Re: [Dev-C++] Problems with linking FFTW library

[Teboho N. <TNy...@cs...>]

Hi,
I have included the example code from FFTW 3.01 tuturial. I just
replaced fft_plan_dft_1d( ) and fftw_excute( ) with fftw_create_plan and
fftw_one when using the binaries from FFTW 2.1.5.  I also replace the
header file fftw3.h with the ones shown below. When using FFTW 3.01
binaries I add the fftw3.lib file via the menu  project-> object file or
linker options in the Dev-C++. When using the FFTW 2.1.5 binaries, I add
the libfftw.* files to the lib folder.  It still doesn't work with this
changes.


#include <stdlib.h>
#include <fftw.h>
#include <rfftw.h>

int main()
 {
     int N = 256;
     fftw_complex *in, *out;
     fftw_plan p;
     in = (fftw_complex*)fftw_malloc(sizeof(fftw_complex) * N);
     out = (fftw_complex*)fftw_malloc(sizeof(fftw_complex) * N);
     p = fftw_create_plan(N,FFTW_FORWARD,FFTW_ESTIMATE);
     fftw_one(p,in,out);
      //p = fftw_plan_dft_1d(N, in, out, FFTW_FORWARD,FFTW_ESTIMATE);
      //fftw_execute(p); /* repeat as needed */
      fftw_destroy_plan(p);
      fftw_free(in);
      fftw_free(out);
      system("PAUSE");
      return 0;
 }

thanks again
Teboho



>>> Cary Haynie <xen...@gm...> 21/10/2004 15:11:55 >>>
Those errors look would suggest that your missing a header file or
something.  
I dont know what headers that fftw uses, but thats where I would
start.  Also make sure that that there is a 'using namespace <name>;'
statement, if one is required.


On Thu, 21 Oct 2004 11:31:13 +0200, Teboho Nyareli
<tny...@cs...> wrote:
> Hi Siva,
> I am still getting the same errors even with fftw-2.1.5. version.
> 
> c:\dev-c++\examples\fft\fft.o(.text+0x29):fft.cpp: undefined
reference
> to `fftw_malloc'
> c:\dev-c++\examples\fft\fft.o(.text+0x42):fft.cpp: undefined
reference
> to `fftw_malloc'
> c:\dev-c++\examples\fft\fft.o(.text+0x58):fft.cpp: undefined
reference
> to `fftw_create_plan'
> c:\dev-c++\examples\fft\fft.o(.text+0x74):fft.cpp: undefined
reference
> to `fftw_one'
> c:\dev-c++\examples\fft\fft.o(.text+0x83):fft.cpp: undefined
reference
> to `fftw_destroy_plan'
> c:\dev-c++\examples\fft\fft.o(.text+0x92):fft.cpp: undefined
reference
> to `fftw_free'
> c:\dev-c++\examples\fft\fft.o(.text+0xa1):fft.cpp: undefined
reference
> to `fftw_free'
> 
> 
> thanks in advance
> Teboho
> 
> >>> Siva Chandra <siv...@ya...> 20/10/2004 09:54:19 >>>
> 
> 
> 
> Hello,
> 
> There is a Dev-Pak now available for fftw at
> http://www.devpaks.org/ (it is listed under the
> mathematics section there).
> 
> You may try using it. But It is for an older version
> fftw-2.1.5.
> 
> HTH,
> Siva Chandra
> 
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