I didn't see it but there was an important file missing namely document-undo.h

diff --git a/src/document-undo.h b/src/document-undo.h
new file mode 100644 (file)
index 0000000..9fc49b1
--- /dev/null
+++ b/src/document-undo.h
@@ -0,0 +1,14 @@
+class SPDocumentUndo
+{
+       public:
+               static void set_undo_sensitive(SPDocument *doc, bool sensitive);
+               static bool get_undo_sensitive(SPDocument const *document);
+               static void clear_undo(SPDocument *document);
+               static void clear_redo(SPDocument *document);
+               static void done(SPDocument *document, unsigned int event_type, Glib::ustring event_description);
+               static void maybe_done(SPDocument *document, const gchar *keyconst, unsigned int event_type, Glib::ustring event_description);
+               static void reset_key(Inkscape::Application *inkscape, SPDesktop *desktop, GtkObject *base);
+               static void cancel(SPDocument *document);
+               static gboolean undo(SPDocument *document);
+               static gboolean redo(SPDocument *document);
+};