arrayfire: added new package at v3.7.0 (#15598)

Co-authored-by: Sinan81 <Sinan81@github>
Co-authored-by: Sinan81 <sbulut@3vgeomatics.com>

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

@@ -0,0 +1,46 @@
+# Copyright 2013-2020 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 Arrayfire(CMakePackage, CudaPackage):
+    """ArrayFire is a high performance software library for parallel computing
+    with an easy-to-use API. Its array based function set makes parallel
+    programming more accessible."""
+
+    homepage = "http://arrayfire.org/docs/index.htm"
+    git      = "https://github.com/arrayfire/arrayfire.git"
+
+    version('master', submodules=True)
+    version('3.7.0', submodules=True, tag='v3.7.0')
+
+    variant('cuda',   default=False, description='Enable Cuda backend')
+    variant('forge',   default=False, description='Enable graphics library')
+    variant('opencl', default=False, description='Enable OpenCL backend')
+
+    depends_on('boost@1.65:')
+    depends_on('fftw')
+    depends_on('blas')
+    depends_on('cuda@7.5:', when='+cuda')
+    depends_on('opencl +icd', when='+opencl')
+    # TODO add more opencl backends:
+    # currently only Cuda backend is enabled
+    # https://github.com/arrayfire/arrayfire/wiki/Build-Instructions-for-Linux#opencl-backend-dependencies
+
+    depends_on('fontconfig', when='+forge')
+    depends_on('glfw@3.1.4:', when='+forge')
+
+    def cmake_args(self):
+        args = []
+        args.extend([
+            '-DAF_BUILD_CUDA={0}'.format(
+                'ON' if '+cuda' in self.spec else 'OFF'),
+            '-DAF_BUILD_FORGE={0}'.format(
+                'ON' if '+forge' in self.spec else 'OFF'),
+            '-DAF_BUILD_OPENCL={0}'.format(
+                'ON' if '+opencl' in self.spec else 'OFF'),
+        ])
+        return args