[Help-gsl] Compiling under Borland C++ Builder 6

[Michele Santucci]

Hello ML,

I recently discovered this wonderful library and I'm trying to use it into 
my devel. environment:
Borland C++ Builder 6 Pro. I tried several times to recompile the source 
package without
great luck then I downloaded the binary release (DLL) of the library and 
tried to create
the 'lib' to link to executables using Borland's IMPLIB utility...

The first result was this:

Warning duplicate symbol: gsl_sf_bessel_i0_scaled
Warning duplicate symbol: gsl_sf_bessel_i0_scaled_e
Warning duplicate symbol: gsl_sf_bessel_i1_scaled
Warning duplicate symbol: gsl_sf_bessel_i1_scaled_e
Warning duplicate symbol: gsl_sf_bessel_j0
Warning duplicate symbol: gsl_sf_bessel_j0_e
Warning duplicate symbol: gsl_sf_bessel_j1
Warning duplicate symbol: gsl_sf_bessel_j1_e
Warning duplicate symbol: gsl_sf_bessel_k0_scaled
Warning duplicate symbol: gsl_sf_bessel_k0_scaled_e
Warning duplicate symbol: gsl_sf_bessel_k1_scaled
Warning duplicate symbol: gsl_sf_bessel_k1_scaled_e
Warning duplicate symbol: gsl_sf_bessel_y0
Warning duplicate symbol: gsl_sf_bessel_y0_e
Warning duplicate symbol: gsl_sf_bessel_y1
Warning duplicate symbol: gsl_sf_bessel_y1_e

After that I tried using the -c option and I finally got a clean result ... 
after that I tried to create
a simple application using the library (I got this example from original GSL 
docs):

This's the whole project source (unit1.cpp):

#include <vcl.h>
#pragma hdrstop
#include "Unit1.h"
#include <gsl/gsl_sf_bessel.h>
#pragma package(smart_init)
#pragma resource "*.dfm"

TForm1 *Form1;

__fastcall TForm1::TForm1(TComponent* Owner)
       : TForm(Owner)
{
}

void __fastcall TForm1::Button1Click(TObject *Sender)
{
       double x = Edit2->Text.ToDouble();

       double y = gsl_sf_bessel_J0 (x);

       Edit1->Text.sprintf ("J0(%g) = %.18e\n", x, y);
}



But when I try to build everything I got this (linker) error:

[Linker Error] Unresolved external '_gsl_sf_bessel_J0' referenced from
C:\DOCUMENTS AND SETTINGS\MICHELE\DESKTOP\GSL\UNIT1.OBJ



Michele Santucci

===================
Celin Avio S.r.l.
Software Dev. Manager
--------------------------------------
tel. +390187564080
Via Fontevivo 21/M
19126 La Spezia
=================== 



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