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##############################################################################
# Copyright (c) 2013, Lawrence Livermore National Security, LLC.
# Produced at the Lawrence Livermore National Laboratory.
#
# This file is part of Spack.
# Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
# LLNL-CODE-647188
#
# For details, see https://github.com/llnl/spack
# Please also see the LICENSE file for our notice and the LGPL.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License (as published by
# the Free Software Foundation) version 2.1 dated February 1999.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
# conditions of the GNU General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
##############################################################################
from spack import *
class Fftw(Package):
"""
FFTW is a C subroutine library for computing the discrete Fourier transform (DFT) in one or more dimensions, of
arbitrary input size, and of both real and complex data (as well as of even/odd data, i.e. the discrete cosine/sine
transforms or DCT/DST). We believe that FFTW, which is free software, should become the FFT library of choice for
most applications.
"""
homepage = "http://www.fftw.org"
url = "http://www.fftw.org/fftw-3.3.4.tar.gz"
version('3.3.4', '2edab8c06b24feeb3b82bbb3ebf3e7b3')
##########
# Floating point precision
FLOAT = 'float'
LONG_DOUBLE = 'long_double'
QUAD_PRECISION = 'quad'
PRECISION_OPTIONS = {
FLOAT: '--enable-float',
LONG_DOUBLE: '--enable--long-double',
QUAD_PRECISION: '--enable-quad-precision'
}
variant(FLOAT, default=False, description='Produces a single precision version of the library')
variant(LONG_DOUBLE, default=False, description='Produces a long double precision version of the library')
variant(QUAD_PRECISION, default=False, description='Produces a quad precision version of the library (works only with GCC and libquadmath)')
##########
variant('mpi', default=False, description='Activate MPI support')
depends_on('mpi', when='+mpi')
@staticmethod
def enabled(x):
"""
Given a variant name returns the string that means the variant is enabled
:param x: variant name
"""
# FIXME : duplicated from MVAPICH2
return '+' + x
def check_fortran_availability(self, options):
if not self.compiler.f77 or not self.compiler.fc:
options.append("--disable-fortran")
def set_floating_point_precision(self, spec, options):
l = [option for variant, option in Fftw.PRECISION_OPTIONS.iteritems() if self.enabled(variant) in spec]
if len(l) > 1:
raise RuntimeError('At most one floating point precision variant may activated per build.')
options.extend(l)
def install(self, spec, prefix):
options = ['--prefix=%s' % prefix,
'--enable-shared',
'--enable-threads',
'--enable-openmp']
self.check_fortran_availability(options)
self.set_floating_point_precision(spec, options)
if '+mpi' in spec:
options.append('--enable-mpi')
configure(*options)
make()
make("install")
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