Add missing LT_INIT to configure.ac

Change-Id: Iba83a1fec052486f64a9d7a685bbc9298a5bd707
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>
diff --git a/configure.ac b/configure.ac
index 8608596..72d26c1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,6 +18,9 @@
 AX_CXX_COMPILE_STDCXX_14([noext])
 AX_APPEND_COMPILE_FLAGS([-Wall -Werror], [CXXFLAGS])
 
+# For libtools
+LT_INIT
+
 # Checks for header files.
 AC_CHECK_HEADER(systemd/sd-bus.h, ,[AC_MSG_ERROR([Could not find systemd/sd-bus.h...systemd developement package required])])
 AC_CHECK_HEADER(sdbusplus/server.hpp, ,[AC_MSG_ERROR([Could not find server.hpp...openbmc/sdbusplus package required])])