[GRASSLIST:3412] i.fft help

[Anil Kumar Bhagat]

Dear Grass Users,
My Problem is when I run <i.fft> module it gives following messege 

i.fft: error while loading shared libraries: libfftw.so.2: cannot load
shared object file: No such file or directory

Plese suggest me how to do this .

With best Regards

Anil Kumar Bhagat
( Project Asst. )
Center For Ecological Science ,
Indian Institute Of Science Banglore,
Banglore .
Phone : 3600985 ,3092506 ext-213