text: # 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 Nektar(CMakePackage):
      """Nektar++: Spectral/hp Element Framework"""
  
      homepage = "https://www.nektar.info/"
      url      = "https://gitlab.nektar.info/nektar/nektar/-/archive/v4.4.1/nektar-v4.4.1.tar.bz2"
  
      version('4.4.1', sha256='71cfd93d848a751ae9ae5e5ba336cee4b4827d4abcd56f6b8dc5c460ed6b738c')
  
      variant('mpi', default=True, description='Builds with mpi support')
      variant('fftw', default=True, description='Builds with fftw support')
      variant('arpack', default=True, description='Builds with arpack support')
      variant('hdf5', default=True, description='Builds with hdf5 support')
      variant('scotch', default=False,
              description='Builds with scotch partitioning support')
  
      depends_on('cmake@2.8.8:', type='build', when="~hdf5")
      depends_on('cmake@3.2:', type='build', when="+hdf5")
  
      depends_on('blas')
      depends_on('lapack')
      depends_on('boost@1.56.0: +iostreams')
      depends_on('tinyxml', when='platform=darwin')
  
      depends_on('mpi', when='+mpi')
      depends_on('fftw@3.0: +mpi', when="+mpi+fftw")
      depends_on('fftw@3.0: ~mpi', when="~mpi+fftw")
      depends_on('arpack-ng +mpi', when="+arpack+mpi")
      depends_on('arpack-ng ~mpi', when="+arpack~mpi")
      depends_on('hdf5 +mpi +hl', when="+mpi+hdf5")
      depends_on('scotch ~mpi ~metis', when="~mpi+scotch")
      depends_on('scotch +mpi ~metis', when="+mpi+scotch")
  
      conflicts("+hdf5", when="~mpi",
                msg="Nektar's hdf5 output is for parallel builds only")
  
      def cmake_args(self):
          args = []
  
          def hasfeature(feature):
              return 'ON' if feature in self.spec else 'OFF'
  
          args.append('-DNEKTAR_USE_MPI=%s' % hasfeature('+mpi'))
          args.append('-DNEKTAR_USE_FFTW=%s' % hasfeature('+fftw'))
          args.append('-DNEKTAR_USE_ARPACK=%s' % hasfeature('+arpack'))
          args.append('-DNEKTAR_USE_HDF5=%s' % hasfeature('+hdf5'))
          args.append('-DNEKTAR_USE_SCOTCH=%s' % hasfeature('+scotch'))
          args.append('-DNEKTAR_USE_PETSC=OFF')
          return args
  