Dear OCaml users: I'm using Frontc, which is one of the libraries released in CDK, to parse C source code. I downloded the complete binaries for Linux i386 libc6 from http://pauillac.inria.fr/cdk/binaries/binaries-3.03/gz/cdk-3.03.tar.gz and installed it on a Linux server by following the installation instructions. The following code (mail.ml) is the main ocaml program that use Frontc to parse a sample code written in C language. open Frontc (* -------------------------------------- Test case for sample1.c --------------------------------------*) let parse_result = Frontc.parse_file "/home/sand/zhuping/sample1.c" error_channel; I compiled the maim.ml using this command: ocamlopt -I /usr/local/lib/cdk-3.03/lib/ocaml-3.03/ main.ml But some error returns: /usr/local/lib/cdk-3.03/lib/ocaml-3.03/pervasives.cmi is not a compiled interface All the Frontc codes located under the directory /usr/local/lib/cdk-3.03/lib/ocaml-3.03/ are compiled codes: frontc.a frontc.cma frontc.cmi frontc.cmx frontc.cmxa clexer.cmi clexer.cmx cparser.cmi cparser.cmx cabs.cmi cabs.cmx cprint.cmi cprint.cmx There are no source implementation/interface files with respect to the corresponding files listed above. Can anybody help to to solve this problem? Thank you very much for your help:)