diff -urN SILLY-0.1.0/acinclude.m4 SILLY-0.1.0.new/acinclude.m4
--- SILLY-0.1.0/acinclude.m4	2006-08-01 22:12:24.000000000 +0200
+++ SILLY-0.1.0.new/acinclude.m4	2009-08-02 13:33:18.101057009 +0200
@@ -13,6 +13,14 @@
   	fi], 
 	[])
 
+silly_zlib_libdir_name="lib"
+AC_ARG_WITH([zlib-libdir],
+    AC_HELP_STRING([--with-zlib-libdir=DIR], [directory name where is zlib library you want to use]),
+	[if test "$withval" != no ; then
+	    silly_zlib_libdir_name="$withval"
+	fi],
+	[])
+
 dnl search in all path 
 HAVE_ZLIB=no
 for dir in $silly_zlib_search  
@@ -20,7 +28,7 @@
 	if  test "$HAVE_ZLIB"  = "no" ; then 
 		silly_zlib_home="$dir"
 		silly_zlib_cppflags="-I$silly_zlib_home/include" 
-		silly_zlib_ldflags="-L$silly_zlib_home/lib" 
+		silly_zlib_ldflags="-L$silly_zlib_home/$silly_zlib_libdir_name" 
 	  	if test -f "${silly_zlib_home}/include/zlib.h" ; then 
 			CPPFLAGS="$silly_zlib_cppflags $silly_zlib_save_CPPFLAGS"
 			LDFALGS="$silly_zlib_ldflags $silly_zlib_save_LDFLAGS"