Guillaume Yziquel a écrit :
Hi.
The manual is not up to date when it comes to embedding OCaml code into
C code.
http://caml.inria.fr/pub/docs/manual-ocaml/manual032.html#toc134
Specifically the section
18.7.5 Embedding the Caml code in the C code
and the piece of compilation code I'm having trouble with is the following:
ocamlopt -output-obj -o camlcode.o unix.cmxa other .cmx and
.cmxa files
cc -o myprog C objects and libraries \
camlcode.o -L/usr/local/lib/ocaml -lunix -lasmrun
This code complains about missing symbols from pervasives.
So I adapt it by compiling with pervasives.cmx, and I get
ocamlopt -output-obj -o camlcode.o pervasives.cmx
ld: /usr/lib/ocaml/pervasives.o: No such file: No such file or directory
File "caml_startup", line 1, characters 0-1:
Error: Error during linking
make: *** [camlcode.o] Erreur
But I cannot find pervasives.o anywhere.
Well I found it in stdlib.a, but looking back at the thread started by
Aaron Bohannon mid-december
http://caml.inria.fr/pub/ml-archives/caml-list/2009/12/3375527140f0de987a9dc6d2553990c8.en.html
it seems to me that there is little need for the -output-obj option, as
shown in the manual. Why not document the embedding by simply compiling
the C code tha provides the main function, which itself calls
caml_startup, and then linking it with the .cmx with ocamlopt? Why the
need for -output-obj, libasmrun.a, etc...?
--
Guillaume Yziquel
http://yziquel.homelinux.org/
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