1 # sys_socket_h.m4 serial 23 2 dnl Copyright (C) 2005-2012 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 From Simon Josefsson. 8 9 AC_DEFUN([gl_HEADER_SYS_SOCKET], 10 [ 11 AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS]) 12 AC_REQUIRE([AC_CANONICAL_HOST]) 13 14 dnl On OSF/1, the functions recv(), send(), recvfrom(), sendto() have 15 dnl old-style declarations (with return type 'int' instead of 'ssize_t') 16 dnl unless _POSIX_PII_SOCKET is defined. 17 case "$host_os" in 18 osf*) 19 AC_DEFINE([_POSIX_PII_SOCKET], [1], 20 [Define to 1 in order to get the POSIX compatible declarations 21 of socket functions.]) 22 ;; 23 esac 24 25 AC_CACHE_CHECK([whether <sys/socket.h> is self-contained], 26 [gl_cv_header_sys_socket_h_selfcontained], 27 [ 28 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]], [[]])], 29 [gl_cv_header_sys_socket_h_selfcontained=yes], 30 [gl_cv_header_sys_socket_h_selfcontained=no]) 31 ]) 32 if test $gl_cv_header_sys_socket_h_selfcontained = yes; then 33 dnl If the shutdown function exists, <sys/socket.h> should define 34 dnl SHUT_RD, SHUT_WR, SHUT_RDWR. 35 AC_CHECK_FUNCS([shutdown]) 36 if test $ac_cv_func_shutdown = yes; then 37 AC_CACHE_CHECK([whether <sys/socket.h> defines the SHUT_* macros], 38 [gl_cv_header_sys_socket_h_shut], 39 [ 40 AC_COMPILE_IFELSE( 41 [AC_LANG_PROGRAM([[#include <sys/socket.h>]], 42 [[int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };]])], 43 [gl_cv_header_sys_socket_h_shut=yes], 44 [gl_cv_header_sys_socket_h_shut=no]) 45 ]) 46 if test $gl_cv_header_sys_socket_h_shut = no; then 47 SYS_SOCKET_H='sys/socket.h' 48 fi 49 fi 50 fi 51 # We need to check for ws2tcpip.h now. 52 gl_PREREQ_SYS_H_SOCKET 53 AC_CHECK_TYPES([struct sockaddr_storage, sa_family_t],,,[ 54 /* sys/types.h is not needed according to POSIX, but the 55 sys/socket.h in i386-unknown-freebsd4.10 and 56 powerpc-apple-darwin5.5 required it. */ 57 #include <sys/types.h> 58 #ifdef HAVE_SYS_SOCKET_H 59 #include <sys/socket.h> 60 #endif 61 #ifdef HAVE_WS2TCPIP_H 62 #include <ws2tcpip.h> 63 #endif 64 ]) 65 if test $ac_cv_type_struct_sockaddr_storage = no; then 66 HAVE_STRUCT_SOCKADDR_STORAGE=0 67 fi 68 if test $ac_cv_type_sa_family_t = no; then 69 HAVE_SA_FAMILY_T=0 70 fi 71 if test $ac_cv_type_struct_sockaddr_storage != no; then 72 AC_CHECK_MEMBERS([struct sockaddr_storage.ss_family], 73 [], 74 [HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=0], 75 [#include <sys/types.h> 76 #ifdef HAVE_SYS_SOCKET_H 77 #include <sys/socket.h> 78 #endif 79 #ifdef HAVE_WS2TCPIP_H 80 #include <ws2tcpip.h> 81 #endif 82 ]) 83 fi 84 if test $HAVE_STRUCT_SOCKADDR_STORAGE = 0 || test $HAVE_SA_FAMILY_T = 0 \ 85 || test $HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = 0; then 86 SYS_SOCKET_H='sys/socket.h' 87 fi 88 gl_PREREQ_SYS_H_WINSOCK2 89 90 dnl Check for declarations of anything we want to poison if the 91 dnl corresponding gnulib module is not in use. 92 gl_WARN_ON_USE_PREPARE([[ 93 /* Some systems require prerequisite headers. */ 94 #include <sys/types.h> 95 #include <sys/socket.h> 96 ]], [socket connect accept bind getpeername getsockname getsockopt 97 listen recv send recvfrom sendto setsockopt shutdown accept4]) 98 ]) 99 100 AC_DEFUN([gl_PREREQ_SYS_H_SOCKET], 101 [ 102 dnl Check prerequisites of the <sys/socket.h> replacement. 103 AC_REQUIRE([gl_CHECK_SOCKET_HEADERS]) 104 gl_CHECK_NEXT_HEADERS([sys/socket.h]) 105 if test $ac_cv_header_sys_socket_h = yes; then 106 HAVE_SYS_SOCKET_H=1 107 HAVE_WS2TCPIP_H=0 108 else 109 HAVE_SYS_SOCKET_H=0 110 if test $ac_cv_header_ws2tcpip_h = yes; then 111 HAVE_WS2TCPIP_H=1 112 else 113 HAVE_WS2TCPIP_H=0 114 fi 115 fi 116 AC_SUBST([HAVE_SYS_SOCKET_H]) 117 AC_SUBST([HAVE_WS2TCPIP_H]) 118 ]) 119 120 # Common prerequisites of the <sys/socket.h> replacement and of the 121 # <sys/select.h> replacement. 122 # Sets and substitutes HAVE_WINSOCK2_H. 123 AC_DEFUN([gl_PREREQ_SYS_H_WINSOCK2], 124 [ 125 m4_ifdef([gl_UNISTD_H_DEFAULTS], [AC_REQUIRE([gl_UNISTD_H_DEFAULTS])]) 126 m4_ifdef([gl_SYS_IOCTL_H_DEFAULTS], [AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])]) 127 AC_CHECK_HEADERS_ONCE([sys/socket.h]) 128 if test $ac_cv_header_sys_socket_h != yes; then 129 dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make 130 dnl the check for those headers unconditional; yet cygwin reports 131 dnl that the headers are present but cannot be compiled (since on 132 dnl cygwin, all socket information should come from sys/socket.h). 133 AC_CHECK_HEADERS([winsock2.h]) 134 fi 135 if test "$ac_cv_header_winsock2_h" = yes; then 136 HAVE_WINSOCK2_H=1 137 UNISTD_H_HAVE_WINSOCK2_H=1 138 SYS_IOCTL_H_HAVE_WINSOCK2_H=1 139 else 140 HAVE_WINSOCK2_H=0 141 fi 142 AC_SUBST([HAVE_WINSOCK2_H]) 143 ]) 144 145 AC_DEFUN([gl_SYS_SOCKET_MODULE_INDICATOR], 146 [ 147 dnl Use AC_REQUIRE here, so that the default settings are expanded once only. 148 AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS]) 149 gl_MODULE_INDICATOR_SET_VARIABLE([$1]) 150 dnl Define it also as a C macro, for the benefit of the unit tests. 151 gl_MODULE_INDICATOR_FOR_TESTS([$1]) 152 ]) 153 154 AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS], 155 [ 156 GNULIB_SOCKET=0; AC_SUBST([GNULIB_SOCKET]) 157 GNULIB_CONNECT=0; AC_SUBST([GNULIB_CONNECT]) 158 GNULIB_ACCEPT=0; AC_SUBST([GNULIB_ACCEPT]) 159 GNULIB_BIND=0; AC_SUBST([GNULIB_BIND]) 160 GNULIB_GETPEERNAME=0; AC_SUBST([GNULIB_GETPEERNAME]) 161 GNULIB_GETSOCKNAME=0; AC_SUBST([GNULIB_GETSOCKNAME]) 162 GNULIB_GETSOCKOPT=0; AC_SUBST([GNULIB_GETSOCKOPT]) 163 GNULIB_LISTEN=0; AC_SUBST([GNULIB_LISTEN]) 164 GNULIB_RECV=0; AC_SUBST([GNULIB_RECV]) 165 GNULIB_SEND=0; AC_SUBST([GNULIB_SEND]) 166 GNULIB_RECVFROM=0; AC_SUBST([GNULIB_RECVFROM]) 167 GNULIB_SENDTO=0; AC_SUBST([GNULIB_SENDTO]) 168 GNULIB_SETSOCKOPT=0; AC_SUBST([GNULIB_SETSOCKOPT]) 169 GNULIB_SHUTDOWN=0; AC_SUBST([GNULIB_SHUTDOWN]) 170 GNULIB_ACCEPT4=0; AC_SUBST([GNULIB_ACCEPT4]) 171 HAVE_STRUCT_SOCKADDR_STORAGE=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE]) 172 HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=1; 173 AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY]) 174 HAVE_SA_FAMILY_T=1; AC_SUBST([HAVE_SA_FAMILY_T]) 175 HAVE_ACCEPT4=1; AC_SUBST([HAVE_ACCEPT4]) 176 ]) 177
