* [Caml-list] ocamlmklib fails with code compiled with ocamlopt -c
@ 2012-03-21 18:02 Ricardo Catalinas Jiménez
2012-03-21 18:40 ` Wojciech Meyer
0 siblings, 1 reply; 2+ messages in thread
From: Ricardo Catalinas Jiménez @ 2012-03-21 18:02 UTC (permalink / raw)
To: caml-list
I found out the next issue when using the native compiler to generate a
dynamic library from C:
$ ocamlopt -c foo.c
$ ocamlmklib -o foo foo.o
/usr/bin/ld: fsync.o: relocation R_X86_64_32 against `.rodata' can not
be used when making a shared object; recompile with -fPIC
fsync.o: could not read symbols: Bad value
collect2: ld returned 1 exit status
But `man ocamlopt' reads:
-fPIC Generate position-independent machine code. This is the default.
Anyway, I tried specifying manually `-fPIC' and it gave me the same
error.
But with `ocamlc -c' everything works as expected. Is this normal?
Best regards
--
Ricardo (http://r.untroubled.be/)
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Caml-list] ocamlmklib fails with code compiled with ocamlopt -c
2012-03-21 18:02 [Caml-list] ocamlmklib fails with code compiled with ocamlopt -c Ricardo Catalinas Jiménez
@ 2012-03-21 18:40 ` Wojciech Meyer
0 siblings, 0 replies; 2+ messages in thread
From: Wojciech Meyer @ 2012-03-21 18:40 UTC (permalink / raw)
To: caml-list
Ricardo Catalinas Jiménez <jimenezrick@gmail.com> writes:
> I found out the next issue when using the native compiler to generate a
> dynamic library from C:
>
> $ ocamlopt -c foo.c
> $ ocamlmklib -o foo foo.o
> /usr/bin/ld: fsync.o: relocation R_X86_64_32 against `.rodata' can not
> be used when making a shared object; recompile with -fPIC
> fsync.o: could not read symbols: Bad value
> collect2: ld returned 1 exit status
>
> But `man ocamlopt' reads:
> -fPIC Generate position-independent machine code. This is the default.
>
> Anyway, I tried specifying manually `-fPIC' and it gave me the same
> error.
>
> But with `ocamlc -c' everything works as expected. Is this normal?
You have to use `-shared' command line option when compiling with ocamlopt.
- Wojciech
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