SOLVED Need help for Dynamic load of a library

[Fred vS]

Hello everybody.
I have a big problem and cant find the solution.
I have developed a DJ prog, with Lazarus of course. (http://sites.google.com/site/fiensprototyping/home)
It uses a audio library : Bass (http://www.un4seen.com/).
To load that library i use a dynamic loading, with Lazdynamic_bass.pas.

It works perfectly.

Now it exists some plugging libraries like Bass_fx who use them self the Bass library.
And i cant load them dynamically like the main Bass library.
Any idea how to do this ?
Thanks

[Fred vS]

Here some explanations.

See in attachment :
Lazdynamic_bass.pas that load dynamic the Bass library, it is what i use and it works perfectly.
and bass_fx.pas who load the Bass_fx library as usual, not dynamic.

What must i change in Bass_fx.pas to load bass_fx lib dynamic ?

If i change in Bass_fx.pas in the use section:
lazdynamic_bass in place of bass it does not work.

The original header for bass is bass.pas who dont load bass lib dynamic.

Thanks

[Fred vS]

Toc, toc, toc is anybody there ?
Thanks

[marcov]

 
 lazdynamic_bass in place of bass it does not work.

What doesn't work where how and for who? Be descriptive

Also see if there are $linklib bass in bassfx, and remove them.

[Fred vS]

Hi marcov and thanks for your attention.

In attachment there is a dynamic loader of bass_fx that i try to develop.

I can compile a prog when i use that lazdynamic_bass_fx.pas, no error message but if i try to use a procedure of that header i get a external sigsegv error message.

What is wrong in my code ?

Thanks for help

[Fred vS]

Re-hello to everybody.

I have tried Lazdynamic_bass_fx.pas under windows and there it works perfectly, the library load like a charm.

If i compile the same code under Linux, the library dont load.
And the library libbass_fx.so works under Linux but only if i put it in /lib or /usr/lib.

Why can i not load dynamic that library under Linux ?

SOLVED The code is OK, maybe some prob with library libbass_fx.so ...

[marcov]

And the library libbass_fx.so works under Linux but only if i put it in /lib or /usr/lib.

This is normal, .so's standardly only load from system directories under Linux and unices.

[Fred vS]

Hi Marcov.

That is just the goal of a dynamic loading !  
With a dynamic load you can choose the location of a .so lib.

With Lazdynamic_Bass.pas you can choose the location of libbass.so and load it, in Linux and in Windows as well (bass.dll).

With  Lazdynamic_FX_Bass.pas  (that i have translated from Bass_FX.pas, following the ideas of Lazdynamic_Bass.pas for Bass.pas) it does not dynamic-load libbass_fx.so lib in Linux.
But in Windows, bass_fx.dll dynamic-load without problems with the same code lazdynamic_Bass_FX.pas.

And the question was : why ?
Whats wrong in code Lazdynamic_FX_Bass.pas ?
(Knowing that Lazdynamic__Bass.pas works perfectly in Linux as well and was translated from Bass.pas)

 
Thanks