New Package:XSBench (#4751)

* New Package:XSBench

* minor changes

* replaced extend() with append()

* addressed comment.

* removed tags as per PR# 4749

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

@@ -0,0 +1,59 @@
+##############################################################################
+# 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 *
+
+
+class Xsbench(MakefilePackage):
+    """XSBench is a mini-app representing a key computational
+       kernel of the Monte Carlo neutronics application OpenMC.
+       A full explanation of the theory and purpose of XSBench
+       is provided in docs/XSBench_Theory.pdf."""
+
+    homepage = "https://github.com/ANL-CESAR/XSBench/"
+    url = "https://github.com/ANL-CESAR/XSBench/archive/v13.tar.gz"
+
+    version('13', '72a92232d2f5777fb52f5ea4082aff37')
+
+    variant('mpi', default=False, description='Build with MPI support')
+
+    depends_on('mpi', when='+mpi')
+
+    @property
+    def build_targets(self):
+
+        targets = [
+            '--directory=src',
+        ]
+
+        if '+mpi' in self.spec:
+            targets.append('MPI=yes')
+            targets.append('CC={0}'.format(self.spec['mpi'].mpicc))
+
+        return targets
+
+    def install(self, spec, prefix):
+        mkdir(prefix.bin)
+        install('src/XSBench', prefix.bin)