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# Copyright 2013-2021 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)
import sys
from spack import *
class Veclibfort(Package):
"""Lightweight but flexible shim designed to rectify the incompatibilities
between the Accelerate/vecLib BLAS and LAPACK libraries shipped with macOS
and FORTRAN code compiled with modern compilers such as GNU Fortran."""
homepage = "https://github.com/mcg1969/vecLibFort"
url = "https://github.com/mcg1969/vecLibFort/archive/0.4.2.tar.gz"
git = "https://github.com/mcg1969/vecLibFort.git"
version('develop', branch='master')
version('0.4.2', sha256='c61316632bffa1c76e3c7f92b11c9def4b6f41973ecf9e124d68de6ae37fbc85')
variant('shared', default=True,
description="Build shared libraries as well as static libs.")
# virtual dependency
provides('blas')
provides('lapack')
@property
def libs(self):
shared = True if '+shared' in self.spec else False
return find_libraries(
'libvecLibFort', root=self.prefix, shared=shared, recursive=True
)
@property
def headers(self):
# veclibfort does not come with any headers. Return an empty list
# to avoid `spec['blas'].headers` from crashing.
return HeaderList([])
def install(self, spec, prefix):
if sys.platform != 'darwin':
raise InstallError('vecLibFort can be installed on macOS only')
filter_file(r'^PREFIX=.*', '', 'Makefile')
make_args = []
if spec.satisfies('%gcc@6:'):
make_args += ['CFLAGS=-flax-vector-conversions']
make_args += ['PREFIX=%s' % prefix, 'install']
make(*make_args)
# test
fc = which('fc')
flags = ['-o', 'tester', '-O', 'tester.f90']
flags.extend(spec['veclibfort'].libs.ld_flags.split())
fc(*flags)
Executable('./tester')()
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