Index: config/amanda/syshacks.m4
===================================================================
--- config/amanda/syshacks.m4	(revision 11278)
+++ config/amanda/syshacks.m4	(working copy)
@@ -25,7 +25,12 @@
 		    ;;
 	*-openbsd*)
 		    ;;
-	*-hp-*)
+	*-hp-hpux*)
+		    # add the proper flags to use the X/Open sockets interface, rather than
+		    # the default (BSD sockets).  See xopen_networking(7)
+		    AMANDA_ADD_LIBS([-lxnet])
+		    AMANDA_ADD_CPPFLAGS([-D_XOPEN_SOURCE  -D_XOPEN_SOURCE_EXTENDED=1])
+
 		    case "$CC" in
 			*gcc*)
 			    AMANDA_ADD_CPPFLAGS([-D__STDC_EXT__])