+# The following test taken from the cvs sources
+# If we can't find connect, try looking in -lsocket, -lnsl, and -linet.
+# These need checks to be before checks for any other functions that
+# might be in the same libraries.
+# The Irix 5 libc.so has connect and gethostbyname, but Irix 5 also has
+# libsocket.so which has a bad implementation of gethostbyname (it
+# only looks in /etc/hosts), so we only look for -lsocket if we need
+# it.
+AC_CHECK_FUNCS(connect)
+if test x"$ac_cv_func_connect" = x"no"; then
+ case "$LIBS" in
+ *-lnsl*) ;;
+ *) AC_CHECK_LIB(nsl_s, printf) ;;
+ esac
+ case "$LIBS" in
+ *-lnsl*) ;;
+ *) AC_CHECK_LIB(nsl, printf) ;;
+ esac
+ case "$LIBS" in
+ *-lsocket*) ;;
+ *) AC_CHECK_LIB(socket, connect) ;;
+ esac
+ case "$LIBS" in
+ *-linet*) ;;
+ *) AC_CHECK_LIB(inet, connect) ;;
+ esac
+ dnl We can't just call AC_CHECK_FUNCS(connect) here, because the value
+ dnl has been cached.
+ if test x"$ac_cv_lib_socket_connect" = x"yes" ||
+ test x"$ac_cv_lib_inet_connect" = x"yes"; then
+ # ac_cv_func_connect=yes
+ # don't! it would cause AC_CHECK_FUNC to succeed next time configure is run
+ AC_DEFINE(HAVE_CONNECT, 1, [Define to 1 if you have the "connect" function])
+ fi
+fi
+
+AC_CHECK_LIB(resolv, inet_ntop)
+
+dnl AC_MSG_NOTICE([Looking in libraries: $LIBS])
+
+AC_CHECK_FUNCS(inet_ntop, , [AC_LIBOBJ(lib/inet_ntop)])
+AC_CHECK_FUNCS(inet_pton, , [AC_LIBOBJ(lib/inet_pton)])
+
+# Irix 6.5 has getaddrinfo but not the corresponding defines, so use
+# builtin getaddrinfo if one of the defines don't exist
+AC_CACHE_CHECK([whether defines needed by getaddrinfo exist],
+ rsync_cv_HAVE_GETADDR_DEFINES,[
+ AC_EGREP_CPP(yes, [
+ #include <sys/types.h>
+ #include <sys/socket.h>
+ #include <netdb.h>
+ #ifdef AI_PASSIVE
+ yes
+ #endif],
+ rsync_cv_HAVE_GETADDR_DEFINES=yes,
+ rsync_cv_HAVE_GETADDR_DEFINES=no)])
+if test x"$rsync_cv_HAVE_GETADDR_DEFINES" = x"yes"; then
+ # Tru64 UNIX has getaddrinfo() but has it renamed in libc as
+ # something else so we must include <netdb.h> to get the
+ # redefinition.
+ AC_CHECK_FUNCS(getaddrinfo, ,
+ [AC_MSG_CHECKING([for getaddrinfo by including <netdb.h>])
+ AC_TRY_LINK([#include <sys/types.h>
+ #include <sys/socket.h>
+ #include <netdb.h>],[getaddrinfo(NULL, NULL, NULL, NULL);],
+ [AC_MSG_RESULT([yes])
+ AC_DEFINE(HAVE_GETADDRINFO, 1,
+ [Define to 1 if you have the "getaddrinfo" function.])],
+ [AC_MSG_RESULT([no])
+ AC_LIBOBJ(lib/getaddrinfo)])])
+ AC_CHECK_FUNCS(getnameinfo, , [AC_LIBOBJ(lib/getnameinfo)])
+else
+ AC_LIBOBJ(lib/getaddrinfo)
+ AC_LIBOBJ(lib/getnameinfo)
+fi
+
+AC_CHECK_MEMBER([struct sockaddr.sa_len],
+ [ AC_DEFINE(HAVE_SOCKADDR_LEN, 1, [Do we have sockaddr.sa_len?]) ],
+ [],
+ [
+#include <sys/types.h>
+#include <sys/socket.h>
+])
+
+AC_CHECK_MEMBER([struct sockaddr_in.sin_len],
+ [ AC_DEFINE(HAVE_SOCKADDR_IN_LEN, 1, [Do we have sockaddr_in.sin_len?]) ],
+ [],
+ [
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+])
+
+AC_CHECK_MEMBER([struct sockaddr_un.sun_len],
+ [ AC_DEFINE(HAVE_SOCKADDR_UN_LEN, 1, [Do we have sockaddr_un.sun_len?]) ],
+ [],
+ [
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+])
+
+AC_MSG_CHECKING(struct sockaddr_storage)
+AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/socket.h>],
+[struct sockaddr_storage x;],
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_SOCKADDR_STORAGE, 1,
+ [Define to 1 if you have struct sockaddr_storage.] ),
+ AC_MSG_RESULT(no))
+
+AC_CHECK_MEMBER([struct sockaddr_in6.sin6_scope_id],
+ [ AC_DEFINE(HAVE_SOCKADDR_IN6_SCOPE_ID, 1, [Do we have sockaddr_in6.sin6_scope_id?]) ],
+ [],
+ [
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+])
+
+AC_MSG_CHECKING(struct stat64)
+AC_TRY_COMPILE([#include <stdio.h>
+#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#if HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#if STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# if HAVE_STDLIB_H
+# include <stdlib.h>
+# endif
+#endif
+],[struct stat64 st;],
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_STRUCT_STAT64,1,[Define to 1 if you have struct stat64.]),
+ AC_MSG_RESULT(no))
+
+# if we can't find strcasecmp, look in -lresolv (for Unixware at least)
+#
+AC_CHECK_FUNCS(strcasecmp)
+if test x"$ac_cv_func_strcasecmp" = x"no"; then
+ AC_CHECK_LIB(resolv, strcasecmp)
+fi
+
+dnl At the moment we don't test for a broken memcmp(), because all we
+dnl need to do is test for equality, not comparison, and it seems that
+dnl every platform has a memcmp that can do at least that.
+dnl AC_FUNC_MEMCMP
+