--- libaitsync/configure.in	2012/07/22 22:09:47	1.3
+++ libaitsync/configure.in	2016/08/18 09:42:56	1.8.2.2
@@ -1,11 +1,14 @@
 #
 # $Author: misho $
-# $Id: configure.in,v 1.3 2012/07/22 22:09:47 misho Exp $
+# $Id: configure.in,v 1.8.2.2 2016/08/18 09:42:56 misho Exp $
 #
-AC_INIT(libaitsync, 1.1, misho@aitbg.com)
+AC_INIT(libaitsync, 2.3, misho@elwix.org)
 AC_CONFIG_SRCDIR([src/aitsync.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_RANLIB
@@ -14,14 +17,15 @@ AC_PROG_INSTALL
 AC_CANONICAL_HOST
 AC_CANONICAL_TARGET
 
-AC_CHECK_TOOL(MKDEP, mkdep, no)
+AC_CHECK_TOOL(MKDEP, mkdep, ../mkdep)
 AC_SUBST(MKDEP)
 
-CFLAGS="-Wall -O2 -fPIC -I/usr/local/include ${CFLAGS}"
-LDFLAGS="-L/usr/local/lib ${LDFLAGS}"
+CFLAGS="-Wall -O2 -fPIC ${CFLAGS}"
+LDFLAGS="${LDFLAGS}"
 
 # Checks for libraries.
 AC_CHECK_LIB([z], [deflate])
+AC_CHECK_LIB([elwix], [crcAdler])
 
 # Checks for header files.
 AC_CHECK_HEADERS([fcntl.h stdlib.h string.h sys/param.h unistd.h])