code: def generate(env):
      
      # ifort supports Fortran 90 and Fortran 95
      # Additionally, ifort recognizes more file extensions.
      fscan = FortranScan("FORTRANPATH")
      SCons.Tool.SourceFileScanner.add_scanner('.i', fscan)
      SCons.Tool.SourceFileScanner.add_scanner('.i90', fscan)
  
      if 'FORTRANFILESUFFIXES' not in env:
          env['FORTRANFILESUFFIXES'] = ['.i']
      else:
          env['FORTRANFILESUFFIXES'].append('.i')
  
      if 'F90FILESUFFIXES' not in env:
          env['F90FILESUFFIXES'] = ['.i90']
      else:
          env['F90FILESUFFIXES'].append('.i90')
  
      add_all_to_env(env)
  
      fc = 'ifort'
  
      for dialect in ['F77', 'F90', 'FORTRAN', 'F95']:
          env['%s' % dialect] = fc
          env['SH%s' % dialect] = '$%s' % dialect
          if env['PLATFORM'] == 'posix':
              env['SH%sFLAGS' % dialect] = SCons.Util.CLVar('$%sFLAGS -fPIC' % dialect)
  
      if env['PLATFORM'] == 'win32':
          # On Windows, the ifort compiler specifies the object on the
          # command line with -object:, not -o.  Massage the necessary
          # command-line construction variables.
          for dialect in ['F77', 'F90', 'FORTRAN', 'F95']:
              for var in ['%sCOM' % dialect, '%sPPCOM' % dialect,
                          'SH%sCOM' % dialect, 'SH%sPPCOM' % dialect]:
                  env[var] = env[var].replace('-o $TARGET', '-object:$TARGET')
          env['FORTRANMODDIRPREFIX'] = "/module:"
      else:
          env['FORTRANMODDIRPREFIX'] = "-module "
docs: Add Builders and construction variables for ifort to an Environment.