]>
Commit | Line | Data |
---|---|---|
dc6c21da TT |
1 | # sys_socket_h.m4 serial 29 |
2 | dnl Copyright (C) 2005-2022 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 | ||
dc6c21da | 9 | AC_DEFUN_ONCE([gl_SYS_SOCKET_H], |
4a626d0a PA |
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 | ||
dc6c21da | 25 | GL_GENERATE_SYS_SOCKET_H=false |
4a626d0a PA |
26 | AC_CACHE_CHECK([whether <sys/socket.h> is self-contained], |
27 | [gl_cv_header_sys_socket_h_selfcontained], | |
28 | [ | |
29 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]], [[]])], | |
30 | [gl_cv_header_sys_socket_h_selfcontained=yes], | |
31 | [gl_cv_header_sys_socket_h_selfcontained=no]) | |
32 | ]) | |
33 | if test $gl_cv_header_sys_socket_h_selfcontained = yes; then | |
34 | dnl If the shutdown function exists, <sys/socket.h> should define | |
35 | dnl SHUT_RD, SHUT_WR, SHUT_RDWR. | |
36 | AC_CHECK_FUNCS([shutdown]) | |
37 | if test $ac_cv_func_shutdown = yes; then | |
38 | AC_CACHE_CHECK([whether <sys/socket.h> defines the SHUT_* macros], | |
39 | [gl_cv_header_sys_socket_h_shut], | |
40 | [ | |
41 | AC_COMPILE_IFELSE( | |
42 | [AC_LANG_PROGRAM([[#include <sys/socket.h>]], | |
43 | [[int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };]])], | |
44 | [gl_cv_header_sys_socket_h_shut=yes], | |
45 | [gl_cv_header_sys_socket_h_shut=no]) | |
46 | ]) | |
47 | if test $gl_cv_header_sys_socket_h_shut = no; then | |
dc6c21da | 48 | GL_GENERATE_SYS_SOCKET_H=true |
4a626d0a PA |
49 | fi |
50 | fi | |
51 | fi | |
52 | # We need to check for ws2tcpip.h now. | |
53 | gl_PREREQ_SYS_H_SOCKET | |
54 | AC_CHECK_TYPES([struct sockaddr_storage, sa_family_t],,,[ | |
55 | /* sys/types.h is not needed according to POSIX, but the | |
56 | sys/socket.h in i386-unknown-freebsd4.10 and | |
57 | powerpc-apple-darwin5.5 required it. */ | |
58 | #include <sys/types.h> | |
59 | #ifdef HAVE_SYS_SOCKET_H | |
60 | #include <sys/socket.h> | |
61 | #endif | |
62 | #ifdef HAVE_WS2TCPIP_H | |
63 | #include <ws2tcpip.h> | |
64 | #endif | |
65 | ]) | |
66 | if test $ac_cv_type_struct_sockaddr_storage = no; then | |
67 | HAVE_STRUCT_SOCKADDR_STORAGE=0 | |
68 | fi | |
69 | if test $ac_cv_type_sa_family_t = no; then | |
70 | HAVE_SA_FAMILY_T=0 | |
71 | fi | |
72 | if test $ac_cv_type_struct_sockaddr_storage != no; then | |
73 | AC_CHECK_MEMBERS([struct sockaddr_storage.ss_family], | |
74 | [], | |
75 | [HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=0], | |
76 | [#include <sys/types.h> | |
77 | #ifdef HAVE_SYS_SOCKET_H | |
78 | #include <sys/socket.h> | |
79 | #endif | |
80 | #ifdef HAVE_WS2TCPIP_H | |
81 | #include <ws2tcpip.h> | |
82 | #endif | |
83 | ]) | |
84 | fi | |
85 | if test $HAVE_STRUCT_SOCKADDR_STORAGE = 0 || test $HAVE_SA_FAMILY_T = 0 \ | |
86 | || test $HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = 0; then | |
dc6c21da | 87 | GL_GENERATE_SYS_SOCKET_H=true |
4a626d0a PA |
88 | fi |
89 | gl_PREREQ_SYS_H_WINSOCK2 | |
90 | ||
91 | dnl Check for declarations of anything we want to poison if the | |
92 | dnl corresponding gnulib module is not in use. | |
93 | gl_WARN_ON_USE_PREPARE([[ | |
94 | /* Some systems require prerequisite headers. */ | |
95 | #include <sys/types.h> | |
96 | #include <sys/socket.h> | |
97 | ]], [socket connect accept bind getpeername getsockname getsockopt | |
98 | listen recv send recvfrom sendto setsockopt shutdown accept4]) | |
698be2d8 CB |
99 | |
100 | AC_REQUIRE([AC_C_RESTRICT]) | |
4a626d0a PA |
101 | ]) |
102 | ||
103 | AC_DEFUN([gl_PREREQ_SYS_H_SOCKET], | |
104 | [ | |
105 | dnl Check prerequisites of the <sys/socket.h> replacement. | |
106 | AC_REQUIRE([gl_CHECK_SOCKET_HEADERS]) | |
107 | gl_CHECK_NEXT_HEADERS([sys/socket.h]) | |
108 | if test $ac_cv_header_sys_socket_h = yes; then | |
109 | HAVE_SYS_SOCKET_H=1 | |
4a626d0a PA |
110 | else |
111 | HAVE_SYS_SOCKET_H=0 | |
4a626d0a PA |
112 | fi |
113 | AC_SUBST([HAVE_SYS_SOCKET_H]) | |
c0c3707f | 114 | gl_PREREQ_SYS_H_WS2TCPIP |
4a626d0a PA |
115 | ]) |
116 | ||
117 | # Common prerequisites of the <sys/socket.h> replacement and of the | |
118 | # <sys/select.h> replacement. | |
119 | # Sets and substitutes HAVE_WINSOCK2_H. | |
120 | AC_DEFUN([gl_PREREQ_SYS_H_WINSOCK2], | |
121 | [ | |
122 | m4_ifdef([gl_UNISTD_H_DEFAULTS], [AC_REQUIRE([gl_UNISTD_H_DEFAULTS])]) | |
123 | m4_ifdef([gl_SYS_IOCTL_H_DEFAULTS], [AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])]) | |
124 | AC_CHECK_HEADERS_ONCE([sys/socket.h]) | |
125 | if test $ac_cv_header_sys_socket_h != yes; then | |
126 | dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make | |
127 | dnl the check for those headers unconditional; yet cygwin reports | |
128 | dnl that the headers are present but cannot be compiled (since on | |
129 | dnl cygwin, all socket information should come from sys/socket.h). | |
130 | AC_CHECK_HEADERS([winsock2.h]) | |
131 | fi | |
132 | if test "$ac_cv_header_winsock2_h" = yes; then | |
133 | HAVE_WINSOCK2_H=1 | |
134 | UNISTD_H_HAVE_WINSOCK2_H=1 | |
135 | SYS_IOCTL_H_HAVE_WINSOCK2_H=1 | |
136 | else | |
137 | HAVE_WINSOCK2_H=0 | |
138 | fi | |
139 | AC_SUBST([HAVE_WINSOCK2_H]) | |
140 | ]) | |
141 | ||
c0c3707f CB |
142 | # Common prerequisites of the <sys/socket.h> replacement and of the |
143 | # <arpa/inet.h> replacement. | |
144 | # Sets and substitutes HAVE_WS2TCPIP_H. | |
145 | AC_DEFUN([gl_PREREQ_SYS_H_WS2TCPIP], | |
146 | [ | |
147 | AC_REQUIRE([gl_CHECK_SOCKET_HEADERS]) | |
148 | if test $ac_cv_header_sys_socket_h = yes; then | |
149 | HAVE_WS2TCPIP_H=0 | |
150 | else | |
151 | if test $ac_cv_header_ws2tcpip_h = yes; then | |
152 | HAVE_WS2TCPIP_H=1 | |
153 | else | |
154 | HAVE_WS2TCPIP_H=0 | |
155 | fi | |
156 | fi | |
157 | AC_SUBST([HAVE_WS2TCPIP_H]) | |
158 | ]) | |
159 | ||
dc6c21da TT |
160 | # gl_SYS_SOCKET_MODULE_INDICATOR([modulename]) |
161 | # sets the shell variable that indicates the presence of the given module | |
162 | # to a C preprocessor expression that will evaluate to 1. | |
163 | # This macro invocation must not occur in macros that are AC_REQUIREd. | |
4a626d0a PA |
164 | AC_DEFUN([gl_SYS_SOCKET_MODULE_INDICATOR], |
165 | [ | |
dc6c21da TT |
166 | dnl Ensure to expand the default settings once only. |
167 | gl_SYS_SOCKET_H_REQUIRE_DEFAULTS | |
4a626d0a PA |
168 | gl_MODULE_INDICATOR_SET_VARIABLE([$1]) |
169 | dnl Define it also as a C macro, for the benefit of the unit tests. | |
170 | gl_MODULE_INDICATOR_FOR_TESTS([$1]) | |
171 | ]) | |
172 | ||
dc6c21da TT |
173 | # Initializes the default values for AC_SUBSTed shell variables. |
174 | # This macro must not be AC_REQUIREd. It must only be invoked, and only | |
175 | # outside of macros or in macros that are not AC_REQUIREd. | |
176 | AC_DEFUN([gl_SYS_SOCKET_H_REQUIRE_DEFAULTS], | |
177 | [ | |
178 | m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_SOCKET_H_MODULE_INDICATOR_DEFAULTS], [ | |
179 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SOCKET]) | |
180 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CONNECT]) | |
181 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ACCEPT]) | |
182 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_BIND]) | |
183 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPEERNAME]) | |
184 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETSOCKNAME]) | |
185 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETSOCKOPT]) | |
186 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LISTEN]) | |
187 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RECV]) | |
188 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SEND]) | |
189 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RECVFROM]) | |
190 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SENDTO]) | |
191 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETSOCKOPT]) | |
192 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SHUTDOWN]) | |
193 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ACCEPT4]) | |
194 | ]) | |
195 | m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_SOCKET_H_MODULE_INDICATOR_DEFAULTS]) | |
196 | AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS]) | |
197 | ]) | |
198 | ||
4a626d0a PA |
199 | AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS], |
200 | [ | |
4a626d0a PA |
201 | HAVE_STRUCT_SOCKADDR_STORAGE=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE]) |
202 | HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=1; | |
203 | AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY]) | |
204 | HAVE_SA_FAMILY_T=1; AC_SUBST([HAVE_SA_FAMILY_T]) | |
205 | HAVE_ACCEPT4=1; AC_SUBST([HAVE_ACCEPT4]) | |
206 | ]) |