--- libaitrpc/configure.in	2012/03/29 01:34:16	1.8
+++ libaitrpc/configure.in	2013/07/16 13:04:19	1.19
@@ -1,11 +1,14 @@
 #
 # $Author: misho $
-# $Id: configure.in,v 1.8 2012/03/29 01:34:16 misho Exp $
+# $Id: configure.in,v 1.19 2013/07/16 13:04:19 misho Exp $
 #
-AC_INIT(libaitrpc, 3.1, misho@elwix.org)
+AC_INIT(libaitrpc, 5.3, misho@elwix.org)
 AC_CONFIG_SRCDIR([src/aitrpc.c])
 AC_CONFIG_HEADERS([inc/config.h])
 
+ac_cv_func_malloc_0_nonnull="yes"
+ac_cv_func_realloc_0_nonnull="yes"
+
 # Checks for programs.
 AC_PROG_CC
 AC_PROG_INSTALL
@@ -20,10 +23,9 @@ CFLAGS="-Wall -O2 -fPIC -I/usr/local/include ${CFLAGS}
 LDFLAGS="-L/usr/local/lib ${LDFLAGS}"
 
 # Checks for libraries.
-AC_CHECK_LIB([aitio], [io_arrayInit])
-AC_CHECK_LIB([aitsched], [schedInit])
-AC_CHECK_LIB([aitcrc], [crcFletcher16])
 AC_CHECK_LIB([pthread], [pthread_create])
+AC_CHECK_LIB([elwix], [array_Init])
+AC_CHECK_LIB([aitsched], [schedInit])
 
 # Checks for header files.
 AC_CHECK_HEADERS([arpa/inet.h netdb.h netinet/in.h stdlib.h string.h sys/param.h sys/socket.h unistd.h])
@@ -47,7 +49,7 @@ AC_CHECK_FUNCS([memset select socket strdup strerror])
 AC_CHECK_FUNCS([srandomdev])
 AC_CHECK_FUNCS([crcFletcher16 hash_fnv1])
 AC_CHECK_FUNCS([pthread_yield])
-AC_CHECK_FUNCS([io_arrayInit io_arrayDestroy])
+AC_CHECK_FUNCS([array_Init array_Destroy])
 AC_CHECK_FUNCS([schedInit schedEnd])
 
 DEBUG=no
@@ -65,6 +67,21 @@ AC_ARG_ENABLE(debug,
 				;;
 		esac ],)
 AC_MSG_RESULT($DEBUG)
+
+CLI_RES_ZC=no
+AC_MSG_CHECKING(Client zero-copy return variables)
+AC_ARG_ENABLE(cli-res-zcpy, 
+	[  --enable-cli-res-zcpy   Build library with zero-copy return array from RPC client ], 
+	[ CLI_RES_ZC=$enableval
+	 	case "$enableval" in
+			yes)
+				AC_DEFINE(CLI_RES_ZCOPY,, 
+					  [Build library with zero-copy return array from RPC client])
+				;;
+			*)
+				;;
+		esac ],)
+AC_MSG_RESULT($CLI_RES_ZC)
 
 AC_CONFIG_FILES([Makefile
                  inc/Makefile