+#include "support/types.h"
+
+# include <boost/iostreams/filtering_streambuf.hpp>
+# include <boost/iostreams/filter/gzip.hpp>
+# include <boost/iostreams/device/file.hpp>
+namespace io = boost::iostreams;
+
+#include <boost/utility.hpp>
+
+#include <istream>
+#include <stack>
+#include <vector>
+
+
+namespace lyx {
+
+namespace support { class FileName; }