New package: elmer-fem (#10860)

Elmer finite element method solver; builds Elmer, ElmerICE and
contributed solvers with MPI support.

var/spack/repos/builtin/packages/elmer-fem/package.py

+# Copyright 2013-2019 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 ElmerFem(CMakePackage):
+    """Elmer is an open source multiphysical simulation software. It
+    includes physical models of fluid dynamics, structural mechanics,
+    electromagnetics, heat transfer and acoustics."""
+
+    homepage = "https://www.csc.fi/web/elmer"
+    url      = "https://github.com/ElmerCSC/elmerfem/archive/release-8.4.tar.gz"
+
+    version('8.4', sha256='cc3ce807d76798361592cc14952cdc3db1ad8f9bac038017514033ce9badc5b3')
+
+    variant('openmp', default=True, description='Enable OpenMP support.')
+    variant('mumps', default=False, description='Enable MUMPS support.')
+    variant('hypre', default=False, description='Enable Hypre support.')
+    variant('trilinos', default=False, description='Enable Trilinos support.')
+    variant('zoltan', default=False, description='Enable Zoltan support.')
+    variant('lua', default=False, description='Enable Lua support.')
+
+    depends_on('mpi')
+    depends_on('netcdf-fortran')
+    depends_on('blas')
+    depends_on('lapack')
+    depends_on('mumps', when='+mumps')
+    depends_on('hypre', when='+hypre')
+    depends_on('trilinos~hypre~zoltan~zoltan2', when='+trilinos')
+    depends_on('zoltan+fortran', when='+zoltan')
+    depends_on('lua@5.1.5', when='+lua')
+
+    def cmake_args(self):
+
+        spec = self.spec
+
+        args = ['-DWITH_ElmerIce=ON', '-DWITH_CONTRIB=ON', '-DWITH_MPI=ON']
+
+        if '+openmp' in spec:
+            args.append('-DWITH_OpenMP=ON')
+        else:
+            args.append('-DWITH_OpenMP=OFF')
+
+        if '+mumps' in spec:
+            args.append('-DWITH_Mumps=ON')
+        else:
+            args.append('-DWITH_Mumps=OFF')
+
+        if '+hypre' in spec:
+            args.append('-DWITH_Hypre=ON')
+        else:
+            args.append('-DWITH_Hypre=OFF')
+
+        if '+trilinos' in spec:
+            args.extend([
+                '-DWITH_Trilinos=ON',
+                '-DCMAKE_CXX_STANDARD=11',
+            ])
+        else:
+            args.append('-DWITH_Trilinos=OFF')
+
+        if '+lua' in spec:
+            args.extend([
+                '-DWITH_LUA=ON',
+                '-DUSE_SYSTEM_LUA=ON'
+            ])
+            if '%gcc' in spec:
+                args.append('-DCMAKE_Fortran_FLAGS=-ffree-line-length-none')
+
+        else:
+            args.append('-DWITH_LUA=OFF')
+
+        if '+zoltan' in spec:
+            args.extend([
+                '-DWITH_Zoltan=ON',
+                '-DUSE_SYSTEM_ZOLTAN=ON'
+            ])
+        else:
+            args.append('-DWITH_Zoltan=OFF')
+
+        return args
+
+    def setup_environment(self, spack_env, run_env):
+        run_env.set('ELMER_HOME', self.prefix)