Re: [Help-gsl] Need help getting started!

[David Schaich]

What command(s) are you using to compile and link?  Be sure to include 
"-lgsl -lgslcblas -lm" as described in the manual,
www.gnu.org/software/gsl/manual/html_node/Linking-programs-with-the-library.html

-David Schaich


jgvicke wrote:
> Hey everyone,
>
> It has been a while since I have needed to program in C, so I am a 
> little rusty. I tried getting the basic test program working, but am 
> recieving errors. This is the program I am trying to compile:
>
>     #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;
>     }
>
> I am getting errors that say:
>
> Error    1    error LNK2019: unresolved external symbol 
> _gsl_sf_bessel_J0 referenced in function _main
>
> I think this is from the library not refrencing itself correctly. I 
> have downloaded the entire library, then put everything in a folder 
> called "gsl" in my compilers include directory. I even tried moving 
> all the .h files into the main folder instead of leaving them in the 
> many subdirectories, still with no luck. I am really stuck on how to 
> move forward, and any help would be appreciated.
>
> Thanks
>
> John Vickers