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# Copyright 2013-2019 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
from spack import *
from spack.spec import ConflictsInSpecError
import llnl.util.lang
# os is used for rename, etc in patch()
import os
class Fftw(AutotoolsPackage):
"""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"
list_url = "http://www.fftw.org/download.html"
version('3.3.8', '8aac833c943d8e90d51b697b27d4384d')
version('3.3.7', '0d5915d7d39b3253c1cc05030d79ac47')
version('3.3.6-pl2', '927e481edbb32575397eb3d62535a856')
version('3.3.5', '6cc08a3b9c7ee06fdd5b9eb02e06f569')
version('3.3.4', '2edab8c06b24feeb3b82bbb3ebf3e7b3')
version('2.1.5', '8d16a84f3ca02a785ef9eb36249ba433')
patch('pfft-3.3.5.patch', when="@3.3.5:+pfft_patches", level=0)
patch('pfft-3.3.4.patch', when="@3.3.4+pfft_patches", level=0)
patch('pgi-3.3.6-pl2.patch', when="@3.3.6-pl2%pgi", level=0)
variant(
'float', default=True,
description='Produces a single precision version of the library')
variant(
'double', default=True,
description='Produces a double precision version of the library')
variant(
'long_double', default=True,
description='Produces a long double precision version of the library')
variant(
'quad', default=False,
description='Produces a quad precision version of the library '
'(works only with GCC and libquadmath)')
variant('openmp', default=False, description="Enable OpenMP support.")
variant('mpi', default=True, description='Activate MPI support')
variant(
'pfft_patches', default=False,
description='Add extra transpose functions for PFFT compatibility')
variant(
'simd',
default='generic-simd128,generic-simd256',
values=(
'sse', 'sse2', 'avx', 'avx2', 'avx512', # Intel
'avx-128-fma', 'kcvi', # Intel
'altivec', 'vsx', # IBM
'neon', # ARM
'generic-simd128', 'generic-simd256' # Generic
),
description='Optimizations that are enabled in this build',
multi=True
)
variant('fma', default=False, description='Activate support for fma')
depends_on('mpi', when='+mpi')
depends_on('automake', type='build', when='+pfft_patches')
depends_on('autoconf', type='build', when='+pfft_patches')
depends_on('libtool', type='build', when='+pfft_patches')
# https://github.com/FFTW/fftw3/commit/902d0982522cdf6f0acd60f01f59203824e8e6f3
conflicts('%gcc@8:8.9999', when="@3.3.7")
provides('fftw-api@2', when='@2.1.5')
provides('fftw-api@3', when='@3:')
def flag_handler(self, name, flags):
arch = ""
spec = self.spec
target_simds = {
('x86_64',): ('sse', 'sse2', 'avx', 'avx2', 'avx512',
'avx-128-fma', 'kcvi'),
('ppc', 'ppc64le', 'power7'): ('altivec', 'vsx'),
('arm',): ('neon',)
}
if spec.satisfies("platform=cray"):
# FIXME; It is assumed that cray is x86_64.
# If you support arm on cray, you need to fix it.
arch = "x86_64"
for targets, simds in target_simds.items():
if (
(arch not in targets)
and not any(
spec.satisfies('target={0}'.format(t)) for t in targets)
):
if any(spec.satisfies('simd={0}'.format(x)) for x in simds):
raise ConflictsInSpecError(
spec,
[(
spec,
spec.architecture.target,
spec.variants['simd'],
'simd={0} are valid only on {1}'.format(
','.join(target_simds[targets]),
','.join(targets)
)
)]
)
return (flags, None, None)
@property
def libs(self):
# Reduce repetitions of entries
query_parameters = list(llnl.util.lang.dedupe(
self.spec.last_query.extra_parameters
))
# List of all the suffixes associated with float precisions
precisions = [
('float', 'f'),
('double', ''),
('long_double', 'l'),
('quad', 'q')
]
# Retrieve the correct suffixes, or use double as a default
suffixes = [v for k, v in precisions if k in query_parameters] or ['']
# Construct the list of libraries that needs to be found
libraries = []
for sfx in suffixes:
if 'mpi' in query_parameters and '+mpi' in self.spec:
libraries.append('libfftw3' + sfx + '_mpi')
if 'openmp' in query_parameters and '+openmp' in self.spec:
libraries.append('libfftw3' + sfx + '_omp')
libraries.append('libfftw3' + sfx)
return find_libraries(libraries, root=self.prefix, recursive=True)
def patch(self):
# If fftw/config.h exists in the source tree, it will take precedence
# over the copy in build dir. As only the latter has proper config
# for our build, this is a problem. See e.g. issue #7372 on github
if os.path.isfile('fftw/config.h'):
os.rename('fftw/config.h', 'fftw/config.h.SPACK_RENAMED')
def autoreconf(self, spec, prefix):
if '+pfft_patches' in spec:
autoreconf = which('autoreconf')
autoreconf('-ifv')
def configure(self, spec, prefix):
# Base options
options = [
'--prefix={0}'.format(prefix),
'--enable-shared',
'--enable-threads'
]
if not self.compiler.f77 or not self.compiler.fc:
options.append("--disable-fortran")
if spec.satisfies('@:2'):
options.append('--enable-type-prefix')
# Variants that affect every precision
if '+openmp' in spec:
# Note: Apple's Clang does not support OpenMP.
if spec.satisfies('%clang'):
ver = str(self.compiler.version)
if ver.endswith('-apple'):
raise InstallError("Apple's clang does not support OpenMP")
options.append('--enable-openmp')
if spec.satisfies('@:2'):
# TODO: libtool strips CFLAGS, so 2.x libxfftw_threads
# isn't linked to the openmp library. Patch Makefile?
options.insert(0, 'CFLAGS=' + self.compiler.openmp_flag)
if '+mpi' in spec:
options.append('--enable-mpi')
# SIMD support
float_options, double_options = [], []
if spec.satisfies('@3:', strict=True):
for opts in (float_options, double_options):
opts += self.enable_or_disable('simd')
opts += self.enable_or_disable('fma')
configure = Executable('../configure')
# Build double/float/long double/quad variants
if '+double' in spec:
with working_dir('double', create=True):
configure(*(options + double_options))
if '+float' in spec:
with working_dir('float', create=True):
configure('--enable-float', *(options + float_options))
if spec.satisfies('@3:+long_double'):
with working_dir('long-double', create=True):
configure('--enable-long-double', *options)
if spec.satisfies('@3:+quad'):
with working_dir('quad', create=True):
configure('--enable-quad-precision', *options)
def build(self, spec, prefix):
if '+double' in spec:
with working_dir('double'):
make()
if '+float' in spec:
with working_dir('float'):
make()
if spec.satisfies('@3:+long_double'):
with working_dir('long-double'):
make()
if spec.satisfies('@3:+quad'):
with working_dir('quad'):
make()
def check(self):
spec = self.spec
if '+double' in spec:
with working_dir('double'):
make("check")
if '+float' in spec:
with working_dir('float'):
make("check")
if spec.satisfies('@3:+long_double'):
with working_dir('long-double'):
make("check")
if spec.satisfies('@3:+quad'):
with working_dir('quad'):
make("check")
def install(self, spec, prefix):
if '+double' in spec:
with working_dir('double'):
make("install")
if '+float' in spec:
with working_dir('float'):
make("install")
if spec.satisfies('@3:+long_double'):
with working_dir('long-double'):
make("install")
if spec.satisfies('@3:+quad'):
with working_dir('quad'):
make("install")
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