mpas-model: New package. (#21124)

* mpas-model: New package.

* remove pnetcdf variant.
remove debug print.

* remove unnessesary line.

* style fix.

var/spack/repos/builtin/packages/mpas-model/makefile.patch

@@ -0,0 +1,13 @@
+--- spack-src/Makefile.org	2021-01-06 10:11:15.852202444 +0900
++++ spack-src/Makefile	2021-01-06 10:35:16.191769328 +0900
+@@ -459,8 +459,10 @@
+ # Keep open the possibility of shared libraries in future with, e.g., .so suffix
+ #
+ ifneq ($(wildcard $(PIO_LIB)/libpio\.*), )
++ifneq ($(wildcard $(PIO_LIB)/libpio\.*),$(PIO_LIB)/libpio.settings)
+ 	LIBS += -lpio
+ endif
++endif
+ ifneq ($(wildcard $(PIO_LIB)/libpiof\.*), )
+ 	LIBS += -lpiof
+ endif

var/spack/repos/builtin/packages/mpas-model/package.py

@@ -0,0 +1,83 @@
+# 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 MpasModel(MakefilePackage):
+    """The Model for Prediction Across Scales (MPAS) is a collaborative
+    project for developing atmosphere, ocean and other earth-system
+    simulation components for use in climate, regional climate and weather
+    studies."""
+
+    homepage = "https://mpas-dev.github.io/"
+    url = "https://github.com/MPAS-Dev/MPAS-Model/archive/v7.0.tar.gz"
+
+    version('7.0', sha256='f898ce257e66cff9e29320458870570e55721d16cb000de7f2cc27de7fdef14f')
+    version('6.3', sha256='e7f1d9ebfeb6ada37d42a286aaedb2e69335cbc857049dc5c5544bb51e7a8db8')
+    version('6.2', sha256='2a81825a62a468bf5c56ef9d9677aa2eb88acf78d4f996cb49a7db98b94a6b16')
+
+    depends_on('mpi')
+    depends_on('parallelio')
+
+    patch('makefile.patch', when='@7.0')
+
+    parallel = False
+
+    def target(self, model, action):
+        spec = self.spec
+        satisfies = spec.satisfies
+        fflags = [self.compiler.openmp_flag]
+        cppflags = ['-D_MPI']
+        if satisfies('%gcc'):
+            fflags.extend([
+                '-ffree-line-length-none',
+                '-fconvert=big-endian',
+                '-ffree-form',
+                '-fdefault-real-8',
+                '-fdefault-double-8',
+            ])
+            cppflags.append('-DUNDERSCORE')
+        elif satisfies('%fj'):
+            fflags.extend([
+                '-Free',
+                '-Fwide',
+                '-CcdRR8',
+            ])
+            cppflags.append('-DUNDERSCORE')
+        targets = [
+            'FC_PARALLEL={0}'.format(spec['mpi'].mpifc),
+            'CC_PARALLEL={0}'.format(spec['mpi'].mpicc),
+            'CXX_PARALLEL={0}'.format(spec['mpi'].mpicxx),
+            'FC_SERIAL={0}'.format(spack_fc),
+            'CC_SERIAL={0}'.format(spack_cc),
+            'CXX_SERIAL={0}'.format(spack_cxx),
+            'CFLAGS_OMP={0}'.format(self.compiler.openmp_flag),
+            'FFLAGS_OMP={0}'.format(' '.join(fflags)),
+            'CPPFLAGS={0}'.format(' '.join(cppflags)),
+            'PIO={0}'.format(spec['parallelio'].prefix),
+            'NETCDF={0}'.format(spec['netcdf-c'].prefix),
+            'NETCDFF={0}'.format(spec['netcdf-fortran'].prefix)
+        ]
+        if satisfies('^parallelio+pnetcdf'):
+            targets.append(
+                'PNETCDF={0}'.format(spec['parallel-netcdf'].prefix)
+            )
+        targets.extend([
+            'USE_PIO2=true', 'CPP_FLAGS=-D_MPI', 'OPENMP=true',
+            'CORE={0}'.format(model), action
+        ])
+        return targets
+
+    def build(self, spec, prefix):
+        make(*self.target('init_atmosphere', 'all'))
+        mkdir('bin')
+        copy('init_atmosphere_model', 'bin')
+        make(*self.target('init_atmosphere', 'clean'))
+        make(*self.target('atmosphere', 'all'))
+        copy('atmosphere_model', 'bin')
+
+    def install(self, spec, prefix):
+        install_tree('bin', prefix.bin)