1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
# sys_socket_h.m4 serial 28
dnl Copyright (C) 2005-2021 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl From Simon Josefsson.
AC_DEFUN_ONCE([gl_SYS_SOCKET_H],
[
AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS])
AC_REQUIRE([AC_CANONICAL_HOST])
dnl On OSF/1, the functions recv(), send(), recvfrom(), sendto() have
dnl old-style declarations (with return type 'int' instead of 'ssize_t')
dnl unless _POSIX_PII_SOCKET is defined.
case "$host_os" in
osf*)
AC_DEFINE([_POSIX_PII_SOCKET], [1],
[Define to 1 in order to get the POSIX compatible declarations
of socket functions.])
;;
esac
AC_CACHE_CHECK([whether <sys/socket.h> is self-contained],
[gl_cv_header_sys_socket_h_selfcontained],
[
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]], [[]])],
[gl_cv_header_sys_socket_h_selfcontained=yes],
[gl_cv_header_sys_socket_h_selfcontained=no])
])
if test $gl_cv_header_sys_socket_h_selfcontained = yes; then
dnl If the shutdown function exists, <sys/socket.h> should define
dnl SHUT_RD, SHUT_WR, SHUT_RDWR.
AC_CHECK_FUNCS([shutdown])
if test $ac_cv_func_shutdown = yes; then
AC_CACHE_CHECK([whether <sys/socket.h> defines the SHUT_* macros],
[gl_cv_header_sys_socket_h_shut],
[
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <sys/socket.h>]],
[[int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };]])],
[gl_cv_header_sys_socket_h_shut=yes],
[gl_cv_header_sys_socket_h_shut=no])
])
if test $gl_cv_header_sys_socket_h_shut = no; then
SYS_SOCKET_H='sys/socket.h'
fi
fi
fi
# We need to check for ws2tcpip.h now.
gl_PREREQ_SYS_H_SOCKET
AC_CHECK_TYPES([struct sockaddr_storage, sa_family_t],,,[
/* sys/types.h is not needed according to POSIX, but the
sys/socket.h in i386-unknown-freebsd4.10 and
powerpc-apple-darwin5.5 required it. */
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
])
if test $ac_cv_type_struct_sockaddr_storage = no; then
HAVE_STRUCT_SOCKADDR_STORAGE=0
fi
if test $ac_cv_type_sa_family_t = no; then
HAVE_SA_FAMILY_T=0
fi
if test $ac_cv_type_struct_sockaddr_storage != no; then
AC_CHECK_MEMBERS([struct sockaddr_storage.ss_family],
[],
[HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=0],
[#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
])
fi
if test $HAVE_STRUCT_SOCKADDR_STORAGE = 0 || test $HAVE_SA_FAMILY_T = 0 \
|| test $HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = 0; then
SYS_SOCKET_H='sys/socket.h'
fi
gl_PREREQ_SYS_H_WINSOCK2
dnl Check for declarations of anything we want to poison if the
dnl corresponding gnulib module is not in use.
gl_WARN_ON_USE_PREPARE([[
/* Some systems require prerequisite headers. */
#include <sys/types.h>
#include <sys/socket.h>
]], [socket connect accept bind getpeername getsockname getsockopt
listen recv send recvfrom sendto setsockopt shutdown accept4])
AC_REQUIRE([AC_C_RESTRICT])
])
AC_DEFUN([gl_PREREQ_SYS_H_SOCKET],
[
dnl Check prerequisites of the <sys/socket.h> replacement.
AC_REQUIRE([gl_CHECK_SOCKET_HEADERS])
gl_CHECK_NEXT_HEADERS([sys/socket.h])
if test $ac_cv_header_sys_socket_h = yes; then
HAVE_SYS_SOCKET_H=1
else
HAVE_SYS_SOCKET_H=0
fi
AC_SUBST([HAVE_SYS_SOCKET_H])
gl_PREREQ_SYS_H_WS2TCPIP
])
# Common prerequisites of the <sys/socket.h> replacement and of the
# <sys/select.h> replacement.
# Sets and substitutes HAVE_WINSOCK2_H.
AC_DEFUN([gl_PREREQ_SYS_H_WINSOCK2],
[
m4_ifdef([gl_UNISTD_H_DEFAULTS], [AC_REQUIRE([gl_UNISTD_H_DEFAULTS])])
m4_ifdef([gl_SYS_IOCTL_H_DEFAULTS], [AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])])
AC_CHECK_HEADERS_ONCE([sys/socket.h])
if test $ac_cv_header_sys_socket_h != yes; then
dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make
dnl the check for those headers unconditional; yet cygwin reports
dnl that the headers are present but cannot be compiled (since on
dnl cygwin, all socket information should come from sys/socket.h).
AC_CHECK_HEADERS([winsock2.h])
fi
if test "$ac_cv_header_winsock2_h" = yes; then
HAVE_WINSOCK2_H=1
UNISTD_H_HAVE_WINSOCK2_H=1
SYS_IOCTL_H_HAVE_WINSOCK2_H=1
else
HAVE_WINSOCK2_H=0
fi
AC_SUBST([HAVE_WINSOCK2_H])
])
# Common prerequisites of the <sys/socket.h> replacement and of the
# <arpa/inet.h> replacement.
# Sets and substitutes HAVE_WS2TCPIP_H.
AC_DEFUN([gl_PREREQ_SYS_H_WS2TCPIP],
[
AC_REQUIRE([gl_CHECK_SOCKET_HEADERS])
if test $ac_cv_header_sys_socket_h = yes; then
HAVE_WS2TCPIP_H=0
else
if test $ac_cv_header_ws2tcpip_h = yes; then
HAVE_WS2TCPIP_H=1
else
HAVE_WS2TCPIP_H=0
fi
fi
AC_SUBST([HAVE_WS2TCPIP_H])
])
# gl_SYS_SOCKET_MODULE_INDICATOR([modulename])
# sets the shell variable that indicates the presence of the given module
# to a C preprocessor expression that will evaluate to 1.
# This macro invocation must not occur in macros that are AC_REQUIREd.
AC_DEFUN([gl_SYS_SOCKET_MODULE_INDICATOR],
[
dnl Ensure to expand the default settings once only.
gl_SYS_SOCKET_H_REQUIRE_DEFAULTS
gl_MODULE_INDICATOR_SET_VARIABLE([$1])
dnl Define it also as a C macro, for the benefit of the unit tests.
gl_MODULE_INDICATOR_FOR_TESTS([$1])
])
# Initializes the default values for AC_SUBSTed shell variables.
# This macro must not be AC_REQUIREd. It must only be invoked, and only
# outside of macros or in macros that are not AC_REQUIREd.
AC_DEFUN([gl_SYS_SOCKET_H_REQUIRE_DEFAULTS],
[
m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_SOCKET_H_MODULE_INDICATOR_DEFAULTS], [
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SOCKET])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CONNECT])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ACCEPT])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_BIND])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPEERNAME])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETSOCKNAME])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETSOCKOPT])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LISTEN])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RECV])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SEND])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RECVFROM])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SENDTO])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETSOCKOPT])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SHUTDOWN])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ACCEPT4])
])
m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_SOCKET_H_MODULE_INDICATOR_DEFAULTS])
AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS])
])
AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS],
[
HAVE_STRUCT_SOCKADDR_STORAGE=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE])
HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=1;
AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY])
HAVE_SA_FAMILY_T=1; AC_SUBST([HAVE_SA_FAMILY_T])
HAVE_ACCEPT4=1; AC_SUBST([HAVE_ACCEPT4])
])
|
