[gmx-users] Installation problem:fftw3f lib. not found.

[Shobhit Kudesia]

Hi,

I installed  fftw as follows (creating single- and double-precision
versions) :

./configure --enable-threads --enable-float --prefix=/home/kudesias/fftw
make
make install

make distclean

./configure --enable-threads --prefix=/home/kudesias/fftw
make
make install

I also used
export CPPFLAGS=-I/home/kudesias/fftw/include
export LDFLAGS=-L/home/kudesias/fftw/lib ( Initially I used I in place of L
so I corrected it)

On using the configure script

./configure  --enable-mpi

 I  get the following error then

checking how to hardcode library paths into programs... immediate
checking for special C compiler options needed for large files... no
checking for _FILE_OFFSET_BITS value needed for large files... no
checking for _LARGEFILE_SOURCE value needed for large files... 1
checking for sqrt in -lm... yes
checking for fftw3.h... configure: error: Cannot find the default external
FFT library (fftw3).

I will be glad if you can help with this.

Thanks


On Thu, Jun 25, 2009 at 2:08 AM, Florian Dommert <
dommert at icp.uni-stuttgart.de> wrote:

> * Shobhit Kudesia <shobhit.kudesia at gmail.com> [2009-06-25 01:55:00 +0530]:
>
>
>  Hi ,
>>
>> During the ./configure of gromacs on my Bash Shell, I get the following
>> error:
>>
>> configure: error: Cannot find fftw3f library
>>
>> I have installed fftw3 files in a directory other than usr/local. I
>> have installed fftw3 both with double and single precision but I still
>> get the error while configuration of GROMACS for default single
>> precision. I have also included the libraries  usinG CPPFLAGS &
>> LDFLAGS.
>>
>
> If you have installed the single version of FFTW3 and supply the
> corresponding CPPFLAGS and LDFLAGS to configure then the script will
> find the libraries. So two errors are very likely though we do not
> anything about your installation:
>
> * a small typo in the configure line ( if you present it here, everybody
> can
> judge this )
>
> * the installation of the single precision fftw3f failed for any reasons
>
> Flo
>
>>
>> Any help will be appreciated
>> _______________________________________________
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>
> --
> Florian Dommert
> Dipl.-Phys.
>
> Institute for Computational Physics
> University Stuttgart
>
> Pfaffenwaldring 27
> 70569 Stuttgart
>
> Tel: +49 - 711 / 6856-3613
> Fax: +49 - 711 / 6856-3658
>
> EMail: dommert at icp.uni-stuttgart.de
> Home: http://www.icp.uni-stuttgart.de/~icp/Florian_Dommert<http://www.icp.uni-stuttgart.de/%7Eicp/Florian_Dommert>
>
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-- 


With Warm Regards
Shobhit Kudesia
3rd year Undergraduate
Department of Biotechnology
IIT Kharagpur
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