text: # Copyright 2013-2021 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 Gmsh(CMakePackage):
      """Gmsh is a free 3D finite element grid generator with a built-in CAD engine
      and post-processor. Its design goal is to provide a fast, light and
      user-friendly meshing tool with parametric input and advanced visualization
      capabilities. Gmsh is built around four modules: geometry, mesh, solver and
      post-processing. The specification of any input to these modules is done
      either interactively using the graphical user interface or in ASCII text
      files using Gmsh's own scripting language.
      """
  
      homepage = 'https://gmsh.info'
      url = 'https://gmsh.info/src/gmsh-4.4.1-source.tgz'
      git = 'https://gitlab.onelab.info/gmsh/gmsh.git'
  
      version('master', branch='master')
      version('4.8.4', sha256='760dbdc072eaa3c82d066c5ba3b06eacdd3304eb2a97373fe4ada9509f0b6ace')
      version('4.7.1', sha256='c984c295116c757ed165d77149bd5fdd1068cbd7835e9bcd077358b503891c6a')
      version('4.7.0', sha256='e27f32f92b374ba2a746a9d9c496401c13f66ac6e3e70753e16fa4012d14320e')
      version('4.6.0', sha256='0f2c55e50fb6c478ebc8977f6341c223754cbf3493b7b0d683b4395ae9f2ad1c')
      version('4.5.6', sha256='46eaeb0cdee5822fdaa4b15f92d8d160a8cc90c4565593cfa705de90df2a463f')
      version('4.5.5', sha256='899d3cded664124fa387da57b6f170f47a7e712c7744aa3562779897e2b9e251')
      version('4.5.4', sha256='ccf8c74f43cbe3c371abe79862025d41642b3538a0148f018949494e3b3e2ecd')
      version('4.4.1', sha256='853c6438fc4e4b765206e66a514b09182c56377bb4b73f1d0d26eda7eb8af0dc')
      version('4.2.2', sha256='e9ee9f5c606bbec5f2adbb8c3d6023c4e2577f487fa4e4ecfcfc94a241cc8dcc')
      version('4.0.0',  sha256='fb0c8afa37425c6f4315ab3b3124e9e102fcf270a35198423a4002796f04155f')
      version('3.0.6',  sha256='9700bcc440d7a6b16a49cbfcdcdc31db33efe60e1f5113774316b6fa4186987b')
      version('3.0.1',  sha256='830b5400d9f1aeca79c3745c5c9fdaa2900cdb2fa319b664a5d26f7e615c749f')
      version('2.16.0', sha256='e829eaf32ea02350a385202cc749341f2a3217c464719384b18f653edd028eea')
      version('2.15.0', sha256='992a4b580454105f719f5bc05441d3d392ab0b4b80d4ea07b61ca3bdc974070a')
      version('2.12.0', sha256='7fbd2ec8071e79725266e72744d21e902d4fe6fa9e7c52340ad5f4be5c159d09')
  
      variant('shared',      default=True,  description='Enables the build of shared libraries')
      variant('mpi',         default=False, description='Builds MPI support for parser and solver')
      variant('openmp',      default=False, description='Enable OpenMP support')
      variant('fltk',        default=True,  description='Enables the build of the FLTK GUI')
      variant('hdf5',        default=False, description='Enables HDF5 support')
      variant('gmp',         default=True,  description='Enable GMP for Kbipack (advanced)')
      variant('cairo',       default=False, description='Enable Cairo to render fonts (experimental)')
      variant('compression', default=True,  description='Enables IO compression through zlib')
      variant('med',         default=True,  description='Build with MED(HDF5)')
      variant('mmg',         default=True,  description='Build with Mmg3d')
      variant('netgen',      default=True,  description='Build with Netgen')
      variant('opencascade', default=False, description='Build with OpenCASCADE')
      variant('oce',         default=False, description='Build with OCE')
      variant('petsc',       default=False, description='Build with PETSc')
      variant('slepc',       default=False, description='Build with SLEPc (only when PETSc is enabled)')
      variant('tetgen',      default=False, description='Build with Tetgen')
      variant('metis',       default=True,  description='Build with Metis')
      variant('privateapi',  default=False, description='Enable the private API')
      variant('eigen',       default=False, description='Build with Eigen')
      variant('cgns',        default=True,  description='Build with CGNS')
  
      # https://gmsh.info/doc/texinfo/gmsh.html#Compiling-the-source-code
      # We make changes to the GMSH default, such as external blas.
      depends_on('blas',    when='~eigen')
      depends_on('lapack',  when='~eigen')
      depends_on('cmake@2.8:', type='build')
      depends_on('gmp',  when='+gmp')
      depends_on('mpi',  when='+mpi')
      # Assumes OpenGL with GLU is already provided by the system:
      depends_on('fltk+gl', when='+fltk')
      depends_on('cairo',   when='+cairo')
      depends_on('hdf5',    when='+hdf5')
      depends_on('med',     when='+med')
      depends_on('mmg',     when='+mmg')
      depends_on('opencascade', when='+opencascade')
      depends_on('oce',     when='+oce')
      depends_on('petsc+mpi', when='+petsc+mpi')
      depends_on('petsc~mpi', when='+petsc~mpi')
      depends_on('slepc',   when='+slepc+petsc')
      depends_on('zlib',    when='+compression')
      depends_on('metis',   when='+metis')
      depends_on('cgns',    when='+cgns')
      # Gmsh's high quality vector PostScript, PDF and SVG output is produced by GL2PS.
      depends_on('gl2ps')
  
      conflicts('+slepc', when='~petsc')
      conflicts('+oce', when='+opencascade')
  
      def cmake_args(self):
          spec = self.spec
  
          options = [
              self.define_from_variant('CAIRO'),
              self.define_from_variant('CGNS'),
              self.define_from_variant('EIGEN'),
              self.define_from_variant('FLTK'),
              self.define_from_variant('GMP'),
              self.define_from_variant('MED'),
              self.define_from_variant('METIS'),
              self.define_from_variant('MMG'),
              self.define_from_variant('MPI'),
              self.define_from_variant('NETGEN'),
              self.define_from_variant('OPENMP'),
              self.define_from_variant('PETSC'),
              self.define_from_variant('PRIVATE_API', 'privateapi'),
              self.define_from_variant('SLEPC'),
          ]
  
          # Make sure native file dialogs are used
          options.append('-DENABLE_NATIVE_FILE_CHOOSER=ON')
  
          options.append('-DCMAKE_INSTALL_NAME_DIR:PATH=%s' % self.prefix.lib)
  
          # Prevent GMsh from using its own strange directory structure on OSX
          options.append('-DENABLE_OS_SPECIFIC_INSTALL=OFF')
  
          # Make sure GMSH picks up correct BlasLapack by providing linker flags
          if '~eigen' in spec:
              options.append('-DENABLE_BLAS_LAPACK=ON')
              blas_lapack = spec['lapack'].libs + spec['blas'].libs
              options.append(
                  '-DBLAS_LAPACK_LIBRARIES={0}'.format(blas_lapack.ld_flags))
  
          if '+oce' in spec:
              options.append('-DENABLE_OCC=ON')
          elif '+opencascade' in spec:
              options.append('-DENABLE_OCC=ON')
          else:
              options.append('-DENABLE_OCC=OFF')
  
          if '@:3.0.6' in spec:
              options.append(self.define_from_variant('tetgen'))
  
          if '@:4.6' in spec:
              options.append(self.define_from_variant('ENABLE_MMG3D', 'mmg'))
  
          if '+shared' in spec:
              # Builds dynamic executable and installs shared library
              options.extend(['-DENABLE_BUILD_SHARED:BOOL=ON',
                              '-DENABLE_BUILD_DYNAMIC:BOOL=ON'])
          else:
              # Builds and installs static library
              options.append('-DENABLE_BUILD_LIB:BOOL=ON')
  
          if '+compression' in spec:
              options.append('-DENABLE_COMPRESSED_IO:BOOL=ON')
  
          return options
  