| 1 | # sys_socket_h.m4 serial 23 |
| 2 | dnl Copyright (C) 2005-2013 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 | ]) |