_ONCE([netinet/in.h])
18
19  AC_MSG_CHECKING([for IPv4 sockets])
20  AC_CACHE_VAL([gl_cv_socket_ipv4],
21    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
22#ifdef HAVE_SYS_SOCKET_H
23#include <sys/socket.h>
24#endif
25#ifdef HAVE_NETINET_IN_H
26#include <netinet/in.h>
27#endif
28#ifdef HAVE_WINSOCK2_H
29#include <winsock2.h>
30#endif]],
31[[int x = AF_INET; struct in_addr y; struct sockaddr_in z;
32 if (&x && &y && &z) return 0;]])],
33       gl_cv_socket_ipv4=yes, gl_cv_socket_ipv4=no)])
34  AC_MSG_RESULT([$gl_cv_socket_ipv4])
35  if test $gl_cv_socket_ipv4 = yes; then
36    AC_DEFINE([HAVE_IPV4], [1], [Define to 1 if <sys/socket.h> defines AF_INET.])
37  fi
38
39  AC_MSG_CHECKING([for IPv6 sockets])
40  AC_CACHE_VAL([gl_cv_socket_ipv6],
41    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
42#ifdef HAVE_SYS_SOCKET_H
43#include <sys/socket.h>
44#endif
45#ifdef HAVE_NETINET_IN_H
46#include <netinet/in.h>
47#endif
48#ifdef HAVE_WINSOCK2_H
49#include <winsock2.h>
50#endif
51#ifdef HAVE_WS2TCPIP_H
52#include <ws2tcpip.h>
53#endif]],
54[[int x = AF_INET6; struct in6_addr y; struct sockaddr_in6 z;
55 if (&x && &y && &z) return 0;]])],
56       gl_cv_socket_ipv6=yes, gl_cv_socket_ipv6=no)])
57  AC_MSG_RESULT([$gl_cv_socket_ipv6])
58  if test $gl_cv_socket_ipv6 = yes; then
59    AC_DEFINE([HAVE_IPV6], [1], [Define to 1 if <sys/socket.h> defines AF_INET6.])
60  fi
61])
62
63AC_DEFUN([gl_SOCKET_FAMILY_UNIX],
64[
65  AC_REQUIRE([gl_HEADER_SYS_SOCKET])
66  AC_CHECK_HEADERS_ONCE([sys/un.h])
67
68  AC_MSG_CHECKING([for UNIX domain sockets])
69  AC_CACHE_VAL([gl_cv_socket_unix],
70    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
71#ifdef HAVE_SYS_SOCKET_H
72#include <sys/socket.h>
73#endif
74#ifdef HAVE_SYS_UN_H
75#include <sys/un.h>
76#endif
77#ifdef HAVE_WINSOCK2_H
78#include <winsock2.h>
79#endif]],
80[[int x = AF_UNIX; struct sockaddr_un y;
81 if (&x && &y) return 0;]])],
82       gl_cv_socket_unix=yes, gl_cv_socket_unix=no)])
83  AC_MSG_RESULT([$gl_cv_socket_unix])
84  if test $gl_cv_socket_unix = yes; then
85    AC_DEFINE([HAVE_UNIXSOCKET], [1], [Define to 1 if <sys/socket.h> defines AF_UNIX.])
86  fi
87])
88