--- libaitsync/configure.in	2011/05/09 14:36:33	1.2
+++ libaitsync/configure.in	2014/02/04 16:58:17	1.7
@@ -1,11 +1,14 @@
 #
 # $Author: misho $
-# $Id: configure.in,v 1.2 2011/05/09 14:36:33 misho Exp $
+# $Id: configure.in,v 1.7 2014/02/04 16:58:17 misho Exp $
 #
-AC_INIT(libaitsync, 1.0, misho@aitbg.com)
+AC_INIT(libaitsync, 2.1, 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
@@ -17,11 +20,12 @@ AC_CANONICAL_TARGET
 AC_CHECK_TOOL(MKDEP, mkdep, no)
 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])