exception EnvError of string;;

let getenv env_var =

try Sys.getenv env_var

with Not_found -> raise (EnvError (Printf.sprintf "Couldn't find env variable %s" env_var));;

let realpath p = let curr_cwd = Sys.getcwd (); in

Sys.chdir p; let real_p = Sys.getcwd ()

in Sys.chdir curr_cwd; real_p;;

let hol_dir = realpath (getenv "HETS_HOL_DIR");;

let ocaml_source_dir = getenv "HETS_OCAML_LIB_DIR";;

let ocaml_tools_dir = getenv "HETS_HOLLIGHT_TOOLS";;

let use_file' s =

if Toploop.use_file Format.std_formatter s then ()

else (Format.print_string("Error in included file "^s);

Format.print_newline());;

use_file' (Filename.concat ocaml_tools_dir "overload_loadfile.ml");;

use_file "hol.ml";;

use_file' (Filename.concat ocaml_tools_dir "export_helper.ml");;

let oc = open_out "/tmp/exportml_done" in

close_out oc;