[fpc-pascal] freeBSD and GetProcedureAddress() ?

[fredvs]

Hello everybody.

Good news for fpc: => this examples (with source+libraries+binaries freeBSD
64 bit) =>

>> https://sites.google.com/site/fiensprototyping/bsd_dynlib_test.tar.gz

Show that on freeBSD fpc-applications can dynamically load and run fpc and C
libraries.

1) Test with fpc libraries:
___________________________

- The fpc library:=>

library test ;
{$mode objfpc}

procedure fpctest ;cdecl;
begin
 writeln('Ok, it works for fpc library...');
end;

exports
fpctest name 'fpctest';

begin
end.
__________________________
- The fpc application:=>

program getadrproc;

uses
dynlibs, SysUtils ;
var fpctest: procedure() ; cdecl;
myhandle:TLibHandle=dynlibs.NilHandle;
ordir : string;

begin
ordir := (ExtractFilePath(ParamStr(0)));

myhandle:=DynLibs.LoadLibrary(ordir + 'libtest.so'); 
if myhandle <> dynlibs.NilHandle then writeln('OK library loaded') else
writeln('library NOT loaded') ;

Pointer(fpctest):=DynLibs.GetProcedureAddress(myhandle,PChar('fpctest'));
if Pointer(fpctest) <> nil then writeln('OK address loaded') else
writeln('address NOT loaded') ;

fpctest();
DynLibs.UnloadLibrary(myhandle);
end.
 
///////////// 

On my freeBSD 10 64 bit, it works ;-)

_____________________________

2) Test with C libraries:
___________________________

- The fpc application:=>

program getadrproc_c;

uses
dynlibs, SysUtils, CTypes  ;

var
Pa_Initialize: function():cint32 ; cdecl;
Pa_Terminate: function():cint32 ; cdecl;
pahandle:TLibHandle=dynlibs.NilHandle;
ordir : string;

begin
ordir := ExtractFilePath(ParamStr(0));

{$IF DEFINED(linux)}
pahandle:=DynLibs.LoadLibrary(ordir + 'libportaudio_lin64.so'); 
  {$endif}
  
{$IF DEFINED(freebsd)}
pahandle:=DynLibs.LoadLibrary(ordir + 'libportaudio-bsd64.so'); 
  {$endif}
  
if pahandle <> dynlibs.NilHandle then writeln('OK library loaded') else
writeln('library NOT loaded') ;


Pointer(Pa_Initialize):=DynLibs.GetProcedureAddress(pahandle,PChar('Pa_Initialize'));
if Pointer(Pa_Initialize) <> nil then writeln('OK Pa_Initialize loaded')
else writeln('Pa_Initialize NOT loaded') ;

Pointer(Pa_Terminate):=DynLibs.GetProcedureAddress(pahandle,PChar('Pa_Terminate'));
if Pointer(Pa_Terminate) <> nil then writeln('OK Pa_Terminate loaded') else
writeln('Pa_Terminate NOT loaded') ;

Pa_Initialize();
Pa_Terminate();

DynLibs.UnloadLibrary(pahandle);
end.

////////////////

And it works too on freeBSD 10 64 bit ;-)


>> Conclusion: I have to check my code, why do i get that error message on
>> freeBSD and not in Linux => lot of hair and nights to loose.

PS: Sorry to disturb (and it would be easier if fpc was the guilty...)

Thanks.

Fred



-----
Many thanks ;-)
--
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