New package: ArborX (#11474)

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

@@ -0,0 +1,49 @@
+# 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 Arborx(CMakePackage):
+    """ArborX is a performance-portable library for geometric search"""
+
+    homepage = "http://github.com/arborx/arborx"
+    url      = "https://github.com/arborx/arborx/archive/v0.8-beta.tar.gz"
+    git      = "https://github.com/arborx/arborx.git"
+
+    version('master', branch='master')
+    version('0.8-beta', sha256='d90254656df089b1321bf26d55f69d0db465fff12a972c446562ceaca5f090ad')
+
+    variant('cuda', default=False, description='enable Cuda backend')
+    variant('openmp', default=False, description='enable OpenMP backend')
+    variant('serial', default=True, description='enable Serial backend (default)')
+    variant('mpi', default=True, description='enable MPI')
+
+    depends_on('cmake@3.12:', type='build')
+    depends_on('cuda', when='+cuda')
+    depends_on('mpi', when='+mpi')
+
+    # ArborX relies on Kokkos to provide devices, thus having one-to-one match
+    # The only way to disable those devices is to make sure Kokkos does not
+    # provide them
+    depends_on('kokkos@2.7.00:+cuda+enable_lambda', when='+cuda')
+    depends_on('kokkos@2.7.00:+openmp', when='+openmp')
+    depends_on('kokkos@2.7.00:+serial', when='+serial')
+
+    def cmake_args(self):
+        spec = self.spec
+
+        options = [
+            '-DCMAKE_PREFIX_PATH=%s' % spec['kokkos'].prefix,
+            '-DArborX_ENABLE_TESTS=OFF',
+            '-DArborX_ENABLE_EXAMPLES=OFF',
+            '-DArborX_ENABLE_MPI=%s' % ('ON' if '+mpi' in spec else 'OFF')
+        ]
+
+        if '+cuda' in spec:
+            nvcc_wrapper_path = spec['kokkos'].prefix.bin.nvcc_wrapper
+            options.append('-DCMAKE_CXX_COMPILER=%s' % nvcc_wrapper_path)
+
+        return options