neko: add new package (#28791)

Co-authored-by: Massimiliano Culpo <massimiliano.culpo@gmail.com>

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

@@ -0,0 +1,42 @@
+# Copyright 2013-2022 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 Neko(AutotoolsPackage, CudaPackage, ROCmPackage):
+    """Neko: A modern, portable, and scalable framework
+       for high-fidelity computational fluid dynamics
+    """
+
+    homepage = "https://github.com/ExtremeFLOW/neko"
+    git      = "https://github.com/ExtremeFLOW/neko.git"
+    maintainers = ['njansson']
+
+    version('0.3.0', commit='a82097a10ae3c965fb873da909a6324c7a7742fb')
+    version('develop', branch='develop')
+    variant('parmetis', default=False, description='Build with support for parmetis')
+    variant('xsmm', default=False, description='Build with support for libxsmm')
+
+    depends_on('autoconf', type='build')
+    depends_on('automake', type='build')
+    depends_on('libtool',  type='build')
+    depends_on('m4',       type='build')
+    depends_on('pkgconf',  type='build')
+    depends_on('parmetis', when='+parmetis')
+    depends_on('libxsmm',  when='+xsmm')
+    depends_on('mpi')
+    depends_on('blas')
+    depends_on('lapack')
+
+    def configure_args(self):
+        args = []
+        args += self.with_or_without('parmetis')
+        args += self.with_or_without('libxsmm', variant='xsmm')
+        args += self.with_or_without('cuda', activation_value='prefix')
+        rocm_fn = lambda x: spec['hip'].prefix
+        args += self.with_or_without('hip', variant='rocm', activation_value=rocm_fn)
+
+        return args