log4cpp使用问题

// FileName: test_log4cpp1.cpp
// Test log4cpp by manual operation.
// Announce: use as your own risk.
// Compile : g++ -otest1 -llog4cpp test_log4cpp1.cpp
// Run : ./test1
// Tested : RedHat 7.2 log4cpp0.3.4b
// Author : liqun (liqun@nsfocus.com)
// Data : 2003-6-27
#include "log4cpp/Category.hh"
#include "log4cpp/FileAppender.hh"
#include "log4cpp/BasicLayout.hh"
int main(int argc, char* argv[])
{
// 1实例化一个layout 对象
log4cpp::Layout* layout =
new log4cpp::BasicLayout();
// 2. 初始化一个appender 对象
log4cpp::Appender* appender = new
log4cpp::FileAppender("FileAppender",
"./test_log4cpp1.log");
// 3. 把layout对象附着在appender对象上
appender->setLayout(layout);
// 4. 实例化一个category对象
log4cpp::Category& warn_log =
log4cpp::Category::getInstance("mywarn");
// 5. 设置additivity为false，替换已有的appender
warn_log.setAdditivity(false);
// 5. 把appender对象附到category上
warn_log.setAppender(appender);
// 6. 设置category的优先级，低于此优先级的日志不被记录
warn_log.setPriority(log4cpp::Priority::WARN);
// 记录一些日志
warn_log.info("Program info which cannot be wirten");
warn_log.debug("This debug message will fail to write");
warn_log.alert("Alert info");
// 其他记录日志方式
warn_log.log(log4cpp::Priority::WARN, "This will be a logged warning");
log4cpp::Priority::PriorityLevel priority;
bool this_is_critical = true;
if(this_is_critical)
priority = log4cpp::Priority::CRIT;
else
priority = log4cpp::Priority::DEBUG;
warn_log.log(priority,"Importance depends on context");

warn_log.critStream() << "This will show up << as "
<< 1 << " critical message"
<< log4cpp::CategoryStream::ENDLINE;
// clean up and flush all appenders
log4cpp::Category::shutdown();
return 0;
}

=============
以上是从网上找来学习log4cpp的例子代码。
g++ 编译时，报告“ENDLINE 不是 CategoryStream 的成员”的错误。
从文件时间看是比较早的，而我用的是1.0版的库。
请熟悉log4cpp的达人的指点迷津了。谢谢！