diff --git a/compiler/cpp/configure.ac b/compiler/cpp/configure.ac
index 1c56c57..683133e 100644
--- a/compiler/cpp/configure.ac
+++ b/compiler/cpp/configure.ac
@@ -12,6 +12,8 @@
 
 AX_BOOST_BASE([1.33.1])
 
+AC_CHECK_FUNCS([memset])
+
 AC_CHECK_FUNCS([mkdir])
 
 AC_CHECK_FUNCS([realpath])
@@ -28,6 +30,8 @@
 
 AC_TYPE_SIZE_T
 
+AC_C_INLINE
+
 AC_C_CONST
 
 AC_C_VOLATILE