Re: [Caml-list] Manually linking generated native code

[Bernhard Schommer <bernhardschommer@gmail.com>]

Hi,

you might want to use the -verbose switch to get the actual output of
the linker call. For me it is:
clang  -o 'a.out'   '-L$(ocamlc -where)'  'a.out.startup.s' '$(ocamlc
-where)/std_exit.o' 'test.s' '$(ocamlc -where)/stdlib.a' '$(ocamlc
-where)/libasmrun.a' -lm  -ldl

Best,
-Bernhard

2017-01-19 10:44 GMT+01:00 Christoph Höger <christoph.hoeger@celeraone.com>:
> Dear all,
>
> consider a simple test program:
>
>   let _ = Printf.printf "Hello world!\n"
>
> I can generate the relevant assembly just fine, e.g.:
>
> ocamlopt -dstartup -S test.ml
> gcc -c a.out.startup.s -c
>
> But I cannot link it:
>
> gcc a.out.startup.o -L$(ocamlc -where) -lasmrun_shared
> ....
> a.out.startup.o(.data+0x6e8): error: undefined reference to
> 'camlStd_exit__frametable'
> collect2: Fehler: ld gab 1 als Ende-Status zurück
> distcc[9960] ERROR: compile (null) on localhost failed
>
> It seems that the whole Pervasives is missing (which is kind of expected).
>
> How do I link it, manually? Where are the relevant object files?
>
> thanks,
>
> Christoph
>