Annotation of embedaddon/libiconv/srcm4/sys_socket_h.m4, revision 1.1.1.2
1.1.1.2 ! misho 1: # sys_socket_h.m4 serial 23
! 2: dnl Copyright (C) 2005-2019 Free Software Foundation, Inc.
1.1 misho 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: ])
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