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  Log4cplus logging facility configuration, installation, testing
  Add Date : 2018-11-21      
  Log4cplus is written in C ++ open source logging system, which is very comprehensive, the initial use log4plus, described below under Linux log4cplus their own learning process configuration, installation and testing process.

1, log4cplus Introduction

log4cplus is written in C ++ open source logging system, was formerly written in java log4j system. License protected by the Apache Software. The author is Tad E. Smith. log4cplus thread-safe, flexible, and more granular control features, by prioritizing information so that it can be oriented programming commissioning, operation, testing, and maintenance life cycle; you can choose to output information to the screen, file, NT event log, and even a remote server; regular backups of the log by the specified policy.

2, log4cplus download

The latest log4cplus can be downloaded from the following URL.

log4cplus: http: //sourceforge.net/projects/log4cplus/

In RedHat Linux systems can use the following command to install:

wget http://sourceforeg.net/projects/log4cplus/files/log4cplus-stable/1.1.2/log4cplus-x.x.x.tar.gz

3, log4cplus installation

tar xvzf log4cplus-x.x.x.tar.gz

cd log4cplus-x.x.x



make install

4, log4cplus configuration

log4cplus default installation behind file path is / usr / local / include / log4cplus, installation files Road King library file is / usr / local / lib, edit the .bash_profile file to add the library file.

$ Vi ~ / .bash_profile

Add to:

LD_LIBRARY_PATH = LD_LIBRARY_PATH: / usr / local / lib


After adding source ~ / .bash_profile changes to take effect

$ Vi / etc / profile

Add to:



After adding source ~ / .bash_profile changes to take effect

5, the test

#include < log4cplus / logger.h>
#include < log4cplus / configurator.h>
#include < iomanip>
#include < log4cplus / logger.h>
#include < log4cplus / fileappender.h>
#include < log4cplus / consoleappender.h>

#include < log4cplus / loggingmacros.h>
#include < log4cplus / layout.h>
#include < time.h>
using namespace std;
using namespace log4cplus;
Logger pTestLogger;

void writelog (char * leval, char * info)
struct tm * p;
time_t lt = time (NULL);
p = localtime (<);
char * timetemp = ctime (<);
* (Timetemp + strlen (timetemp) -1) = '\ 0';
char temp [10000];
sprintf (temp, "[% s]% s", timetemp, info);
        printf ( "temp ==% s", temp);
printf ( "leval ====% s \ n", leval);
if (memcmp (leval, "TRACE", 5) == 0)
printf ( "% d ===% d", memcmp ( "TRACE", "TRAC1E", 5), memcmp (leval, "TRACE", 5));
LOG4CPLUS_TRACE (pTestLogger, temp);
if (memcmp (leval, "DEBUG", 5) == 0)
LOG4CPLUS_DEBUG (pTestLogger, temp);
if (memcmp (leval, "INFO", 4) == 0)
LOG4CPLUS_INFO (pTestLogger, temp);
if (memcmp (leval, "WARN", 4) == 0)
LOG4CPLUS_WARN (pTestLogger, temp);
if (memcmp (leval, "ERROR", 5) == 0)
LOG4CPLUS_ERROR (pTestLogger, temp);
if (memcmp (leval, "FATAL", 5) == 0)
LOG4CPLUS_FATAL (pTestLogger, temp);
int main ()
char * info = "you have a iuns";
char filename [50];
struct tm * p;
time_t lt = time (NULL);
p = localtime (<);
sprintf (filename, "% d-% d-% d.txt", (1900 + p-> tm_year), (1 + p-> tm_mon), p-> tm_mday);
FILE * stream = fopen (filename, "wb");
SharedAppenderPtr pFileAppender (new FileAppender ((filename)));
pTestLogger = Logger :: getInstance (( "LoggerName"));
pTestLogger.addAppender (pFileAppender);
writelog ( "TRACE", info);
writelog ( "DEBUG", info);
writelog ( "ERROR", info);
        return 0;

Compile command

g ++ filetime.cpp -I / usr / local / log4cplus / include / -L / usr / local / log4cplus / lib -llog4cplus -o filetime
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