1 # getaddrinfo.m4 serial 25
2 dnl Copyright (C) 2004-2011 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 AC_DEFUN([gl_GETADDRINFO],
9 AC_REQUIRE([gl_HEADER_SYS_SOCKET])dnl for HAVE_SYS_SOCKET_H, HAVE_WINSOCK2_H
10 AC_REQUIRE([gl_HEADER_NETDB])dnl for HAVE_NETDB_H
11 AC_MSG_NOTICE([checking how to do getaddrinfo, freeaddrinfo and getnameinfo])
13 gai_saved_LIBS="$LIBS"
15 dnl Where is getaddrinfo()?
16 dnl - On Solaris, it is in libsocket.
17 dnl - On Haiku, it is in libnetwork.
18 dnl - On BeOS, it is in libnet.
19 dnl - On native Windows, it is in ws2_32.dll.
20 dnl - Otherwise it is in libc.
21 AC_SEARCH_LIBS([getaddrinfo], [socket network net],
22 [if test "$ac_cv_search_getaddrinfo" != "none required"; then
23 GETADDRINFO_LIB="$ac_cv_search_getaddrinfo"
25 LIBS="$gai_saved_LIBS $GETADDRINFO_LIB"
27 AC_CACHE_CHECK([for getaddrinfo], [gl_cv_func_getaddrinfo], [
28 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
29 #include <sys/types.h>
30 #ifdef HAVE_SYS_SOCKET_H
31 #include <sys/socket.h>
37 ]], [[getaddrinfo("", "", NULL, NULL);]])],
38 [gl_cv_func_getaddrinfo=yes],
39 [gl_cv_func_getaddrinfo=no])])
40 if test $gl_cv_func_getaddrinfo = no; then
41 AC_CACHE_CHECK([for getaddrinfo in ws2tcpip.h and -lws2_32],
42 gl_cv_w32_getaddrinfo, [
43 gl_cv_w32_getaddrinfo=no
46 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
47 #ifdef HAVE_WS2TCPIP_H
51 ]], [[getaddrinfo(NULL, NULL, NULL, NULL);]])], [gl_cv_w32_getaddrinfo=yes])
54 if test "$gl_cv_w32_getaddrinfo" = "yes"; then
55 GETADDRINFO_LIB="-lws2_32"
56 LIBS="$gai_saved_LIBS $GETADDRINFO_LIB"
58 AC_LIBOBJ([getaddrinfo])
62 # We can't use AC_REPLACE_FUNCS here because gai_strerror may be an
63 # inline function declared in ws2tcpip.h, so we need to get that
64 # header included somehow.
65 AC_CHECK_DECLS([gai_strerror, gai_strerrorA], [], [break], [[
66 #include <sys/types.h>
67 #ifdef HAVE_SYS_SOCKET_H
68 #include <sys/socket.h>
73 #ifdef HAVE_WS2TCPIP_H
78 if test $ac_cv_have_decl_gai_strerror = no; then
79 AC_LIBOBJ([gai_strerror])
81 dnl check for correct signature
82 AC_CACHE_CHECK([for gai_strerror with POSIX signature],
83 [gl_cv_func_gai_strerror_posix_signature], [
84 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
85 #include <sys/types.h>
86 #ifdef HAVE_SYS_SOCKET_H
87 #include <sys/socket.h>
92 #ifdef HAVE_WS2TCPIP_H
96 extern const char *gai_strerror(int);]])],
97 [gl_cv_func_gai_strerror_posix_signature=yes],
98 [gl_cv_func_gai_strerror_posix_signature=no])])
99 if test $gl_cv_func_gai_strerror_posix_signature = no; then
100 REPLACE_GAI_STRERROR=1
101 AC_LIBOBJ([gai_strerror])
105 LIBS="$gai_saved_LIBS"
107 gl_PREREQ_GETADDRINFO
109 AC_SUBST([GETADDRINFO_LIB])
112 # Prerequisites of lib/netdb.in.h and lib/getaddrinfo.c.
113 AC_DEFUN([gl_PREREQ_GETADDRINFO], [
114 AC_REQUIRE([gl_NETDB_H_DEFAULTS])
115 AC_REQUIRE([gl_HEADER_SYS_SOCKET])dnl for HAVE_SYS_SOCKET_H, HAVE_WINSOCK2_H
116 AC_REQUIRE([gl_HOSTENT]) dnl for HOSTENT_LIB
117 AC_REQUIRE([gl_SERVENT]) dnl for SERVENT_LIB
118 AC_REQUIRE([gl_FUNC_INET_NTOP]) dnl for INET_NTOP_LIB
119 AC_REQUIRE([AC_C_RESTRICT])
120 AC_REQUIRE([gl_SOCKET_FAMILIES])
121 AC_REQUIRE([gl_HEADER_SYS_SOCKET])
122 AC_REQUIRE([AC_C_INLINE])
123 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
125 dnl Including sys/socket.h is wrong for Windows, but Windows does not
126 dnl have sa_len so the result is correct anyway.
127 AC_CHECK_MEMBERS([struct sockaddr.sa_len], , , [
128 #include <sys/types.h>
129 #include <sys/socket.h>
132 AC_CHECK_HEADERS_ONCE([netinet/in.h])
134 AC_CHECK_DECLS([getaddrinfo, freeaddrinfo, getnameinfo],,,[
135 /* sys/types.h is not needed according to POSIX, but the
136 sys/socket.h in i386-unknown-freebsd4.10 and
137 powerpc-apple-darwin5.5 required it. */
138 #include <sys/types.h>
139 #ifdef HAVE_SYS_SOCKET_H
140 #include <sys/socket.h>
145 #ifdef HAVE_WS2TCPIP_H
146 #include <ws2tcpip.h>
149 if test $ac_cv_have_decl_getaddrinfo = no; then
150 HAVE_DECL_GETADDRINFO=0
152 if test $ac_cv_have_decl_freeaddrinfo = no; then
153 HAVE_DECL_FREEADDRINFO=0
155 if test $ac_cv_have_decl_gai_strerror = no; then
156 HAVE_DECL_GAI_STRERROR=0
158 if test $ac_cv_have_decl_getnameinfo = no; then
159 HAVE_DECL_GETNAMEINFO=0
162 AC_CHECK_TYPES([struct addrinfo],,,[
163 #include <sys/types.h>
164 #ifdef HAVE_SYS_SOCKET_H
165 #include <sys/socket.h>
170 #ifdef HAVE_WS2TCPIP_H
171 #include <ws2tcpip.h>
174 if test $ac_cv_type_struct_addrinfo = no; then
175 HAVE_STRUCT_ADDRINFO=0
178 dnl Append $HOSTENT_LIB to GETADDRINFO_LIB, avoiding gratuitous duplicates.
179 case " $GETADDRINFO_LIB " in
180 *" $HOSTENT_LIB "*) ;;
181 *) GETADDRINFO_LIB="$GETADDRINFO_LIB $HOSTENT_LIB" ;;
184 dnl Append $SERVENT_LIB to GETADDRINFO_LIB, avoiding gratuitous duplicates.
185 case " $GETADDRINFO_LIB " in
186 *" $SERVENT_LIB "*) ;;
187 *) GETADDRINFO_LIB="$GETADDRINFO_LIB $SERVENT_LIB" ;;
190 dnl Append $INET_NTOP_LIB to GETADDRINFO_LIB, avoiding gratuitous duplicates.
191 case " $GETADDRINFO_LIB " in
192 *" $INET_NTOP_LIB "*) ;;
193 *) GETADDRINFO_LIB="$GETADDRINFO_LIB $INET_NTOP_LIB" ;;