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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)
from spack import *
class PyPynio(PythonPackage):
"""PyNIO ("pie-nee-oh") is a Python module that allows read and/or
write access to a variety of scientific data formats popular in
climate and weather"""
homepage = "https://www.pyngl.ucar.edu/Nio.shtml"
url = "https://github.com/NCAR/pynio/archive/1.5.4.tar.gz"
version('1.5.4', sha256='e5bb57d902740d25e4781a9f89e888149f55f2ffe60f9a5ad71069f017c89e1a')
variant('hdf5', default=False, description='Include HDF5 support')
variant('gdal', default=False, description='Include GDAL support')
# The setup.py claims it requires these abolutely.
depends_on('libpng')
depends_on('jpeg')
depends_on('zlib')
# Spack does not currently have netcdf below 4.x, and 3.x is a
# fundamentally different format. So, currently this is only providing
# support for netcdf4.
depends_on('netcdf-c@3.6.0:')
# Turning on the hdf (i.e. hdf4) dependency causes it not to build, with
# compile errors that (weirdly) relate to the declarations of HDF5.
# Very odd, so I have put it in as a comment, for some brave soul to take
# on later.
# depends_on('hdf', when='+hdf4')
# This one works, though.
depends_on('hdf5', when='+hdf5')
# Turning on the GDAL dependency apparently forces it to link with
# -ljasper, meaning that really it depends on gdal+jasper. In my view
# it should not need this unless one were specifically using PyNio to
# use GDAL to read JPEG-2000 files, but it seems to be hard-wired
# in PyNio's setup.py.
depends_on('gdal+jasper', when='+gdal')
# I have left off a few other optional dependencies, as they are not yet
# in Spack. HDFEOS, HDFEOS5, GRIB. See the pynio setup.py for details.
depends_on('py-numpy', type=('build', 'run'))
def setup_build_environment(self, env):
"""
These environment variables are how the setup.py knows which options
to turn on, and how to find them.
"""
env.set('F2CLIBS', 'gfortran')
env.set('HAS_NETCDF4', '1')
env.set('NETCDF4_PREFIX', self.spec['netcdf-c'].prefix)
if '+hdf5' in self.spec:
env.set('HAS_HDF5', '1')
env.set('HDF5_PREFIX', self.spec['hdf5'].prefix)
if '+gdal' in self.spec:
env.set('HAS_GDAL', '1')
env.set('GDAL_PREFIX', self.spec['gdal'].prefix)
# This one is trouble - see comments above.
# if '+hdf4' in self.spec:
# env.set('HAS_HDF4', '1')
# env.set('HDF4_PREFIX', self.spec['hdf'].prefix)
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