Added first version of the NCL package. (#2195)

Without GRIB2 and HDF-EOS support yet.

var/spack/repos/builtin/packages/ncl/package.py

+##############################################################################
+# Copyright (c) 2013-2016, Lawrence Livermore National Security, LLC.
+# Produced at the Lawrence Livermore National Laboratory.
+#
+# This file is part of Spack.
+# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
+# LLNL-CODE-647188
+#
+# For details, see https://github.com/llnl/spack
+# Please also see the LICENSE file for our notice and the LGPL.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License (as
+# published by the Free Software Foundation) version 2.1, February 1999.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
+# conditions of the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+##############################################################################
+from spack import *
+import os
+import shutil
+import tempfile
+
+
+class Ncl(Package):
+    """NCL is an interpreted language designed specifically for
+       scientific data analysis and visualization. Supports NetCDF 3/4,
+       GRIB 1/2, HDF 4/5, HDF-EOD 2/5, shapefile, ASCII, binary.
+       Numerous analysis functions are built-in."""
+
+    homepage = "https://www.ncl.ucar.edu"
+
+    version('6.3.0', '4834df63d3b56778441246303ab921c4',
+            url='https://www.earthsystemgrid.org/download/fileDownload.html?'
+                'logicalFileId=bec58cb3-cd9b-11e4-bb80-00c0f03d5b7c',
+            extension='tar.gz')
+    patch('spack_ncl.patch')
+
+    # This installation script is implemented according to this manual:
+    # http://www.ncl.ucar.edu/Download/build_from_src.shtml
+
+    variant('hdf4', default=False, description='Enable HDF4 support.')
+    variant('gdal', default=False, description='Enable GDAL support.')
+    variant('triangle', default=True, description='Enable Triangle support.')
+    variant('udunits2', default=True, description='Enable UDUNITS-2 support.')
+    variant('openmp', default=True, description='Enable OpenMP support.')
+
+    # Non-optional dependencies according to the manual:
+    depends_on('jpeg')
+    depends_on('netcdf')
+    depends_on('cairo')
+
+    # Also, the manual says that ncl requires zlib, but that comes as a
+    # mandatory dependency of libpng, which is a mandatory dependency of cairo.
+
+    # In Spack, we do not have an option to compile netcdf without netcdf-4
+    # support, so we will tell the ncl configuration script that we want
+    # support for netcdf-4, but the script assumes that hdf5 is compiled with
+    # szip support. We introduce this restriction with the following dependency
+    # statement.
+    depends_on('hdf5@:1.8+szip')
+
+    # In Spack, we also do not have an option to compile netcdf without DAP
+    # support, so we will tell the ncl configuration script that we have it.
+
+    # Some of the optional dependencies according to the manual:
+    depends_on('hdf', when='+hdf4')
+    depends_on('gdal', when='+gdal')
+    depends_on('udunits2', when='+udunits2')
+
+    # We need src files of triangle to appear in ncl's src tree if we want
+    # triangle's features.
+    resource(
+        name='triangle',
+        url='http://www.netlib.org/voronoi/triangle.zip',
+        md5='10aff8d7950f5e0e2fb6dd2e340be2c9',
+        placement='triangle_src',
+        when='+triangle')
+
+    def install(self, spec, prefix):
+
+        if (self.compiler.fc is None) or (self.compiler.cc is None):
+            raise InstallError('NCL package requires both '
+                               'C and Fortran compilers.')
+
+        self.prepare_site_config()
+        self.prepare_install_config()
+        self.prepare_src_tree()
+        make('Everything', parallel=False)
+
+    def setup_environment(self, spack_env, run_env):
+        run_env.set('NCARG_ROOT', self.spec.prefix)
+
+    def prepare_site_config(self):
+        fc_flags = []
+        cc_flags = []
+        c2f_flags = []
+
+        if '+openmp' in self.spec:
+            fc_flags.append(self.compiler.openmp_flag)
+            cc_flags.append(self.compiler.openmp_flag)
+
+        if self.compiler.name == 'gcc':
+            fc_flags.append('-fno-range-check')
+            c2f_flags.extend(['-lgfortran'])
+        elif self.compiler.name == 'intel':
+            fc_flags.append('-fp-model precise')
+            cc_flags.append('-fp-model precise')
+            c2f_flags.extend(['-lifcore', '-lifport'])
+
+        with open('./config/Spack', 'w') as f:
+            f.writelines([
+                '#define HdfDefines\n',
+                '#define CppCommand \'/usr/bin/env cpp -traditional\'\n',
+                '#define CCompiler cc\n',
+                '#define FCompiler fc\n',
+                ('#define CtoFLibraries ' + ' '.join(c2f_flags) + '\n'
+                 if len(c2f_flags) > 0
+                 else ''),
+                ('#define CtoFLibrariesUser ' + ' '.join(c2f_flags) + '\n'
+                 if len(c2f_flags) > 0
+                 else ''),
+                ('#define CcOptions ' + ' '.join(cc_flags) + '\n'
+                 if len(cc_flags) > 0
+                 else ''),
+                ('#define FcOptions ' + ' '.join(fc_flags) + '\n'
+                 if len(fc_flags) > 0
+                 else ''),
+                '#define BuildShared NO'
+            ])
+
+    def prepare_install_config(self):
+        # Remove the results of the previous configuration attempts.
+        self.delete_files('./Makefile', './config/Site.local')
+
+        # Generate an array of answers that will be passed to the interactive
+        # configuration script.
+        config_answers = [
+            # Enter Return to continue
+            '\n',
+            # Build NCL?
+            'y\n',
+            # Parent installation directory :
+            '\'' + self.spec.prefix + '\'\n',
+            # System temp space directory   :
+            '\'' + tempfile.mkdtemp(prefix='ncl_ncar_') + '\'\n',
+            # Build NetCDF4 feature support (optional)?
+            'y\n'
+        ]
+
+        if '+hdf4' in self.spec:
+            config_answers.extend([
+                # Build HDF4 support (optional) into NCL?
+                'y\n',
+                # Also build HDF4 support (optional) into raster library?
+                'y\n',
+                # Did you build HDF4 with szip support?
+                'y\n' if self.spec.satisfies('^hdf+szip') else 'n\n'
+            ])
+        else:
+            config_answers.extend([
+                # Build HDF4 support (optional) into NCL?
+                'n\n',
+                # Also build HDF4 support (optional) into raster library?
+                'n\n'
+            ])
+
+        config_answers.extend([
+            # Build Triangle support (optional) into NCL
+            'y\n' if '+triangle' in self.spec else 'n\n',
+            # If you are using NetCDF V4.x, did you enable NetCDF-4 support?
+            'y\n',
+            # Did you build NetCDF with OPeNDAP support?
+            'y\n',
+            # Build GDAL support (optional) into NCL?
+            'y\n' if '+gdal' in self.spec else 'n\n',
+            # Build Udunits-2 support (optional) into NCL?
+            'y\n' if '+uduints2' in self.spec else 'n\n',
+            # Build Vis5d+ support (optional) into NCL?
+            'n\n',
+            # Build HDF-EOS2 support (optional) into NCL?
+            'n\n',
+            # Build HDF5 support (optional) into NCL?
+            'y\n',
+            # Build HDF-EOS5 support (optional) into NCL?
+            'n\n',
+            # Build GRIB2 support (optional) into NCL?
+            'n\n',
+            # Enter local library search path(s) :
+            # The paths will be passed by the Spack wrapper.
+            ' \n',
+            # Enter local include search path(s) :
+            # All other paths will be passed by the Spack wrapper.
+            '\'' + join_path(self.spec['freetype'].prefix.include,
+                             'freetype2') + '\'\n',
+            # Go back and make more changes or review?
+            'n\n',
+            # Save current configuration?
+            'y\n'
+        ])
+
+        config_answers_filename = 'spack-config.in'
+        config_script = Executable('./Configure')
+
+        with open(config_answers_filename, 'w') as f:
+            f.writelines(config_answers)
+
+        with open(config_answers_filename, 'r') as f:
+            config_script(input=f)
+
+    def prepare_src_tree(self):
+        if '+triangle' in self.spec:
+            triangle_src = join_path(self.stage.source_path, 'triangle_src')
+            triangle_dst = join_path(self.stage.source_path, 'ni', 'src',
+                                     'lib', 'hlu')
+            shutil.copy(join_path(triangle_src, 'triangle.h'), triangle_dst)
+            shutil.copy(join_path(triangle_src, 'triangle.c'), triangle_dst)
+
+    @staticmethod
+    def delete_files(*filenames):
+        for filename in filenames:
+            if os.path.exists(filename):
+                try:
+                    os.remove(filename)
+                except OSError, e:
+                    raise InstallError('Failed to delete file %s: %s' % (
+                        e.filename, e.strerror))

var/spack/repos/builtin/packages/ncl/spack_ncl.patch

+--- a/config/ymake	2015-03-16 22:21:42.000000000 +0100
++++ b/config/ymake	2016-10-14 13:44:49.530646098 +0200
+@@ -537,0 +538,3 @@
++# We want to have our own definitions for spack
++set sysincs = Spack
++
+--- a/Configure	2015-03-16 22:22:17.000000000 +0100
++++ b/Configure	2016-10-14 13:49:42.157631106 +0200
+@@ -1137,5 +1137,13 @@
+-    if (! -d $incs[1]) then
+-      echo "  *** Warning: <$incs[1]> does not exist"
+-      echo ""
+-      goto proc_locincdir
+-    else 
++
++    # We don't want our path(s) to be preprocessed by cpp
++    # inside ymake script. That is why we pass them in quotes (')
++    # to this script. But if we do so, the following condition
++    # is always false. That is why we comment it out and promise
++    # to pass only correct path(s). You might want to do the same
++    # thing for the libraries search path(s).
++
++    # if (! -d $incs[1]) then
++    #   echo "  *** Warning: <$incs[1]> does not exist"
++    #   echo ""
++    #   goto proc_locincdir
++    # else 
+@@ -1143 +1151 @@
+-    endif
++    # endif