Hi!
That's my inattention.
I've found the solution :)
One should use -rdynamic for LD_MAIN too.
Without this e.g. dlopen("lib/ht") fails with "Undefined symbol 'Nil'" error
So, now all tests passed with OK.
Alex, I will send you my files soon. As I understand, it's not possible to send
them as attachment to mailing list
Best regards,
Mansur
Суббота, 5 января 2013, 18:06 +01:00 от Alexander Burger
<a...@software-lab.de>:
> Hi Mansur,
>
> > I tried different options, also without stripping, but with no success.
> > Perhaps someone can help to write small assembly program with shared
> > library for test dlopen/dlsym calls?
>
> What did you use for the 'LD-SHARED' linker options? The Makefile of
> 'pil32' uses "-shared -export-dynamic" for FreeBSD (in addition to
> "-m32" which obviously doesn't make sense here). Perhaps this works
> for 64-bits too?
>
>
> An assembly program is probably not so helpful. Does FreeBSD have
> the 'ltrace' utility? If so, you could do
>
> $ ltrace bin/picolisp 2>xxx
> : (ht:Prin 123)
>
> and then look into 'xxx' for something like
>
> dlopen("lib/ht", 257) = 0x011700f0
> dlsym(0x011700f0, "Prin") = 0x7fe3f3f9f222
>
>
> I use 'gdb' in such cases to single-step through the program, but that's
> not what I would really recommend ;-)
>
> ♪♫ Alex
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