RE: [Caml-list] Using OCaml from C

[David Allsopp <dra-news@metastack.com>]

Stéphane Glondu wrote:
> Le 10/09/2013 14:21, Tom Ridge a écrit :
> > /home/tr61/.opam/4.00.1/lib/core/libcore_stubs.a(unix_stubs.o): In
> > function `unix_clock_gettime':
> > unix_stubs.c:(.text+0x2776): undefined reference to `clock_gettime'
> >
> > I had -lrt after -lpthread, but the error was still reported; when I
> > moved -lrt to end of command line things seemed to work; why?

<snip>

> > My real question is: what command *should* I be using to compile my
> > example? Or is the above more-or-less expected?
> 
> Your calls to cp, ar and your use of -custom look suspicious. But it is
> difficult to be more helpful without a concrete testcase.

They're exactly as in the manual and are correct for compiling with ocamlc for static linking with C code. The cp and ar calls are necessary to set-up the static library (which should use libcamlrun.a as a starting point) - see #19.8 (the example in question), #19.7.4, #19.7.5 and #19.1.3 in the manual.


David