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# Copyright 2013-2024 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.package 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"
license("BSL-1.0")
version("develop", branch="master")
version("0.4.3", sha256="fe9e7e0596bfb4aa713b2273b21e7d96c0d7a6453ee4b214a8a50050989d5586")
version("0.4.2", sha256="c61316632bffa1c76e3c7f92b11c9def4b6f41973ecf9e124d68de6ae37fbc85")
variant("shared", default=True, description="Build shared libraries as well as static libs.")
# virtual dependency
provides("blas")
# https://github.com/scipy/scipy/wiki/Dropping-support-for-Accelerate
provides("lapack@3.2.1")
@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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