Switch to side-by-side view

--- a/src/configure.ac
+++ b/src/configure.ac
@@ -15,6 +15,8 @@
     sys=Default   
 fi
 (cd mk; rm -f sysconf; ln -s $sys sysconf)
+
+AC_SYS_LARGEFILE
 
 AC_CHECK_HEADERS(sys/mount.h sys/statfs.h sys/statvfs.h sys/vfs.h)