code: def add_f03_to_env(env):
      
      try:
          F03Suffixes = env['F03FILESUFFIXES']
      except KeyError:
          F03Suffixes = ['.f03']
  
      #print("Adding %s to f95 suffixes" % F95Suffixes)
      try:
          F03PPSuffixes = env['F03PPFILESUFFIXES']
      except KeyError:
          F03PPSuffixes = []
  
      DialectAddToEnv(env, "F03", F03Suffixes, F03PPSuffixes,
                      support_module = 1)
docs: Add Builders and construction variables for f03 to an Environment.