LOG4cxx安装指南

简介：Log4shell是开放源代码项目Apache Logging Service的子项目log4j在shell下的实现，用于为shell程序提供日志功能，以便开发者对目标程序进行调试和审计。虽然shell可以方便的操作文件，但通过成熟的日志框架更方便我们对日志的记录与处理。

(1)Reference-ubuntu
(2)Reference-其它
(3)Reference-log4shell(该参考文档无法实现仅供参考)

1 下载源码

安装：
apr\apr-util、log4cxx

2 安装log4cxx步骤-ubuntu（已验证）

2.0 环境

Linux version 4.15.0-70-generic (buildd@lgw01-amd64-057) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.12))

2.1 安装apr

# ./configure --prefix=/usr/local
# make
# sudo make install

2.2 安装apr-util

# ./configure --prefix=/usr/local --with-apr=/usr/local
# make
# sudo make install

2.3 安装log4cxx

# ./configure --prefix=/usr/local/ --with-apr=/usr/local/ --with-apr-util=/usr/local/  --with-charset=utf-8 --with-logchar=utf-8

添加头文件
src/main/cpp/inputstreamreader.cpp添加#include <string.h>
src/main/cpp/socketoutputstream.cpp添加#include <string.h>
src/examples/cpp/console.cpp添加#include <string.h>；#include <stdio.h>；

# make
# sudo make install

3 测试

3.1 测试主函数

main.cpp

#include <log4cxx/logger.h>
#include <log4cxx/basicconfigurator.h>
#include <log4cxx/helpers/exception.h>
#include <log4cxx/propertyconfigurator.h>using namespace log4cxx;
using namespace log4cxx::helpers;LoggerPtr logger_file(Logger::getLogger("file"));//获取配置文件中file对应的句柄
LoggerPtr logger_file(Logger::getLogger("console"));//获取配置文件中console对应的句柄int main(){PropertyConfigurator::configure("./log4cxx.properties");//加载配置文件，下面会细说LOG4CXX_INFO(logger_file,"This is a test");return 0;
}

3.2 配置文件

log4cxx.properties

#设置日志level为INFO，fa为文件输出对象，ca为控制台输出对象
log4j.rootLogger=INFO,fa,ca
#设置日志对象
log4j.logger.console=INFO,ca
log4j.logger.file=INFO,fa
#不向默认对象（rootLogger）输出,因此信息只能输出到文件
log4j.additivity.file=false
#**************************
#控制台，同时也会输出到默认输出对象
#**************************
log4j.appender.ca=org.apache.log4j.ConsoleAppender
log4j.appender.ca.layout=org.apache.log4j.PatternLayout
log4j.appender.ca.layout.ConversionPattern=[%-5p][%d] : %m%n
#**************************
#设置日志文件信息，比如大小，时间格式
#**************************
log4j.appender.fa=org.apache.log4j.DailyRollingFileAppender
log4j.appender.fa.File=./log/today.log
log4j.appender.fa.Append=fasle
log4j.appender.fa.MaxFileSize=10MB
log4j.appender.fa.MaxBackupIndex=1000
log4j.appender.fa.DatePattern=yyyy-MM-dd
log4j.appender.fa.layout=org.apache.log4j.PatternLayout
log4j.appender.fa.layout.ConversionPattern=[%-5p][%d] : %m%n

3.2 配置环境变量(~/.bashrc的方法？)

export LD_LIBRARY_PATH=/usr/local/lib

或长期生效~/.bashrc

export LD_LIBRARY_PATH=/usr/local/lib
export PATH=$LD_LIBRARY_PATH:$PATH

# source ~/.bashrc
# echo $PATH        # 查看结果

3.3 编译

# g++ main.cpp -o test -llog4cxx

3.4 执行

进入log文件夹打印’today.log’日志

[INFO ][2020-02-19 20:02:01,477] : This is a test

4 移植log4cxx步骤-集中器（交叉编译没有寻找到log4cxx库，待解决）

(1)Reference-交叉编译-报错与解决

4.0 环境

Linux version 4.1.15-gee690fe-dirty (root@ubuntu) (gcc version 7.3.1 20180425 [linaro-7.3-2018.05 revision d29120a424ecfbc167ef90065c0eeb7f91977701] (Linaro GCC 7.3-2018.05) )

4.1 安装pcre

# ./configure --prefix=/home/pan/toolchain/log4shell/install/usr/local --host=arm-linux-gnueabihf CC=arm-linux-gnueabihf-gcc CXX=arm-linux-gnueabihf-g++ LD=arm-linux-gnueabihf-ld

4.2 移植apr

①

# ./configure --host=arm-linux-gnueabihf --prefix=/home/pan/toolchain/log4shell/install/usr/local  CC=arm-linux-gnueabihf-gcc CXX=arm-linux-gnueabihf-g++ LD=arm-linux-gnueabihf-ld ac_cv_file__dev_zero=yes ac_cv_func_setpgrp_void=yes apr_cv_tcp_nodelay_with_cork=yes ac_cv_sizeof_struct_iovec=8 --cache=arm-linux.cache

待测试

# export ARMROOTS=/home/pan/toolchain/gcc-linaro-arm-linux-gnueabihf-4.8-2013.10_linux/arm-linux-gnueabihf/libc

./configure --host=arm-linux-gnueabihf --prefix=$ARMROOTS/usr/apr   CC=arm-linux-gnueabihf-gcc CXX=arm-linux-gnueabihf-g++ LD=arm-linux-gnueabihf-ld ac_cv_file__dev_zero=yes ac_cv_func_setpgrp_void=yes apr_cv_tcp_nodelay_with_cork=yes ac_cv_sizeof_struct_iovec=8 --cache=arm-linux.cache

②

./arm-linux.cache添加如下代码

apr_cv_process_shared_works=yes
apr_cv_mutex_robust_shared=yes

③

./configure添加如下代码

1>源码位置:

{ $as_echo "$as_me:${as_lineno-$LINENO}: checking which format to use for apr_ssize_t" >&5
$as_echo_n "checking which format to use for apr_ssize_t... " >&6; }
...
$as_echo "%ld" >&6; }

上个代码后插入如下代码:（添加）

elif test "$ac_cv_sizeof_ssize_t" = "$ac_cv_sizeof_long_long";thenssize_t_fmt="lld"{ $as_echo "$as_me:${as_lineno-$LINENO}: result: %lld" >&5
$as_echo "%lld" >&6; }

衔接源代码：

elseas_fn_error $? "could not determine the proper format for apr_ssize_t" "$LINENO" 5
fi

2>源码位置：

{ $as_echo "$as_me:${as_lineno-$LINENO}: checking which format to use for apr_size_t" >&5
$as_echo_n "checking which format to use for apr_size_t... " >&6; }
...
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: %ld" >&5
$as_echo "%ld" >&6; }

上个代码后插入如下代码:（添加）

elif test "$ac_cv_sizeof_size_t" = "$ac_cv_sizeof_long_long"; thensize_t_fmt="lld"{ $as_echo "$as_me:${as_lineno-$LINENO}: result: %lld" >&5
$as_echo "%lld" >&6; }

衔接代码

elseas_fn_error $? "could not determine the proper format for apr_size_t" "$LINENO" 5
fi

# make
# sudo make install

4.3 移植apr-util

# ./configure --prefix=/home/pan/toolchain/log4shell/install/usr/local --with-apr=/home/pan/toolchain/log4shell/install/usr/local --host=arm-linux-gnueabihf CC=arm-linux-gnueabihf-gcc CXX=arm-linux-gnueabihf-g++ LD=arm-linux-gnueabihf-ld
# make
# sudo make install

4.3 安装log4cxx

# cd apache-log4cxx-0.10.0
# ./configure --host=arm-linux-gnueabihf --prefix=/home/pan/toolchain/log4shell/install/usr/log4cxx/ --with-apr=/home/pan/toolchain/log4shell/install/usr/local/ --with-apr-util=/home/pan/toolchain/log4shell/install/usr/local/  --with-charset=utf-8 --with-logchar=utf-8 CC=arm-linux-gnueabihf-gcc CXX=arm-linux-gnueabihf-g++

# make
# sudo make install

5 测试移植

5.1 配置环境变量

# export ARM_LD_LIBRARY_PATH=/home/pan/toolchain/log4shell/log4cxx

log4cxx放到如下目录下

/home/pan/toolchain/gcc-linaro-arm-linux-gnueabihf-4.8-2013.10_linux/arm-linux-gnueabihf/include/c++/4.8.2/log4cxx

log4cxx/lib下的文件导入到arm-linux…目录下：

root@ubuntu:/home/pan/toolchain/log4shell/install/usr/log4cxx/lib# cp -rf * /home/pan/toolchain/gcc-linaro-arm-linux-gnueabihf-4.8-2013.10_linux/arm-linux-gnueabihf/lib

5.2 编译（编译不过）

# arm-linux-gnueabihf-g++ main.cpp -o test -I/home/pan/toolchain/gcc-linaro-arm-linux-gnueabihf-4.8-2013.10_linux/arm-linux-gnueabihf/lib/arm-linux-gnueabi/log4cxx -llog4cxx

5.2.1 编译报错（未解决）

/home/pan/toolchain/gcc-linaro-arm-linux-gnueabihf-4.8-2013.10_linux/bin/ ../lib/gcc/arm-linux-gnueabihf/4.8.2/../../../../arm-linux-gnueabihf/bin/ld: warning: libaprutil-1.so.0, needed by /home/pan/toolchain/gcc-linaro-arm-linux-gnueabihf-4.8-2013.10_linux/bin/ ../lib/gcc/arm-linux-gnueabihf/4.8.2/../../../../arm-linux-gnueabihf/lib/liblog4cxx.so, not found (try using -rpath or -rpath-link)