| 1 | # sockpfaf.m4 serial 10
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| 2 | dnl Copyright (C) 2004, 2006, 2009-2021 Free Software Foundation, Inc.
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| 3 | dnl This file is free software; the Free Software Foundation
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| 4 | dnl gives unlimited permission to copy and/or distribute it,
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| 5 | dnl with or without modifications, as long as this notice is preserved.
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| 6 |
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| 7 | dnl Test for some common socket protocol families (PF_INET, PF_INET6, ...)
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| 8 | dnl and some common address families (AF_INET, AF_INET6, ...).
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| 9 | dnl This test assumes that a system supports an address family if and only if
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| 10 | dnl it supports the corresponding protocol family.
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| 11 |
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| 12 | dnl From Bruno Haible.
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| 13 |
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| 14 | AC_DEFUN([gl_SOCKET_FAMILIES],
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| 15 | [
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| 16 | AC_REQUIRE([gl_SYS_SOCKET_H])
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| 17 | AC_CHECK_HEADERS_ONCE([netinet/in.h])
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| 18 |
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| 19 | AC_CACHE_CHECK([for IPv4 sockets],
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| 20 | [gl_cv_socket_ipv4],
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| 21 | [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
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| 22 | #ifdef HAVE_SYS_SOCKET_H
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| 23 | #include <sys/socket.h>
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| 24 | #endif
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| 25 | #ifdef HAVE_NETINET_IN_H
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| 26 | #include <netinet/in.h>
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| 27 | #endif
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| 28 | #ifdef HAVE_WINSOCK2_H
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| 29 | #include <winsock2.h>
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| 30 | #endif]],
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| 31 | [[int x = AF_INET; struct in_addr y; struct sockaddr_in z;
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| 32 | if (&x && &y && &z) return 0;]])],
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| 33 | gl_cv_socket_ipv4=yes, gl_cv_socket_ipv4=no)])
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| 34 | if test $gl_cv_socket_ipv4 = yes; then
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| 35 | AC_DEFINE([HAVE_IPV4], [1], [Define to 1 if <sys/socket.h> defines AF_INET.])
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| 36 | fi
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| 37 |
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| 38 | AC_CACHE_CHECK([for IPv6 sockets],
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| 39 | [gl_cv_socket_ipv6],
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| 40 | [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
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| 41 | #ifdef HAVE_SYS_SOCKET_H
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| 42 | #include <sys/socket.h>
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| 43 | #endif
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| 44 | #ifdef HAVE_NETINET_IN_H
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| 45 | #include <netinet/in.h>
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| 46 | #endif
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| 47 | #ifdef HAVE_WINSOCK2_H
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| 48 | #include <winsock2.h>
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| 49 | #endif
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| 50 | #ifdef HAVE_WS2TCPIP_H
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| 51 | #include <ws2tcpip.h>
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| 52 | #endif]],
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| 53 | [[int x = AF_INET6; struct in6_addr y; struct sockaddr_in6 z;
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| 54 | if (&x && &y && &z) return 0;]])],
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| 55 | gl_cv_socket_ipv6=yes, gl_cv_socket_ipv6=no)])
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| 56 | if test $gl_cv_socket_ipv6 = yes; then
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| 57 | AC_DEFINE([HAVE_IPV6], [1], [Define to 1 if <sys/socket.h> defines AF_INET6.])
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| 58 | fi
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| 59 | ])
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| 60 |
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| 61 | AC_DEFUN([gl_SOCKET_FAMILY_UNIX],
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| 62 | [
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| 63 | AC_REQUIRE([gl_SYS_SOCKET_H])
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| 64 | AC_CHECK_HEADERS_ONCE([sys/un.h])
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| 65 |
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| 66 | AC_CACHE_CHECK([for UNIX domain sockets],
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| 67 | [gl_cv_socket_unix],
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| 68 | [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
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| 69 | #ifdef HAVE_SYS_SOCKET_H
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| 70 | #include <sys/socket.h>
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| 71 | #endif
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| 72 | #ifdef HAVE_SYS_UN_H
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| 73 | #include <sys/un.h>
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| 74 | #endif
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| 75 | #ifdef HAVE_WINSOCK2_H
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| 76 | #include <winsock2.h>
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| 77 | #endif]],
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| 78 | [[int x = AF_UNIX; struct sockaddr_un y;
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| 79 | if (&x && &y) return 0;]])],
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| 80 | gl_cv_socket_unix=yes, gl_cv_socket_unix=no)])
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| 81 | if test $gl_cv_socket_unix = yes; then
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| 82 | AC_DEFINE([HAVE_UNIXSOCKET], [1], [Define to 1 if <sys/socket.h> defines AF_UNIX.])
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| 83 | fi
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| 84 | ])
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