+#include "guile-compatibility.hh"
+#include "interval.hh"
+#include "lily-guile-macros.hh"
+#include "ly-module.hh"
+
+/** Conversion functions follow the GUILE naming convention, i.e.
+ A ly_B2A (B b); */
+
+SCM ly_last (SCM list);
+SCM ly_write2scm (SCM s);
+SCM ly_deep_copy (SCM);
+SCM ly_truncate_list (int k, SCM lst);
+
+SCM ly_to_string (SCM scm);
+SCM ly_to_symbol (SCM scm);
+
+extern SCM global_lily_module;
+
+string gulp_file_to_string (string fn, bool must_exist, int size);
+
+string ly_scm2string (SCM s);
+string ly_symbol2string (SCM);
+SCM ly_offset2scm (Offset);
+Offset ly_scm2offset (SCM);
+SCM ly_chain_assoc (SCM key, SCM achain);
+SCM ly_chain_assoc_get (SCM key, SCM achain, SCM dfault);
+SCM ly_assoc_cdr (SCM key, SCM alist);
+SCM ly_assoc_get (SCM key, SCM alist, SCM def);
+Interval ly_scm2interval (SCM);
+Drul_array<Real> ly_scm2realdrul (SCM);
+Slice int_list_to_slice (SCM l);
+SCM ly_interval2scm (Drul_array<Real>);
+char *ly_scm2newstr (SCM str, size_t *lenp);
+
+Real robust_scm2double (SCM, double);
+int robust_scm2int (SCM, int);
+Direction robust_scm2dir (SCM, Direction);
+Drul_array<Real> robust_scm2drul (SCM, Drul_array<Real>);
+Drul_array<bool> robust_scm2booldrul (SCM, Drul_array<bool>);
+Interval robust_scm2interval (SCM, Drul_array<Real>);
+Offset robust_scm2offset (SCM, Offset);
+string robust_scm2string (SCM, string);
+
+SCM ly_quote_scm (SCM s);
+bool type_check_assignment (SCM val, SCM sym, SCM type_symbol);
+string print_scm_val (SCM val);
+SCM ly_number2string (SCM s);
+
+SCM parse_symbol_list (char const *);
+SCM robust_list_ref (int i, SCM l);
+SCM alist_to_hashq (SCM);
+
+SCM ly_alist_vals (SCM alist);
+SCM ly_hash2alist (SCM tab);
+SCM ly_hash_table_keys (SCM tab);
+int procedure_arity (SCM);
+
+/* inserts at front, removing dublicates */
+inline SCM ly_assoc_front_x (SCM alist, SCM key, SCM val)
+{
+ return scm_acons (key, val, scm_assoc_remove_x (alist, key));
+}
+inline bool ly_is_list (SCM x) { return SCM_NFALSEP (scm_list_p (x)); }
+inline bool ly_is_procedure (SCM x) { return SCM_NFALSEP (scm_procedure_p (x)); }
+inline bool ly_is_port (SCM x) { return SCM_NFALSEP (scm_port_p (x)); }
+
+inline bool ly_is_equal (SCM x, SCM y)
+{
+ return SCM_NFALSEP (scm_equal_p (x, y));
+}
+
+inline bool ly_scm2bool (SCM x) { return SCM_NFALSEP (x); }
+inline char ly_scm2char (SCM x) { return SCM_CHAR (x); }
+inline SCM ly_bool2scm (bool x) { return SCM_BOOL (x); }
+
+inline SCM ly_append2 (SCM x1, SCM x2)
+{
+ return scm_append (scm_listify (x1, x2, SCM_UNDEFINED));
+}
+inline SCM ly_append3 (SCM x1, SCM x2, SCM x3)
+{
+ return scm_append (scm_listify (x1, x2, x3, SCM_UNDEFINED));
+}
+inline SCM ly_append4 (SCM x1, SCM x2, SCM x3, SCM x4)
+{
+ return scm_append (scm_listify (x1, x2, x3, x4, SCM_UNDEFINED));
+}
+
+/*
+ display and print newline.
+*/
+void ly_display_scm (void *s);
+
+void read_lily_scm_file (string);
+void ly_c_init_guile ();
+
+bool is_direction (SCM s);
+bool is_number_pair (SCM);
+bool is_axis (SCM);
+
+/*
+ these conversion functions also do a typecheck on the argument, and
+ return a default value if S has the wrong type.
+*/
+
+Direction to_dir (SCM s);
+bool to_boolean (SCM s);
+
+void init_ly_protection ();
+unsigned int ly_scm_hash (SCM s);
+
+SCM index_get_cell (SCM cell, Direction d);
+SCM index_set_cell (SCM cell, Direction d, SCM val);
+
+SCM ly_snoc (SCM s, SCM list);
+SCM ly_split_list (SCM s, SCM lst);
+SCM ly_unique (SCM lst);
+SCM ly_list_qsort_uniq_x (SCM lst);
+
+SCM ly_output_formats ();
+SCM ly_kpathsea_find_file (SCM);
+
+/*
+ snarfing.
+*/
+void add_scm_init_func (void (*) ());
+
+extern "C" {
+ typedef SCM (*Scheme_function_unknown) (GUILE_ELLIPSIS);