diff --git a/libasn1compiler/asn1c_lang.h b/libasn1compiler/asn1c_lang.h
new file mode 100644
index 0000000..8c9a6ea
--- /dev/null
+++ b/libasn1compiler/asn1c_lang.h
@@ -0,0 +1,28 @@
+#ifndef	ASN1_COMPILER_LANGUAGE_H
+#define	ASN1_COMPILER_LANGUAGE_H
+
+struct arg_s;
+
+typedef struct asn1_language_map_s {
+	asn1p_expr_meta_e meta_match;		/* meta_type */
+	asn1p_expr_type_e expr_match;		/* expr_type */
+	/*
+	 * A callback that would create a language-specific type declaration.
+	 */
+	int (*type_cb)(struct arg_s *arg);
+} asn1_language_map_t;
+
+
+extern asn1_language_map_t asn1_lang_map[AMT_EXPR_META_MAX][ASN_EXPR_TYPE_MAX];
+
+
+typedef enum asn1c_target_language {
+	ASN1C_LANGUAGE_C,
+} asn1c_target_language_e;
+
+/*
+ * Initialize the compiler to generate specified target language.
+ */
+int asn1c_with_language(asn1c_target_language_e lang);
+
+#endif	/* ASN1_COMPILER_LANGUAGE_H */