code: def generate(env):
      
      java_javah = SCons.Tool.CreateJavaHBuilder(env)
      java_javah.emitter = emit_java_headers
  
      env['_JAVAHOUTFLAG']    = JavaHOutFlagGenerator
      env['JAVAH']            = 'javah'
      env['JAVAHFLAGS']       = SCons.Util.CLVar('')
      env['_JAVAHCLASSPATH']  = getJavaHClassPath
      env['JAVAHCOM']         = '$JAVAH $JAVAHFLAGS $_JAVAHOUTFLAG $_JAVAHCLASSPATH ${SOURCES.attributes.java_classname}'
      env['JAVACLASSSUFFIX']  = '.class'
docs: Add Builders and construction variables for javah to an Environment.