diff --git a/libasn1compiler/asn1c_constraint.h b/libasn1compiler/asn1c_constraint.h
new file mode 100644
index 0000000..481c0b3
--- /dev/null
+++ b/libasn1compiler/asn1c_constraint.h
@@ -0,0 +1,7 @@
+#ifndef	_ASN1C_CONSTRAINT_H_
+#define	_ASN1C_CONSTRAINT_H_
+
+int asn1c_emit_constraint_tables(arg_t *arg, asn1p_constraint_t *ct);
+int asn1c_emit_constraint_checking_code(arg_t *arg);
+
+#endif	/* _ASN1C_CONSTRAINT_H_ */