text: # 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 Numdiff(AutotoolsPackage):
      """Numdiff is a little program that can be used to compare putatively
      similar files line by line and field by field, ignoring small numeric
      differences or/and different numeric formats."""
  
      homepage  = 'https://www.nongnu.org/numdiff'
      url       = 'http://nongnu.askapache.com/numdiff/numdiff-5.8.1.tar.gz'
  
      version('5.9.0', sha256='87284a117944723eebbf077f857a0a114d818f8b5b54d289d59e73581194f5ef')
      version('5.8.1', sha256='99aebaadf63325f5658411c09c6dde60d2990c5f9a24a51a6851cb574a4af503')
  
      variant('nls', default=False,
              description="Enable Natural Language Support")
      variant('gmp', default=False,
              description="Use GNU Multiple Precision Arithmetic Library")
  
      depends_on('gettext', when='+nls')
      depends_on('gmp', when='+gmp')
  
      def configure_args(self):
          spec = self.spec
          args = []
          if '+nls' in spec:
              args.append('--enable-nls')
          else:
              args.append('--disable-nls')
  
          if '+gmp' in spec:
              # compile with -O0 as per upstream known issue with optimization
              # and GMP; https://launchpad.net/ubuntu/+source/numdiff/+changelog
              # http://www.nongnu.org/numdiff/#issues
              # keep this variant off by default as one still encounter
              # GNU MP: Cannot allocate memory (size=2305843009206983184)
              args.extend([
                  '--enable-gmp',
                  'CFLAGS=-O0'
              ])
          else:
              args.append('--disable-gmp')
  
          return args
  