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698be2d8 | 1 | # sys_socket_h.m4 serial 25 |
9c9d63b1 | 2 | dnl Copyright (C) 2005-2021 Free Software Foundation, Inc. |
4a626d0a PA |
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]) | |
698be2d8 CB |
98 | |
99 | AC_REQUIRE([AC_C_RESTRICT]) | |
4a626d0a PA |
100 | ]) |
101 | ||
102 | AC_DEFUN([gl_PREREQ_SYS_H_SOCKET], | |
103 | [ | |
104 | dnl Check prerequisites of the <sys/socket.h> replacement. | |
105 | AC_REQUIRE([gl_CHECK_SOCKET_HEADERS]) | |
106 | gl_CHECK_NEXT_HEADERS([sys/socket.h]) | |
107 | if test $ac_cv_header_sys_socket_h = yes; then | |
108 | HAVE_SYS_SOCKET_H=1 | |
4a626d0a PA |
109 | else |
110 | HAVE_SYS_SOCKET_H=0 | |
4a626d0a PA |
111 | fi |
112 | AC_SUBST([HAVE_SYS_SOCKET_H]) | |
c0c3707f | 113 | gl_PREREQ_SYS_H_WS2TCPIP |
4a626d0a PA |
114 | ]) |
115 | ||
116 | # Common prerequisites of the <sys/socket.h> replacement and of the | |
117 | # <sys/select.h> replacement. | |
118 | # Sets and substitutes HAVE_WINSOCK2_H. | |
119 | AC_DEFUN([gl_PREREQ_SYS_H_WINSOCK2], | |
120 | [ | |
121 | m4_ifdef([gl_UNISTD_H_DEFAULTS], [AC_REQUIRE([gl_UNISTD_H_DEFAULTS])]) | |
122 | m4_ifdef([gl_SYS_IOCTL_H_DEFAULTS], [AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])]) | |
123 | AC_CHECK_HEADERS_ONCE([sys/socket.h]) | |
124 | if test $ac_cv_header_sys_socket_h != yes; then | |
125 | dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make | |
126 | dnl the check for those headers unconditional; yet cygwin reports | |
127 | dnl that the headers are present but cannot be compiled (since on | |
128 | dnl cygwin, all socket information should come from sys/socket.h). | |
129 | AC_CHECK_HEADERS([winsock2.h]) | |
130 | fi | |
131 | if test "$ac_cv_header_winsock2_h" = yes; then | |
132 | HAVE_WINSOCK2_H=1 | |
133 | UNISTD_H_HAVE_WINSOCK2_H=1 | |
134 | SYS_IOCTL_H_HAVE_WINSOCK2_H=1 | |
135 | else | |
136 | HAVE_WINSOCK2_H=0 | |
137 | fi | |
138 | AC_SUBST([HAVE_WINSOCK2_H]) | |
139 | ]) | |
140 | ||
c0c3707f CB |
141 | # Common prerequisites of the <sys/socket.h> replacement and of the |
142 | # <arpa/inet.h> replacement. | |
143 | # Sets and substitutes HAVE_WS2TCPIP_H. | |
144 | AC_DEFUN([gl_PREREQ_SYS_H_WS2TCPIP], | |
145 | [ | |
146 | AC_REQUIRE([gl_CHECK_SOCKET_HEADERS]) | |
147 | if test $ac_cv_header_sys_socket_h = yes; then | |
148 | HAVE_WS2TCPIP_H=0 | |
149 | else | |
150 | if test $ac_cv_header_ws2tcpip_h = yes; then | |
151 | HAVE_WS2TCPIP_H=1 | |
152 | else | |
153 | HAVE_WS2TCPIP_H=0 | |
154 | fi | |
155 | fi | |
156 | AC_SUBST([HAVE_WS2TCPIP_H]) | |
157 | ]) | |
158 | ||
4a626d0a PA |
159 | AC_DEFUN([gl_SYS_SOCKET_MODULE_INDICATOR], |
160 | [ | |
161 | dnl Use AC_REQUIRE here, so that the default settings are expanded once only. | |
162 | AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS]) | |
163 | gl_MODULE_INDICATOR_SET_VARIABLE([$1]) | |
164 | dnl Define it also as a C macro, for the benefit of the unit tests. | |
165 | gl_MODULE_INDICATOR_FOR_TESTS([$1]) | |
166 | ]) | |
167 | ||
168 | AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS], | |
169 | [ | |
170 | GNULIB_SOCKET=0; AC_SUBST([GNULIB_SOCKET]) | |
171 | GNULIB_CONNECT=0; AC_SUBST([GNULIB_CONNECT]) | |
172 | GNULIB_ACCEPT=0; AC_SUBST([GNULIB_ACCEPT]) | |
173 | GNULIB_BIND=0; AC_SUBST([GNULIB_BIND]) | |
174 | GNULIB_GETPEERNAME=0; AC_SUBST([GNULIB_GETPEERNAME]) | |
175 | GNULIB_GETSOCKNAME=0; AC_SUBST([GNULIB_GETSOCKNAME]) | |
176 | GNULIB_GETSOCKOPT=0; AC_SUBST([GNULIB_GETSOCKOPT]) | |
177 | GNULIB_LISTEN=0; AC_SUBST([GNULIB_LISTEN]) | |
178 | GNULIB_RECV=0; AC_SUBST([GNULIB_RECV]) | |
179 | GNULIB_SEND=0; AC_SUBST([GNULIB_SEND]) | |
180 | GNULIB_RECVFROM=0; AC_SUBST([GNULIB_RECVFROM]) | |
181 | GNULIB_SENDTO=0; AC_SUBST([GNULIB_SENDTO]) | |
182 | GNULIB_SETSOCKOPT=0; AC_SUBST([GNULIB_SETSOCKOPT]) | |
183 | GNULIB_SHUTDOWN=0; AC_SUBST([GNULIB_SHUTDOWN]) | |
184 | GNULIB_ACCEPT4=0; AC_SUBST([GNULIB_ACCEPT4]) | |
185 | HAVE_STRUCT_SOCKADDR_STORAGE=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE]) | |
186 | HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=1; | |
187 | AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY]) | |
188 | HAVE_SA_FAMILY_T=1; AC_SUBST([HAVE_SA_FAMILY_T]) | |
189 | HAVE_ACCEPT4=1; AC_SUBST([HAVE_ACCEPT4]) | |
190 | ]) |