Boostrapping the lammps package (#3032)

* First commit for the lammps package
* reviewed by adamjstewart and davydden

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

@@ -0,0 +1,53 @@
+##############################################################################
+# 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 Voropp(MakefilePackage):
+    """Voro++ is a open source software library for the computation of the
+    Voronoi diagram, a widely-used tessellation that has applications in many
+    scientific fields."""
+
+    homepage = "http://math.lbl.gov/voro++/about.html"
+
+    # This url is wrong but it passes the test the ++ make the url parser fail,
+    # the correct url is constructed by url_for_version that has to be used in
+    # any case due to the difference between the package name and the url
+    url      = "http://math.lbl.gov/voropp/download/dir/voropp-0.4.6.tar.gz"
+
+    version('0.4.6', '2338b824c3b7b25590e18e8df5d68af9')
+
+    def url_for_version(self, version):
+        url = "http://math.lbl.gov/voro++/download/dir/voro++-{0}.tar.gz".format(  # noqa: E501
+            str(version))
+        return url
+
+    def edit(self, spec, prefix):
+        filter_file(r'CC=g\+\+',
+                    'CC={0}'.format(self.compiler.cxx),
+                    'config.mk')
+        filter_file(r'PREFIX=/usr/local',
+                    'PREFIX={0}'.format(self.prefix),
+                    'config.mk')