third_party/talloc/libreplace/libreplace_network.m4 - chromium/src - Git at Google

 AC_DEFUN_ONCE(AC_LIBREPLACE_NETWORK_CHECKS,
 [
 echo "LIBREPLACE_NETWORK_CHECKS: START"

 AC_DEFINE(LIBREPLACE_NETWORK_CHECKS, 1, [LIBREPLACE_NETWORK_CHECKS were used])
 LIBREPLACE_NETWORK_OBJS=""
 LIBREPLACE_NETWORK_LIBS=""

 AC_CHECK_HEADERS(sys/socket.h netinet/in.h netdb.h arpa/inet.h)
 AC_CHECK_HEADERS(netinet/in_systm.h)
 AC_CHECK_HEADERS([netinet/ip.h], [], [],[
 	#include <sys/types.h>
 	#ifdef HAVE_NETINET_IN_H
 	#include <netinet/in.h>
 	#endif
 	#ifdef HAVE_NETINET_IN_SYSTM_H
 	#include <netinet/in_systm.h>
 	#endif
 ])
 AC_CHECK_HEADERS(netinet/tcp.h netinet/in_ip.h)
 AC_CHECK_HEADERS(sys/sockio.h sys/un.h)
 AC_CHECK_HEADERS(sys/uio.h)

 dnl we need to check that net/if.h really can be used, to cope with hpux
 dnl where including it always fails
 AC_CACHE_CHECK([for usable net/if.h],libreplace_cv_USABLE_NET_IF_H,[
 	AC_COMPILE_IFELSE([AC_LANG_SOURCE([
 		AC_INCLUDES_DEFAULT
 		#if HAVE_SYS_SOCKET_H
 		# include <sys/socket.h>
 		#endif
 		#include <net/if.h>
 		int main(void) {return 0;}])],
 		[libreplace_cv_USABLE_NET_IF_H=yes],
 		[libreplace_cv_USABLE_NET_IF_H=no]
 	)
 ])
 if test x"$libreplace_cv_USABLE_NET_IF_H" = x"yes";then
 	AC_DEFINE(HAVE_NET_IF_H, 1, usability of net/if.h)
 fi

 AC_HAVE_TYPE([socklen_t],[#include <sys/socket.h>])
 AC_HAVE_TYPE([sa_family_t],[#include <sys/socket.h>])
 AC_HAVE_TYPE([struct addrinfo], [#include <netdb.h>])
 AC_HAVE_TYPE([struct sockaddr], [#include <sys/socket.h>])
 AC_HAVE_TYPE([struct sockaddr_storage], [
 #include <sys/socket.h>
 #include <sys/types.h>
 #include <netinet/in.h>
 ])
 AC_HAVE_TYPE([struct sockaddr_in6], [
 #include <sys/socket.h>
 #include <sys/types.h>
 #include <netinet/in.h>
 ])

 if test x"$ac_cv_type_struct_sockaddr_storage" = x"yes"; then
 AC_CHECK_MEMBER(struct sockaddr_storage.ss_family,
                 AC_DEFINE(HAVE_SS_FAMILY, 1, [Defined if struct sockaddr_storage has ss_family field]),,
                 [
 #include <sys/socket.h>
 #include <sys/types.h>
 #include <netinet/in.h>
 		])

 if test x"$ac_cv_member_struct_sockaddr_storage_ss_family" != x"yes"; then
 AC_CHECK_MEMBER(struct sockaddr_storage.__ss_family,
                 AC_DEFINE(HAVE___SS_FAMILY, 1, [Defined if struct sockaddr_storage has __ss_family field]),,
                 [
 #include <sys/socket.h>
 #include <sys/types.h>
 #include <netinet/in.h>
 		])
 fi
 fi

 AC_CACHE_CHECK([for sin_len in sock],libreplace_cv_HAVE_SOCK_SIN_LEN,[
 	AC_TRY_COMPILE(
 		[
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 		],[
 struct sockaddr_in sock; sock.sin_len = sizeof(sock);
 		],[
 		libreplace_cv_HAVE_SOCK_SIN_LEN=yes
 		],[
 		libreplace_cv_HAVE_SOCK_SIN_LEN=no
 		])
 ])
 if test x"$libreplace_cv_HAVE_SOCK_SIN_LEN" = x"yes"; then
 	AC_DEFINE(HAVE_SOCK_SIN_LEN,1,[Whether the sockaddr_in struct has a sin_len property])
 fi

 ############################################
 # check for unix domain sockets
 AC_CACHE_CHECK([for unix domain sockets],libreplace_cv_HAVE_UNIXSOCKET,[
 	AC_TRY_COMPILE([
 #include <sys/types.h>
 #include <stdlib.h>
 #include <stddef.h>
 #include <sys/socket.h>
 #include <sys/un.h>
 		],[
 struct sockaddr_un sunaddr;
 sunaddr.sun_family = AF_UNIX;
 		],[
 		libreplace_cv_HAVE_UNIXSOCKET=yes
 		],[
 		libreplace_cv_HAVE_UNIXSOCKET=no
 		])
 ])
 if test x"$libreplace_cv_HAVE_UNIXSOCKET" = x"yes"; then
 	AC_DEFINE(HAVE_UNIXSOCKET,1,[If we need to build with unixscoket support])
 fi

 dnl The following test is roughl taken from the cvs sources.
 dnl
 dnl If we can't find connect, try looking in -lsocket, -lnsl, and -linet.
 dnl The Irix 5 libc.so has connect and gethostbyname, but Irix 5 also has
 dnl libsocket.so which has a bad implementation of gethostbyname (it
 dnl only looks in /etc/hosts), so we only look for -lsocket if we need
 dnl it.
 AC_CHECK_FUNCS(connect)
 if test x"$ac_cv_func_connect" = x"no"; then
 	AC_CHECK_LIB_EXT(nsl_s, LIBREPLACE_NETWORK_LIBS, connect)
 	AC_CHECK_LIB_EXT(nsl, LIBREPLACE_NETWORK_LIBS, connect)
 	AC_CHECK_LIB_EXT(socket, LIBREPLACE_NETWORK_LIBS, connect)
 	AC_CHECK_LIB_EXT(inet, LIBREPLACE_NETWORK_LIBS, connect)
 	dnl We can't just call AC_CHECK_FUNCS(connect) here,
 	dnl because the value has been cached.
 	if test x"$ac_cv_lib_ext_nsl_s_connect" = x"yes" ||
 		test x"$ac_cv_lib_ext_nsl_connect" = x"yes" ||
 		test x"$ac_cv_lib_ext_socket_connect" = x"yes" ||
 		test x"$ac_cv_lib_ext_inet_connect" = x"yes"
 	then
 		AC_DEFINE(HAVE_CONNECT,1,[Whether the system has connect()])
 	fi
 fi

 AC_CHECK_FUNCS(gethostbyname)
 if test x"$ac_cv_func_gethostbyname" = x"no"; then
 	AC_CHECK_LIB_EXT(nsl_s, LIBREPLACE_NETWORK_LIBS, gethostbyname)
 	AC_CHECK_LIB_EXT(nsl, LIBREPLACE_NETWORK_LIBS, gethostbyname)
 	AC_CHECK_LIB_EXT(socket, LIBREPLACE_NETWORK_LIBS, gethostbyname)
 	dnl We can't just call AC_CHECK_FUNCS(gethostbyname) here,
 	dnl because the value has been cached.
 	if test x"$ac_cv_lib_ext_nsl_s_gethostbyname" = x"yes" ||
 		test x"$ac_cv_lib_ext_nsl_gethostbyname" = x"yes" ||
 		test x"$ac_cv_lib_ext_socket_gethostbyname" = x"yes"
 	then
 		AC_DEFINE(HAVE_GETHOSTBYNAME,1,
 			  [Whether the system has gethostbyname()])
 	fi
 fi

 dnl HP-UX has if_nametoindex in -lipv6
 AC_CHECK_FUNCS(if_nametoindex)
 if test x"$ac_cv_func_if_nametoindex" = x"no"; then
 	AC_CHECK_LIB_EXT(ipv6, LIBREPLACE_NETWORK_LIBS, if_nametoindex)
 	dnl We can't just call AC_CHECK_FUNCS(if_nametoindex) here,
 	dnl because the value has been cached.
 	if test x"$ac_cv_lib_ext_ipv6_if_nametoindex" = x"yes"
 	then
 		AC_DEFINE(HAVE_IF_NAMETOINDEX, 1,
 			  [Whether the system has if_nametoindex()])
 	fi
 fi

 # The following tests need LIBS="${LIBREPLACE_NETWORK_LIBS}"
 old_LIBS=$LIBS
 LIBS="${LIBREPLACE_NETWORK_LIBS}"
 libreplace_SAVE_CPPFLAGS="$CPPFLAGS"
 CPPFLAGS="$CPPFLAGS -I$libreplacedir"

 AC_CHECK_FUNCS(socketpair,[],[LIBREPLACE_NETWORK_OBJS="${LIBREPLACE_NETWORK_OBJS} $libreplacedir/socketpair.o"])

 AC_CACHE_CHECK([for broken inet_ntoa],libreplace_cv_REPLACE_INET_NTOA,[
 AC_TRY_RUN([
 #include <stdio.h>
 #include <unistd.h>
 #include <sys/types.h>
 #include <netinet/in.h>
 #ifdef HAVE_ARPA_INET_H
 #include <arpa/inet.h>
 #endif
 main() { struct in_addr ip; ip.s_addr = 0x12345678;
 if (strcmp(inet_ntoa(ip),"18.52.86.120") &&
     strcmp(inet_ntoa(ip),"120.86.52.18")) { exit(0); }
 exit(1);}],
            libreplace_cv_REPLACE_INET_NTOA=yes,libreplace_cv_REPLACE_INET_NTOA=no,libreplace_cv_REPLACE_INET_NTOA=cross)])

 AC_CHECK_FUNCS(inet_ntoa,[],[libreplace_cv_REPLACE_INET_NTOA=yes])
 if test x"$libreplace_cv_REPLACE_INET_NTOA" = x"yes"; then
     AC_DEFINE(REPLACE_INET_NTOA,1,[Whether inet_ntoa should be replaced])
     LIBREPLACE_NETWORK_OBJS="${LIBREPLACE_NETWORK_OBJS} $libreplacedir/inet_ntoa.o"
 fi

 AC_CHECK_FUNCS(inet_aton,[],[LIBREPLACE_NETWORK_OBJS="${LIBREPLACE_NETWORK_OBJS} $libreplacedir/inet_aton.o"])

 AC_CHECK_FUNCS(inet_ntop,[],[LIBREPLACE_NETWORK_OBJS="${LIBREPLACE_NETWORK_OBJS} $libreplacedir/inet_ntop.o"])

 AC_CHECK_FUNCS(inet_pton,[],[LIBREPLACE_NETWORK_OBJS="${LIBREPLACE_NETWORK_OBJS} $libreplacedir/inet_pton.o"])

 dnl test for getaddrinfo/getnameinfo
 AC_CACHE_CHECK([for getaddrinfo],libreplace_cv_HAVE_GETADDRINFO,[
 AC_TRY_LINK([
 #include <sys/types.h>
 #if STDC_HEADERS
 #include <stdlib.h>
 #include <stddef.h>
 #endif
 #include <sys/socket.h>
 #include <netdb.h>],
 [
 struct sockaddr sa;
 struct addrinfo *ai = NULL;
 int ret = getaddrinfo(NULL, NULL, NULL, &ai);
 if (ret != 0) {
 	const char *es = gai_strerror(ret);
 }
 freeaddrinfo(ai);
 ret = getnameinfo(&sa, sizeof(sa),
 		NULL, 0,
 		NULL, 0, 0);

 ],
 libreplace_cv_HAVE_GETADDRINFO=yes,libreplace_cv_HAVE_GETADDRINFO=no)])
 if test x"$libreplace_cv_HAVE_GETADDRINFO" = x"yes"; then
 	AC_DEFINE(HAVE_GETADDRINFO,1,[Whether the system has getaddrinfo])
 	AC_DEFINE(HAVE_GETNAMEINFO,1,[Whether the system has getnameinfo])
 	AC_DEFINE(HAVE_FREEADDRINFO,1,[Whether the system has freeaddrinfo])
 	AC_DEFINE(HAVE_GAI_STRERROR,1,[Whether the system has gai_strerror])
 else
 	LIBREPLACE_NETWORK_OBJS="${LIBREPLACE_NETWORK_OBJS} $libreplacedir/getaddrinfo.o"
 fi

 AC_CHECK_HEADERS([ifaddrs.h])

 dnl Used when getifaddrs is not available
 AC_CHECK_MEMBERS([struct sockaddr.sa_len],
 	 [AC_DEFINE(HAVE_SOCKADDR_SA_LEN, 1, [Whether struct sockaddr has a sa_len member])],
 	 [],
 	 [#include <sys/socket.h>])

 dnl test for getifaddrs and freeifaddrs
 AC_CACHE_CHECK([for getifaddrs and freeifaddrs],libreplace_cv_HAVE_GETIFADDRS,[
 AC_TRY_LINK([
 #include <sys/types.h>
 #if STDC_HEADERS
 #include <stdlib.h>
 #include <stddef.h>
 #endif
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <ifaddrs.h>
 #include <netdb.h>],
 [
 struct ifaddrs *ifp = NULL;
 int ret = getifaddrs (&ifp);
 freeifaddrs(ifp);
 ],
 libreplace_cv_HAVE_GETIFADDRS=yes,libreplace_cv_HAVE_GETIFADDRS=no)])
 if test x"$libreplace_cv_HAVE_GETIFADDRS" = x"yes"; then
     AC_DEFINE(HAVE_GETIFADDRS,1,[Whether the system has getifaddrs])
     AC_DEFINE(HAVE_FREEIFADDRS,1,[Whether the system has freeifaddrs])
 	AC_DEFINE(HAVE_STRUCT_IFADDRS,1,[Whether struct ifaddrs is available])
 fi

 ##################
 # look for a method of finding the list of network interfaces
 iface=no;
 AC_CACHE_CHECK([for iface getifaddrs],libreplace_cv_HAVE_IFACE_GETIFADDRS,[
 AC_TRY_RUN([
 #define HAVE_IFACE_GETIFADDRS 1
 #define NO_CONFIG_H 1
 #define AUTOCONF_TEST 1
 #define SOCKET_WRAPPER_NOT_REPLACE
 #include "$libreplacedir/replace.c"
 #include "$libreplacedir/inet_ntop.c"
 #include "$libreplacedir/snprintf.c"
 #include "$libreplacedir/getifaddrs.c"
 #define getifaddrs_test main
 #include "$libreplacedir/test/getifaddrs.c"],
            libreplace_cv_HAVE_IFACE_GETIFADDRS=yes,libreplace_cv_HAVE_IFACE_GETIFADDRS=no,libreplace_cv_HAVE_IFACE_GETIFADDRS=cross)])
 if test x"$libreplace_cv_HAVE_IFACE_GETIFADDRS" = x"yes"; then
     iface=yes;AC_DEFINE(HAVE_IFACE_GETIFADDRS,1,[Whether iface getifaddrs is available])
 else
 	LIBREPLACE_NETWORK_OBJS="${LIBREPLACE_NETWORK_OBJS} $libreplacedir/getifaddrs.o"
 fi


 if test $iface = no; then
 AC_CACHE_CHECK([for iface AIX],libreplace_cv_HAVE_IFACE_AIX,[
 AC_TRY_RUN([
 #define HAVE_IFACE_AIX 1
 #define NO_CONFIG_H 1
 #define AUTOCONF_TEST 1
 #undef _XOPEN_SOURCE_EXTENDED
 #define SOCKET_WRAPPER_NOT_REPLACE
 #include "$libreplacedir/replace.c"
 #include "$libreplacedir/inet_ntop.c"
 #include "$libreplacedir/snprintf.c"
 #include "$libreplacedir/getifaddrs.c"
 #define getifaddrs_test main
 #include "$libreplacedir/test/getifaddrs.c"],
            libreplace_cv_HAVE_IFACE_AIX=yes,libreplace_cv_HAVE_IFACE_AIX=no,libreplace_cv_HAVE_IFACE_AIX=cross)])
 if test x"$libreplace_cv_HAVE_IFACE_AIX" = x"yes"; then
     iface=yes;AC_DEFINE(HAVE_IFACE_AIX,1,[Whether iface AIX is available])
 fi
 fi


 if test $iface = no; then
 AC_CACHE_CHECK([for iface ifconf],libreplace_cv_HAVE_IFACE_IFCONF,[
 AC_TRY_RUN([
 #define HAVE_IFACE_IFCONF 1
 #define NO_CONFIG_H 1
 #define AUTOCONF_TEST 1
 #define SOCKET_WRAPPER_NOT_REPLACE
 #include "$libreplacedir/replace.c"
 #include "$libreplacedir/inet_ntop.c"
 #include "$libreplacedir/snprintf.c"
 #include "$libreplacedir/getifaddrs.c"
 #define getifaddrs_test main
 #include "$libreplacedir/test/getifaddrs.c"],
            libreplace_cv_HAVE_IFACE_IFCONF=yes,libreplace_cv_HAVE_IFACE_IFCONF=no,libreplace_cv_HAVE_IFACE_IFCONF=cross)])
 if test x"$libreplace_cv_HAVE_IFACE_IFCONF" = x"yes"; then
     iface=yes;AC_DEFINE(HAVE_IFACE_IFCONF,1,[Whether iface ifconf is available])
 fi
 fi

 if test $iface = no; then
 AC_CACHE_CHECK([for iface ifreq],libreplace_cv_HAVE_IFACE_IFREQ,[
 AC_TRY_RUN([
 #define HAVE_IFACE_IFREQ 1
 #define NO_CONFIG_H 1
 #define AUTOCONF_TEST 1
 #define SOCKET_WRAPPER_NOT_REPLACE
 #include "$libreplacedir/replace.c"
 #include "$libreplacedir/inet_ntop.c"
 #include "$libreplacedir/snprintf.c"
 #include "$libreplacedir/getifaddrs.c"
 #define getifaddrs_test main
 #include "$libreplacedir/test/getifaddrs.c"],
            libreplace_cv_HAVE_IFACE_IFREQ=yes,libreplace_cv_HAVE_IFACE_IFREQ=no,libreplace_cv_HAVE_IFACE_IFREQ=cross)])
 if test x"$libreplace_cv_HAVE_IFACE_IFREQ" = x"yes"; then
     iface=yes;AC_DEFINE(HAVE_IFACE_IFREQ,1,[Whether iface ifreq is available])
 fi
 fi

 dnl test for ipv6
 AC_CACHE_CHECK([for ipv6 support],libreplace_cv_HAVE_IPV6,[
 	AC_TRY_LINK([
 #include <stdlib.h> /* for NULL */
 #include <sys/socket.h>
 #include <sys/types.h>
 #include <netdb.h>
 #include <netinet/in.h>
 		],
 		[
 struct sockaddr_storage sa_store;
 struct addrinfo *ai = NULL;
 struct in6_addr in6addr;
 int idx = if_nametoindex("iface1");
 int s = socket(AF_INET6, SOCK_STREAM, 0);
 int ret = getaddrinfo(NULL, NULL, NULL, &ai);
 if (ret != 0) {
 	const char *es = gai_strerror(ret);
 }
 freeaddrinfo(ai);
 		],[
 		libreplace_cv_HAVE_IPV6=yes
 		],[
 		libreplace_cv_HAVE_IPV6=no
 		])
 ])
 if test x"$libreplace_cv_HAVE_IPV6" = x"yes"; then
     AC_DEFINE(HAVE_IPV6,1,[Whether the system has IPv6 support])
 fi

 LIBS=$old_LIBS
 CPPFLAGS="$libreplace_SAVE_CPPFLAGS"

 LIBREPLACEOBJ="${LIBREPLACEOBJ} ${LIBREPLACE_NETWORK_OBJS}"

 echo "LIBREPLACE_NETWORK_CHECKS: END"
 ]) dnl end AC_LIBREPLACE_NETWORK_CHECKS
	AC_DEFUN_ONCE(AC_LIBREPLACE_NETWORK_CHECKS,
	[
	echo "LIBREPLACE_NETWORK_CHECKS: START"

	AC_DEFINE(LIBREPLACE_NETWORK_CHECKS, 1, [LIBREPLACE_NETWORK_CHECKS were used])
	LIBREPLACE_NETWORK_OBJS=""
	LIBREPLACE_NETWORK_LIBS=""

	AC_CHECK_HEADERS(sys/socket.h netinet/in.h netdb.h arpa/inet.h)
	AC_CHECK_HEADERS(netinet/in_systm.h)
	AC_CHECK_HEADERS([netinet/ip.h], [], [],[
	#include <sys/types.h>
	#ifdef HAVE_NETINET_IN_H
	#include <netinet/in.h>
	#endif
	#ifdef HAVE_NETINET_IN_SYSTM_H
	#include <netinet/in_systm.h>
	#endif
	])
	AC_CHECK_HEADERS(netinet/tcp.h netinet/in_ip.h)
	AC_CHECK_HEADERS(sys/sockio.h sys/un.h)
	AC_CHECK_HEADERS(sys/uio.h)

	dnl we need to check that net/if.h really can be used, to cope with hpux
	dnl where including it always fails
	AC_CACHE_CHECK([for usable net/if.h],libreplace_cv_USABLE_NET_IF_H,[
	AC_COMPILE_IFELSE([AC_LANG_SOURCE([
	AC_INCLUDES_DEFAULT
	#if HAVE_SYS_SOCKET_H
	# include <sys/socket.h>
	#endif
	#include <net/if.h>
	int main(void) {return 0;}])],
	[libreplace_cv_USABLE_NET_IF_H=yes],
	[libreplace_cv_USABLE_NET_IF_H=no]
	)
	])
	if test x"$libreplace_cv_USABLE_NET_IF_H" = x"yes";then
	AC_DEFINE(HAVE_NET_IF_H, 1, usability of net/if.h)
	fi

	AC_HAVE_TYPE([socklen_t],[#include <sys/socket.h>])
	AC_HAVE_TYPE([sa_family_t],[#include <sys/socket.h>])
	AC_HAVE_TYPE([struct addrinfo], [#include <netdb.h>])
	AC_HAVE_TYPE([struct sockaddr], [#include <sys/socket.h>])
	AC_HAVE_TYPE([struct sockaddr_storage], [
	#include <sys/socket.h>
	#include <sys/types.h>
	#include <netinet/in.h>
	])
	AC_HAVE_TYPE([struct sockaddr_in6], [
	#include <sys/socket.h>
	#include <sys/types.h>
	#include <netinet/in.h>
	])

	if test x"$ac_cv_type_struct_sockaddr_storage" = x"yes"; then
	AC_CHECK_MEMBER(struct sockaddr_storage.ss_family,
	AC_DEFINE(HAVE_SS_FAMILY, 1, [Defined if struct sockaddr_storage has ss_family field]),,
	[
	#include <sys/socket.h>
	#include <sys/types.h>
	#include <netinet/in.h>
	])

	if test x"$ac_cv_member_struct_sockaddr_storage_ss_family" != x"yes"; then
	AC_CHECK_MEMBER(struct sockaddr_storage.__ss_family,
	AC_DEFINE(HAVE___SS_FAMILY, 1, [Defined if struct sockaddr_storage has __ss_family field]),,
	[
	#include <sys/socket.h>
	#include <sys/types.h>
	#include <netinet/in.h>
	])
	fi
	fi

	AC_CACHE_CHECK([for sin_len in sock],libreplace_cv_HAVE_SOCK_SIN_LEN,[
	AC_TRY_COMPILE(
	[
	#include <sys/types.h>
	#include <sys/socket.h>
	#include <netinet/in.h>
	],[
	struct sockaddr_in sock; sock.sin_len = sizeof(sock);
	],[
	libreplace_cv_HAVE_SOCK_SIN_LEN=yes
	],[
	libreplace_cv_HAVE_SOCK_SIN_LEN=no
	])
	])
	if test x"$libreplace_cv_HAVE_SOCK_SIN_LEN" = x"yes"; then
	AC_DEFINE(HAVE_SOCK_SIN_LEN,1,[Whether the sockaddr_in struct has a sin_len property])
	fi

	############################################
	# check for unix domain sockets
	AC_CACHE_CHECK([for unix domain sockets],libreplace_cv_HAVE_UNIXSOCKET,[
	AC_TRY_COMPILE([
	#include <sys/types.h>
	#include <stdlib.h>
	#include <stddef.h>
	#include <sys/socket.h>
	#include <sys/un.h>
	],[
	struct sockaddr_un sunaddr;
	sunaddr.sun_family = AF_UNIX;
	],[
	libreplace_cv_HAVE_UNIXSOCKET=yes
	],[
	libreplace_cv_HAVE_UNIXSOCKET=no
	])
	])
	if test x"$libreplace_cv_HAVE_UNIXSOCKET" = x"yes"; then
	AC_DEFINE(HAVE_UNIXSOCKET,1,[If we need to build with unixscoket support])
	fi

	dnl The following test is roughl taken from the cvs sources.
	dnl
	dnl If we can't find connect, try looking in -lsocket, -lnsl, and -linet.
	dnl The Irix 5 libc.so has connect and gethostbyname, but Irix 5 also has
	dnl libsocket.so which has a bad implementation of gethostbyname (it
	dnl only looks in /etc/hosts), so we only look for -lsocket if we need
	dnl it.
	AC_CHECK_FUNCS(connect)
	if test x"$ac_cv_func_connect" = x"no"; then
	AC_CHECK_LIB_EXT(nsl_s, LIBREPLACE_NETWORK_LIBS, connect)
	AC_CHECK_LIB_EXT(nsl, LIBREPLACE_NETWORK_LIBS, connect)
	AC_CHECK_LIB_EXT(socket, LIBREPLACE_NETWORK_LIBS, connect)
	AC_CHECK_LIB_EXT(inet, LIBREPLACE_NETWORK_LIBS, connect)
	dnl We can't just call AC_CHECK_FUNCS(connect) here,
	dnl because the value has been cached.
	if test x"$ac_cv_lib_ext_nsl_s_connect" = x"yes" \|\|
	test x"$ac_cv_lib_ext_nsl_connect" = x"yes" \|\|
	test x"$ac_cv_lib_ext_socket_connect" = x"yes" \|\|
	test x"$ac_cv_lib_ext_inet_connect" = x"yes"
	then
	AC_DEFINE(HAVE_CONNECT,1,[Whether the system has connect()])
	fi
	fi

	AC_CHECK_FUNCS(gethostbyname)
	if test x"$ac_cv_func_gethostbyname" = x"no"; then
	AC_CHECK_LIB_EXT(nsl_s, LIBREPLACE_NETWORK_LIBS, gethostbyname)
	AC_CHECK_LIB_EXT(nsl, LIBREPLACE_NETWORK_LIBS, gethostbyname)
	AC_CHECK_LIB_EXT(socket, LIBREPLACE_NETWORK_LIBS, gethostbyname)
	dnl We can't just call AC_CHECK_FUNCS(gethostbyname) here,
	dnl because the value has been cached.
	if test x"$ac_cv_lib_ext_nsl_s_gethostbyname" = x"yes" \|\|
	test x"$ac_cv_lib_ext_nsl_gethostbyname" = x"yes" \|\|
	test x"$ac_cv_lib_ext_socket_gethostbyname" = x"yes"
	then
	AC_DEFINE(HAVE_GETHOSTBYNAME,1,
	[Whether the system has gethostbyname()])
	fi
	fi

	dnl HP-UX has if_nametoindex in -lipv6
	AC_CHECK_FUNCS(if_nametoindex)
	if test x"$ac_cv_func_if_nametoindex" = x"no"; then
	AC_CHECK_LIB_EXT(ipv6, LIBREPLACE_NETWORK_LIBS, if_nametoindex)
	dnl We can't just call AC_CHECK_FUNCS(if_nametoindex) here,
	dnl because the value has been cached.
	if test x"$ac_cv_lib_ext_ipv6_if_nametoindex" = x"yes"
	then
	AC_DEFINE(HAVE_IF_NAMETOINDEX, 1,
	[Whether the system has if_nametoindex()])
	fi
	fi

	# The following tests need LIBS="${LIBREPLACE_NETWORK_LIBS}"
	old_LIBS=$LIBS
	LIBS="${LIBREPLACE_NETWORK_LIBS}"
	libreplace_SAVE_CPPFLAGS="$CPPFLAGS"
	CPPFLAGS="$CPPFLAGS -I$libreplacedir"

	AC_CHECK_FUNCS(socketpair,[],[LIBREPLACE_NETWORK_OBJS="${LIBREPLACE_NETWORK_OBJS} $libreplacedir/socketpair.o"])

	AC_CACHE_CHECK([for broken inet_ntoa],libreplace_cv_REPLACE_INET_NTOA,[
	AC_TRY_RUN([
	#include <stdio.h>
	#include <unistd.h>
	#include <sys/types.h>
	#include <netinet/in.h>
	#ifdef HAVE_ARPA_INET_H
	#include <arpa/inet.h>
	#endif
	main() { struct in_addr ip; ip.s_addr = 0x12345678;
	if (strcmp(inet_ntoa(ip),"18.52.86.120") &&
	strcmp(inet_ntoa(ip),"120.86.52.18")) { exit(0); }
	exit(1);}],
	libreplace_cv_REPLACE_INET_NTOA=yes,libreplace_cv_REPLACE_INET_NTOA=no,libreplace_cv_REPLACE_INET_NTOA=cross)])

	AC_CHECK_FUNCS(inet_ntoa,[],[libreplace_cv_REPLACE_INET_NTOA=yes])
	if test x"$libreplace_cv_REPLACE_INET_NTOA" = x"yes"; then
	AC_DEFINE(REPLACE_INET_NTOA,1,[Whether inet_ntoa should be replaced])
	LIBREPLACE_NETWORK_OBJS="${LIBREPLACE_NETWORK_OBJS} $libreplacedir/inet_ntoa.o"
	fi

	AC_CHECK_FUNCS(inet_aton,[],[LIBREPLACE_NETWORK_OBJS="${LIBREPLACE_NETWORK_OBJS} $libreplacedir/inet_aton.o"])

	AC_CHECK_FUNCS(inet_ntop,[],[LIBREPLACE_NETWORK_OBJS="${LIBREPLACE_NETWORK_OBJS} $libreplacedir/inet_ntop.o"])

	AC_CHECK_FUNCS(inet_pton,[],[LIBREPLACE_NETWORK_OBJS="${LIBREPLACE_NETWORK_OBJS} $libreplacedir/inet_pton.o"])

	dnl test for getaddrinfo/getnameinfo
	AC_CACHE_CHECK([for getaddrinfo],libreplace_cv_HAVE_GETADDRINFO,[
	AC_TRY_LINK([
	#include <sys/types.h>
	#if STDC_HEADERS
	#include <stdlib.h>
	#include <stddef.h>
	#endif
	#include <sys/socket.h>
	#include <netdb.h>],
	[
	struct sockaddr sa;
	struct addrinfo *ai = NULL;
	int ret = getaddrinfo(NULL, NULL, NULL, &ai);
	if (ret != 0) {
	const char *es = gai_strerror(ret);
	}
	freeaddrinfo(ai);
	ret = getnameinfo(&sa, sizeof(sa),
	NULL, 0,
	NULL, 0, 0);

	],
	libreplace_cv_HAVE_GETADDRINFO=yes,libreplace_cv_HAVE_GETADDRINFO=no)])
	if test x"$libreplace_cv_HAVE_GETADDRINFO" = x"yes"; then
	AC_DEFINE(HAVE_GETADDRINFO,1,[Whether the system has getaddrinfo])
	AC_DEFINE(HAVE_GETNAMEINFO,1,[Whether the system has getnameinfo])
	AC_DEFINE(HAVE_FREEADDRINFO,1,[Whether the system has freeaddrinfo])
	AC_DEFINE(HAVE_GAI_STRERROR,1,[Whether the system has gai_strerror])
	else
	LIBREPLACE_NETWORK_OBJS="${LIBREPLACE_NETWORK_OBJS} $libreplacedir/getaddrinfo.o"
	fi

	AC_CHECK_HEADERS([ifaddrs.h])

	dnl Used when getifaddrs is not available
	AC_CHECK_MEMBERS([struct sockaddr.sa_len],
	[AC_DEFINE(HAVE_SOCKADDR_SA_LEN, 1, [Whether struct sockaddr has a sa_len member])],
	[],
	[#include <sys/socket.h>])

	dnl test for getifaddrs and freeifaddrs
	AC_CACHE_CHECK([for getifaddrs and freeifaddrs],libreplace_cv_HAVE_GETIFADDRS,[
	AC_TRY_LINK([
	#include <sys/types.h>
	#if STDC_HEADERS
	#include <stdlib.h>
	#include <stddef.h>
	#endif
	#include <sys/socket.h>
	#include <netinet/in.h>
	#include <arpa/inet.h>
	#include <ifaddrs.h>
	#include <netdb.h>],
	[
	struct ifaddrs *ifp = NULL;
	int ret = getifaddrs (&ifp);
	freeifaddrs(ifp);
	],
	libreplace_cv_HAVE_GETIFADDRS=yes,libreplace_cv_HAVE_GETIFADDRS=no)])
	if test x"$libreplace_cv_HAVE_GETIFADDRS" = x"yes"; then
	AC_DEFINE(HAVE_GETIFADDRS,1,[Whether the system has getifaddrs])
	AC_DEFINE(HAVE_FREEIFADDRS,1,[Whether the system has freeifaddrs])
	AC_DEFINE(HAVE_STRUCT_IFADDRS,1,[Whether struct ifaddrs is available])
	fi

	##################
	# look for a method of finding the list of network interfaces
	iface=no;
	AC_CACHE_CHECK([for iface getifaddrs],libreplace_cv_HAVE_IFACE_GETIFADDRS,[
	AC_TRY_RUN([
	#define HAVE_IFACE_GETIFADDRS 1
	#define NO_CONFIG_H 1
	#define AUTOCONF_TEST 1
	#define SOCKET_WRAPPER_NOT_REPLACE
	#include "$libreplacedir/replace.c"
	#include "$libreplacedir/inet_ntop.c"
	#include "$libreplacedir/snprintf.c"
	#include "$libreplacedir/getifaddrs.c"
	#define getifaddrs_test main
	#include "$libreplacedir/test/getifaddrs.c"],
	libreplace_cv_HAVE_IFACE_GETIFADDRS=yes,libreplace_cv_HAVE_IFACE_GETIFADDRS=no,libreplace_cv_HAVE_IFACE_GETIFADDRS=cross)])
	if test x"$libreplace_cv_HAVE_IFACE_GETIFADDRS" = x"yes"; then
	iface=yes;AC_DEFINE(HAVE_IFACE_GETIFADDRS,1,[Whether iface getifaddrs is available])
	else
	LIBREPLACE_NETWORK_OBJS="${LIBREPLACE_NETWORK_OBJS} $libreplacedir/getifaddrs.o"
	fi


	if test $iface = no; then
	AC_CACHE_CHECK([for iface AIX],libreplace_cv_HAVE_IFACE_AIX,[
	AC_TRY_RUN([
	#define HAVE_IFACE_AIX 1
	#define NO_CONFIG_H 1
	#define AUTOCONF_TEST 1
	#undef _XOPEN_SOURCE_EXTENDED
	#define SOCKET_WRAPPER_NOT_REPLACE
	#include "$libreplacedir/replace.c"
	#include "$libreplacedir/inet_ntop.c"
	#include "$libreplacedir/snprintf.c"
	#include "$libreplacedir/getifaddrs.c"
	#define getifaddrs_test main
	#include "$libreplacedir/test/getifaddrs.c"],
	libreplace_cv_HAVE_IFACE_AIX=yes,libreplace_cv_HAVE_IFACE_AIX=no,libreplace_cv_HAVE_IFACE_AIX=cross)])
	if test x"$libreplace_cv_HAVE_IFACE_AIX" = x"yes"; then
	iface=yes;AC_DEFINE(HAVE_IFACE_AIX,1,[Whether iface AIX is available])
	fi
	fi


	if test $iface = no; then
	AC_CACHE_CHECK([for iface ifconf],libreplace_cv_HAVE_IFACE_IFCONF,[
	AC_TRY_RUN([
	#define HAVE_IFACE_IFCONF 1
	#define NO_CONFIG_H 1
	#define AUTOCONF_TEST 1
	#define SOCKET_WRAPPER_NOT_REPLACE
	#include "$libreplacedir/replace.c"
	#include "$libreplacedir/inet_ntop.c"
	#include "$libreplacedir/snprintf.c"
	#include "$libreplacedir/getifaddrs.c"
	#define getifaddrs_test main
	#include "$libreplacedir/test/getifaddrs.c"],
	libreplace_cv_HAVE_IFACE_IFCONF=yes,libreplace_cv_HAVE_IFACE_IFCONF=no,libreplace_cv_HAVE_IFACE_IFCONF=cross)])
	if test x"$libreplace_cv_HAVE_IFACE_IFCONF" = x"yes"; then
	iface=yes;AC_DEFINE(HAVE_IFACE_IFCONF,1,[Whether iface ifconf is available])
	fi
	fi

	if test $iface = no; then
	AC_CACHE_CHECK([for iface ifreq],libreplace_cv_HAVE_IFACE_IFREQ,[
	AC_TRY_RUN([
	#define HAVE_IFACE_IFREQ 1
	#define NO_CONFIG_H 1
	#define AUTOCONF_TEST 1
	#define SOCKET_WRAPPER_NOT_REPLACE
	#include "$libreplacedir/replace.c"
	#include "$libreplacedir/inet_ntop.c"
	#include "$libreplacedir/snprintf.c"
	#include "$libreplacedir/getifaddrs.c"
	#define getifaddrs_test main
	#include "$libreplacedir/test/getifaddrs.c"],
	libreplace_cv_HAVE_IFACE_IFREQ=yes,libreplace_cv_HAVE_IFACE_IFREQ=no,libreplace_cv_HAVE_IFACE_IFREQ=cross)])
	if test x"$libreplace_cv_HAVE_IFACE_IFREQ" = x"yes"; then
	iface=yes;AC_DEFINE(HAVE_IFACE_IFREQ,1,[Whether iface ifreq is available])
	fi
	fi

	dnl test for ipv6
	AC_CACHE_CHECK([for ipv6 support],libreplace_cv_HAVE_IPV6,[
	AC_TRY_LINK([
	#include <stdlib.h> /* for NULL */
	#include <sys/socket.h>
	#include <sys/types.h>
	#include <netdb.h>
	#include <netinet/in.h>
	],
	[
	struct sockaddr_storage sa_store;
	struct addrinfo *ai = NULL;
	struct in6_addr in6addr;
	int idx = if_nametoindex("iface1");
	int s = socket(AF_INET6, SOCK_STREAM, 0);
	int ret = getaddrinfo(NULL, NULL, NULL, &ai);
	if (ret != 0) {
	const char *es = gai_strerror(ret);
	}
	freeaddrinfo(ai);
	],[
	libreplace_cv_HAVE_IPV6=yes
	],[
	libreplace_cv_HAVE_IPV6=no
	])
	])
	if test x"$libreplace_cv_HAVE_IPV6" = x"yes"; then
	AC_DEFINE(HAVE_IPV6,1,[Whether the system has IPv6 support])
	fi

	LIBS=$old_LIBS
	CPPFLAGS="$libreplace_SAVE_CPPFLAGS"

	LIBREPLACEOBJ="${LIBREPLACEOBJ} ${LIBREPLACE_NETWORK_OBJS}"

	echo "LIBREPLACE_NETWORK_CHECKS: END"
	]) dnl end AC_LIBREPLACE_NETWORK_CHECKS