dev-cpp-users

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

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

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

[<wa...@wa...>]

On 21 Oct 2004 at 16:25, Teboho Nyareli wrote:

> 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++.

.lib?  I believe that's your problem.  You should be linking a .a file not a .lib file.

Watson (the pencil neck) Davis

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

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

Hi Watson,
FFTW 3.01 ( fftw-3.0.1-w32-pl1 )comes with following files:
 fftw3.dll
 fftw3.exp
 fftw3.h
 fftw3.lib
 fftw.map
I linked fftw3.lib in the project options.

 When using FFTW 2.1.5, I add the following files to the lib folder:
 libfftw.a
libfftw.la
librfftw.a
librfftw.la

There might be something I am missing. Please help.

regards
Teboho
 
                 

>>> <wa...@wa...> 21/10/2004 19:26:34 >>>
On 21 Oct 2004 at 16:25, Teboho Nyareli wrote:

> 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++.

.lib?  I believe that's your problem.  You should be linking a .a file
not a .lib file.

Watson (the pencil neck) Davis





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

[<wa...@wa...>]

I have not used the FFTW libraries and I don't have them installed 
and I don't have time right now to download them and write something 
to test them.  But as I said, the FFTW 3.01 files look like they're 
set up for Visual C++.  The hint is in the way the library is named.  
With Dev C++/mingw, the format for the library is 

lib<library name>.a

Take a look at the FFTW 2.1.5 filenames, they follow this convention.

I would not expect the fftw3.lib file to link properly.  It's almost 
definitely in the wrong format. I think you're stuck with using FFTW 
2.1.5 until someone comes out with a FFTW 3.0.1 Dev Pack for Dev 
C++/MinGW... unless you pick up another compiler.

Sorry.

Watson (the pencil neck) Davis

On 22 Oct 2004 at 8:26, Teboho Nyareli wrote:

> Hi Watson,
> FFTW 3.01 ( fftw-3.0.1-w32-pl1 )comes with following files:
>  fftw3.dll
>  fftw3.exp
>  fftw3.h
>  fftw3.lib
>  fftw.map
> I linked fftw3.lib in the project options.
> 
>  When using FFTW 2.1.5, I add the following files to the lib folder:
>  libfftw.a
> libfftw.la
> librfftw.a
> librfftw.la
> 
> There might be something I am missing. Please help.
> 
> regards
> Teboho
> 
> 
> 
> >>> <wa...@wa...> 21/10/2004 19:26:34 >>>
> On 21 Oct 2004 at 16:25, Teboho Nyareli wrote:
> 
> > 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++.
> 
> .lib?  I believe that's your problem.  You should be linking a .a file
> not a .lib file.
> 
> Watson (the pencil neck) Davis
> 
> 
> 
> 
> 
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Re: [Dev-C++] Problems with linking FFTW library

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

Hi Watson,
It works fine with FFTW 2.1.5 version. I will just have to wait for a
FFTW 3.0.1 Dev Pack.

Thanks everyone for the help
Teboho


>>> <wa...@wa...> 22/10/2004 08:48:56 >>>
I have not used the FFTW libraries and I don't have them installed 
and I don't have time right now to download them and write something 
to test them.  But as I said, the FFTW 3.01 files look like they're 
set up for Visual C++.  The hint is in the way the library is named.  
With Dev C++/mingw, the format for the library is 

lib<library name>.a

Take a look at the FFTW 2.1.5 filenames, they follow this convention.

I would not expect the fftw3.lib file to link properly.  It's almost 
definitely in the wrong format. I think you're stuck with using FFTW 
2.1.5 until someone comes out with a FFTW 3.0.1 Dev Pack for Dev 
C++/MinGW... unless you pick up another compiler.

Sorry.

Watson (the pencil neck) Davis

On 22 Oct 2004 at 8:26, Teboho Nyareli wrote:

> Hi Watson,
> FFTW 3.01 ( fftw-3.0.1-w32-pl1 )comes with following files:
>  fftw3.dll
>  fftw3.exp
>  fftw3.h
>  fftw3.lib
>  fftw.map
> I linked fftw3.lib in the project options.
> 
>  When using FFTW 2.1.5, I add the following files to the lib folder:
>  libfftw.a
> libfftw.la
> librfftw.a
> librfftw.la
> 
> There might be something I am missing. Please help.
> 
> regards
> Teboho
> 
> 
> 
> >>> <wa...@wa...> 21/10/2004 19:26:34 >>>
> On 21 Oct 2004 at 16:25, Teboho Nyareli wrote:
> 
> > 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++.
> 
> .lib?  I believe that's your problem.  You should be linking a .a
file
> not a .lib file.
> 
> Watson (the pencil neck) Davis
> 
> 
> 
> 
> 
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Re: [Dev-C++] Problems with linking FFTW library

[Siva C. <siv...@ya...>]

Hello,

--- Teboho Nyareli <TNy...@cs...> wrote:
> Hi Watson,
> It works fine with FFTW 2.1.5 version. I will just
> have to wait for a
> FFTW 3.0.1 Dev Pack.

I still would stick to the fact that I am able to use
fftw comfortably with  Windows binaries compiled with
gcc under MinGW which I downloaded from :
ftp://ftp.fftw.org/pub/fftw/fftw3win32mingw.zip

I just link to the fftw3.lib file! There has been a
debate on wether a *.lib file can be linked. But
around 2 weeks back there was response, I do not
remember from whom, which said the *.lib files created
using the C language can be linked even under the gcc
system. I guess this is how I am able to get my work
done!

Siva Chandra.



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

[Cary H. <xen...@gm...>]

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
> 
> _______________________________
> Do you Yahoo!?
> Declare Yourself - Register online to vote today!
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Re: [Dev-C++] Problems with linking FFTW library

[Daniel K. O. <dan...@ya...>]

Cary Haynie wrote:

>Those errors look would suggest that your missing a header file or something.  
>  
>
Actually, it suggests that the lib is missing from the linking stage.

>>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'
>>    
>>
I didn't test the 2.1.5 version (I don't even know what's a FFT library 
for), but the 3.0.1 binary available at http://www.fftw.org works out of 
the box.
Seems that you aren't linking to the lib. Make sure to put every file in 
its right place. The .h file goes to the include folder, the .dll goes 
to somewhere in your path, and the other files go to your lib folder. 
Then in your project options you have to add the .lib file to the linker 
options.
This (from 
http://www.fftw.org/fftw3_doc/Complex-One_002dDimensional-DFTs.html#Complex-One_002dDimensional-DFTs 
) compiles and runs fine:

---
#include <fftw3.h>

int main(void)
{
        fftw_complex *in, *out;
        fftw_plan p;
        int N=16;

        in = fftw_malloc(sizeof(fftw_complex) * N);
        out = fftw_malloc(sizeof(fftw_complex) * N);
        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);
        return 0;
}
---


Daniel K. O.