diff --git a/YapTermConfig.h.in b/YapTermConfig.h.in
new file mode 100644
index 000000000..0172f92cc
--- /dev/null
+++ b/YapTermConfig.h.in
@@ -0,0 +1,9 @@
+/* Define sizes of some basic types	*/
+#undef  SIZEOF_INT_P
+#undef  SIZEOF_INT
+#undef  SIZEOF_SHORT_INT
+#undef  SIZEOF_LONG_INT
+#undef  SIZEOF_LONG_LONG_INT
+#undef  SIZEOF_FLOAT
+#undef  SIZEOF_DOUBLE
+