1 # sys_socket_h.m4 serial 13
2 dnl Copyright (C) 2005-2009 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.
7 dnl From Simon Josefsson.
9 AC_DEFUN([gl_HEADER_SYS_SOCKET],
11 AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS])
12 AC_REQUIRE([AC_C_INLINE])
14 AC_CACHE_CHECK([whether <sys/socket.h> is self-contained],
15 [gl_cv_header_sys_socket_h_selfcontained],
17 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]], [[]])],
18 [gl_cv_header_sys_socket_h_selfcontained=yes],
19 [gl_cv_header_sys_socket_h_selfcontained=no])
21 if test $gl_cv_header_sys_socket_h_selfcontained = yes; then
23 dnl If the shutdown function exists, <sys/socket.h> should define
24 dnl SHUT_RD, SHUT_WR, SHUT_RDWR.
25 AC_CHECK_FUNCS([shutdown])
26 if test $ac_cv_func_shutdown = yes; then
27 AC_CACHE_CHECK([whether <sys/socket.h> defines the SHUT_* macros],
28 [gl_cv_header_sys_socket_h_shut],
31 [AC_LANG_PROGRAM([[#include <sys/socket.h>]],
32 [[int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };]])],
33 [gl_cv_header_sys_socket_h_shut=yes],
34 [gl_cv_header_sys_socket_h_shut=no])
36 if test $gl_cv_header_sys_socket_h_shut = no; then
37 SYS_SOCKET_H='sys/socket.h'
41 SYS_SOCKET_H='sys/socket.h'
43 # We need to check for ws2tcpip.h now.
44 gl_PREREQ_SYS_H_SOCKET
45 AC_CHECK_TYPES([struct sockaddr_storage, sa_family_t],,,[
46 /* sys/types.h is not needed according to POSIX, but the
47 sys/socket.h in i386-unknown-freebsd4.10 and
48 powerpc-apple-darwin5.5 required it. */
49 #include <sys/types.h>
50 #ifdef HAVE_SYS_SOCKET_H
51 #include <sys/socket.h>
53 #ifdef HAVE_WS2TCPIP_H
57 if test $ac_cv_type_struct_sockaddr_storage = no; then
58 HAVE_STRUCT_SOCKADDR_STORAGE=0
59 SYS_SOCKET_H='sys/socket.h'
61 if test $ac_cv_type_sa_family_t = no; then
63 SYS_SOCKET_H='sys/socket.h'
65 if test -n "$SYS_SOCKET_H"; then
66 gl_PREREQ_SYS_H_WINSOCK2
68 AC_SUBST([SYS_SOCKET_H])
71 AC_DEFUN([gl_PREREQ_SYS_H_SOCKET],
73 dnl Check prerequisites of the <sys/socket.h> replacement.
74 gl_CHECK_NEXT_HEADERS([sys/socket.h])
75 if test $ac_cv_header_sys_socket_h = yes; then
80 dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make
81 dnl the check for those headers unconditional; yet cygwin reports
82 dnl that the headers are present but cannot be compiled (since on
83 dnl cygwin, all socket information should come from sys/socket.h).
84 AC_CHECK_HEADERS([ws2tcpip.h])
85 if test $ac_cv_header_ws2tcpip_h = yes; then
91 AC_SUBST([HAVE_SYS_SOCKET_H])
92 AC_SUBST([HAVE_WS2TCPIP_H])
95 # Common prerequisites of the <sys/socket.h> replacement and of the
96 # <sys/select.h> replacement.
97 # Sets and substitutes HAVE_WINSOCK2_H.
98 AC_DEFUN([gl_PREREQ_SYS_H_WINSOCK2],
100 m4_ifdef([gl_UNISTD_H_DEFAULTS], [AC_REQUIRE([gl_UNISTD_H_DEFAULTS])])
101 m4_ifdef([gl_SYS_IOCTL_H_DEFAULTS], [AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])])
102 AC_CHECK_HEADERS_ONCE([sys/socket.h])
103 if test $ac_cv_header_sys_socket_h != yes; then
104 dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make
105 dnl the check for those headers unconditional; yet cygwin reports
106 dnl that the headers are present but cannot be compiled (since on
107 dnl cygwin, all socket information should come from sys/socket.h).
108 AC_CHECK_HEADERS([winsock2.h])
110 if test "$ac_cv_header_winsock2_h" = yes; then
112 UNISTD_H_HAVE_WINSOCK2_H=1
113 SYS_IOCTL_H_HAVE_WINSOCK2_H=1
117 AC_SUBST([HAVE_WINSOCK2_H])
120 AC_DEFUN([gl_SYS_SOCKET_MODULE_INDICATOR],
122 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
123 AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS])
124 GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
127 AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS],
129 GNULIB_SOCKET=0; AC_SUBST([GNULIB_SOCKET])
130 GNULIB_CONNECT=0; AC_SUBST([GNULIB_CONNECT])
131 GNULIB_ACCEPT=0; AC_SUBST([GNULIB_ACCEPT])
132 GNULIB_BIND=0; AC_SUBST([GNULIB_BIND])
133 GNULIB_GETPEERNAME=0; AC_SUBST([GNULIB_GETPEERNAME])
134 GNULIB_GETSOCKNAME=0; AC_SUBST([GNULIB_GETSOCKNAME])
135 GNULIB_GETSOCKOPT=0; AC_SUBST([GNULIB_GETSOCKOPT])
136 GNULIB_LISTEN=0; AC_SUBST([GNULIB_LISTEN])
137 GNULIB_RECV=0; AC_SUBST([GNULIB_RECV])
138 GNULIB_SEND=0; AC_SUBST([GNULIB_SEND])
139 GNULIB_RECVFROM=0; AC_SUBST([GNULIB_RECVFROM])
140 GNULIB_SENDTO=0; AC_SUBST([GNULIB_SENDTO])
141 GNULIB_SETSOCKOPT=0; AC_SUBST([GNULIB_SETSOCKOPT])
142 GNULIB_SHUTDOWN=0; AC_SUBST([GNULIB_SHUTDOWN])
143 GNULIB_ACCEPT4=0; AC_SUBST([GNULIB_ACCEPT4])
144 HAVE_STRUCT_SOCKADDR_STORAGE=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE])
145 HAVE_SA_FAMILY_T=1; AC_SUBST([HAVE_SA_FAMILY_T])
146 HAVE_ACCEPT4=1; AC_SUBST([HAVE_ACCEPT4])