#! /bin/bash

#This script compile and install fftw.2.1.5 for a Rocks Linux cluster in /share/apps/fftw. Run this script as root
# assuming mpif90 is already installed
# Check whether mpif90 is installed by issuing 'mpif90 -v'
# Typical output will be like mpif90 for MPICH2 version 1.4.1p1

cd /share/apps/configrepo
rm fftw-2.1.5.tar.gz
wget http://www2.fizik.usm.my/configrepo/howto/fftw/fftw-2.1.5.tar.gz
gunzip fftw-2.1.5.tar.gz
tar -xvf fftw-2.1.5.tar
cd fftw-2.1.5

./configure --with-g77-wrappers --enable-mpi --enable-threads --enable-openmp CC="cc" FC="mpiifort" --prefix=/share/apps/fftw
# FC="mpif90" or FC="mpiifort" will do. But mpiifort is preferred. This assumes mpiifort is already present. See http://www2.fizik.usm.my/configrepo/howto/intel/inst_impi to install mpiifort

# Check if the output of ./configure is OK before proceed. 

make
make install
## the fftw2 lib is now be found in /share/apps/fftw/lib and the include file is found in /share/apps/fftw/include/