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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)
from spack.package import *
class NetlibXblas(AutotoolsPackage):
"""XBLAS is a reference implementation for extra precision BLAS.
XBLAS is a reference implementation for the dense and banded BLAS
routines, along with extended and mixed precision version. Extended
precision is only used internally; input and output arguments remain
the same as in the existing BLAS. Extra precisions is implemented as
double-double (i.e., 128-bit total, 106-bit significand). Mixed
precision permits some input/output arguments of different types
(mixing real and complex) or precisions (mixing single and
double). This implementation is proof of concept, and no attempt was
made to optimize performance; performance should be as good as
straightforward but careful code written by hand."""
homepage = "https://www.netlib.org/xblas"
url = "https://www.netlib.org/xblas/xblas.tar.gz"
license("BSD-3-Clause")
version("1.0.248", sha256="b5fe7c71c2da1ed9bcdc5784a12c5fa9fb417577513fe8a38de5de0007f7aaa1")
variant("fortran", default=True, description="Build Fortran interfaces")
variant("plain_blas", default=True, description="As part of XBLAS, build plain BLAS routines")
provides("blas", when="+plain_blas")
@property
def libs(self):
return find_libraries(["libxblas"], root=self.prefix, shared=False, recursive=True)
def configure_args(self):
args = []
if self.spec.satisfies("~fortran"):
args += ["--disable-fortran"]
if self.spec.satisfies("~plain_blas"):
args += ["--disable-plain-blas"]
return args
def install(self, spec, prefix):
mkdirp(prefix.lib)
install("libxblas.a", prefix.lib)
if self.spec.satisfies("+plain_blas"):
# XBLAS should be a drop-in BLAS replacement
install("libxblas.a", join_path(prefix.lib, "libblas.a"))
headers = [
"f2c-bridge.h",
"blas_dense_proto.h",
"blas_enum.h",
"blas_extended.h",
"blas_extended_private.h",
"blas_extended_proto.h",
"blas_fpu.h",
"blas_malloc.h",
]
mkdirp(prefix.include)
for h in headers:
install(join_path("src", h), prefix.include)
return
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