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[Help-gsl] undefined reference problem with GSL functions

From: Mike Smith
Subject: [Help-gsl] undefined reference problem with GSL functions
Date: Tue, 26 Jul 2005 15:06:41 -0700 (PDT)

Hello, All

I tried a very simple example on the gsl reference
manual to test the GSL installed in my Cygwin. The
program is the following:

#include <stdio.h>
#include <gsl/gsl_sf_bessel.h>

int main (void)
  double x = 5.0;
  double y = gsl_sf_bessel_J0 (x);
  printf ("J0(%g) = %.18e\n",x,y);
  return 0;

When I do 

gcc -Wall -L/usr/local/include/gsl test.c -o test ,

the following error will be reported:
..../Temp/ccRVEv5H.o:test.c:(.text+0x3a): undefined
reference to `_gsl_sf_bessel_J0'

The undefined reference problem is persistent whenever
I try to use any GSL functions.

I installed gsl in the default directory and "make
check" works fine.

Does anybody know what happens? 

Thanks a lot,


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