diff --git a/configure.ac b/configure.ac
index 648227a..8fabf21 100644
--- a/configure.ac
+++ b/configure.ac
@@ -5,8 +5,10 @@
 
 AC_CONFIG_HEADERS([config.h])
 AC_PROG_CXX
+AC_PROG_RANLIB
+AM_PROG_AR
 AC_LANG([C++])
-LT_INIT([enable-static disable-shared])
+
 AX_CXX_COMPILE_STDCXX_11(, optional)
 
 AC_MSG_CHECKING([for std::shared_ptr])