]> John Whitington wrote: > Hi Folks, > > I'm building a Plain C interface to our PDF libraries, but am stuck. The > idea is to build a library with Ocamlmklib containing the C wrapper > around the ocaml code. > > I've used some test files (included below) in place of the real ones. > > I can successfully build the library (I'm using OS x / intel): > > ocamlc -c -cc "cc" -ccopt " -DNATIVE_CODE -o cpdflibwrapper.o" > cpdflibwrapper.c > ocamlc cpdflibc.mli > ocamlc cpdflibc.ml > ocamlmklib -o camlpdfc cpdflibc.ml cpdflibwrapper.a > > (builds dllcamlpdfc.so, camlpdfc.a, camlpdfc.cma, camlpdfc.cmxa) > > But trying to link a C program which uses the new library fails. Do I > need to include something else, or have I got the ocamlmklib stage wrong? You need to include an OCaml "main program" into your library. The easiest way to build a library that include the OCaml runtime, some OCaml code and custom C code is the -output-obj option: ocamlc -output-obj -o camlpdfc.so cpdlibc.cmo cpdflibwrapper.o Note that cpdflibrwrapper should define a function that calls caml_startup in order to start the OCaml runtime and run the OCaml code. If you want to build a static library, you can use "-output-obj -o camlpdf.o" and then create the library yourself. -- Alain