gnulib/import/m4/sockpfaf.m4

   1 # sockpfaf.m4 serial 9
   2 dnl Copyright (C) 2004, 2006, 2009-2019 Free Software Foundation, Inc.
   3 dnl This file is free software; the Free Software Foundation
   4 dnl gives unlimited permission to copy and/or distribute it,
   5 dnl with or without modifications, as long as this notice is preserved.
   6
   7 dnl Test for some common socket protocol families (PF_INET, PF_INET6, ...)
   8 dnl and some common address families (AF_INET, AF_INET6, ...).
   9 dnl This test assumes that a system supports an address family if and only if
  10 dnl it supports the corresponding protocol family.
  11
  12 dnl From Bruno Haible.
  13
  14 AC_DEFUN([gl_SOCKET_FAMILIES],
  15 [
  16   AC_REQUIRE([gl_HEADER_SYS_SOCKET])
  17   AC_CHECK_HEADERS_ONCE([netinet/in.h])
  18
  19   AC_CACHE_CHECK([for IPv4 sockets],
  20     [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   if test $gl_cv_socket_ipv4 = yes; then
  35     AC_DEFINE([HAVE_IPV4], [1], [Define to 1 if <sys/socket.h> defines AF_INET.])
  36   fi
  37
  38   AC_CACHE_CHECK([for IPv6 sockets],
  39     [gl_cv_socket_ipv6],
  40     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
  41 #ifdef HAVE_SYS_SOCKET_H
  42 #include <sys/socket.h>
  43 #endif
  44 #ifdef HAVE_NETINET_IN_H
  45 #include <netinet/in.h>
  46 #endif
  47 #ifdef HAVE_WINSOCK2_H
  48 #include <winsock2.h>
  49 #endif
  50 #ifdef HAVE_WS2TCPIP_H
  51 #include <ws2tcpip.h>
  52 #endif]],
  53 [[int x = AF_INET6; struct in6_addr y; struct sockaddr_in6 z;
  54  if (&x && &y && &z) return 0;]])],
  55        gl_cv_socket_ipv6=yes, gl_cv_socket_ipv6=no)])
  56   if test $gl_cv_socket_ipv6 = yes; then
  57     AC_DEFINE([HAVE_IPV6], [1], [Define to 1 if <sys/socket.h> defines AF_INET6.])
  58   fi
  59 ])
  60
  61 AC_DEFUN([gl_SOCKET_FAMILY_UNIX],
  62 [
  63   AC_REQUIRE([gl_HEADER_SYS_SOCKET])
  64   AC_CHECK_HEADERS_ONCE([sys/un.h])
  65
  66   AC_CACHE_CHECK([for UNIX domain sockets],
  67     [gl_cv_socket_unix],
  68     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
  69 #ifdef HAVE_SYS_SOCKET_H
  70 #include <sys/socket.h>
  71 #endif
  72 #ifdef HAVE_SYS_UN_H
  73 #include <sys/un.h>
  74 #endif
  75 #ifdef HAVE_WINSOCK2_H
  76 #include <winsock2.h>
  77 #endif]],
  78 [[int x = AF_UNIX; struct sockaddr_un y;
  79  if (&x && &y) return 0;]])],
  80        gl_cv_socket_unix=yes, gl_cv_socket_unix=no)])
  81   if test $gl_cv_socket_unix = yes; then
  82     AC_DEFINE([HAVE_UNIXSOCKET], [1], [Define to 1 if <sys/socket.h> defines AF_UNIX.])
  83   fi
  84 ])