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Questions tagged [log4c]

Log4c is a C library for flexible logging to files, syslog and other destinations. It is modeled after the log4j Java library.

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Log4C - Allowing multiple appenders per category

I am using Log4C and enjoy the functionality but is lacking one feature: Multiple appenders per category. Quote from http://log4c.sourceforge.net/: "Future versions will handle multiple appenders per category". I need to output a single log message…
tentacles1349
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Creating a log file with current time

I am trying to do something similar to Appending current time to a new log file each time log4j is initialized. I am using log4c for logging. I would like to be able to create a new log file with each execution of the application. Is it possible to…
bobby
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log4c rollingpolicy append="true" not happening after calling log4c_fini()

As per our requirement we need to append the logs in a file until the given file size is reached. before reaching the file size as set 100MB we need to call log4c_fini() and after this we are calling log4c_init(). at this moment a new file is…
Simon
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CMake ExternalProject_add dependencies

I'm trying to build a project that includes log4c for the Jetson Nano. log4c is dependent on expat. expat has a CMakeLists.txt file and plays nicely with CMake. I'm having trouble telling log4c where the build output of expat lives to complete the…
Nick
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log4c - how can I ONLY see INFO messages?

I am using the latest version of LOG4C and am a little confused why I cannot control the INFO, WARN, DEBUG statements coming out to the screen? I have used LOG4J and it seemed to be easy to control whether DEBUG, INFO , WARN messages came out. Here…
Lynton Grice
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log4c link error in eclipse

Been trying to use log4c in an eclipse IDE. No matter what I try, I can't seem to resolve the __log4c_category_vlog reference in my link. I can see __log4c_category_vlog via an objdump of the liblog4c.a file, I've tried modifying some of the code in…
David B
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C Simple Logging Management

I'm currently using the not so sophisticated printf method of logging; and I'm wondering whether to use something like "log4c" "zlog" or "syslog" to better manage ongoing debug/informational output. I'm not asking for a "best" library for the task;…
justinzane
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Failed to use log4crc configuration file

I am trying to use log4c for my C application logging. For implementing rolling policy, I used log4c rolling file APIs. I understood from Log4C developers guide that the rolling policy could be achieved by editing the configuration file (log4crc). I…
Honey Sukesan
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How to use Apache webserver to log or redirect logs to an external program without piped logging

I have a requirement where httpd needs to write logs to an external program . If specified, nothing would be logged in the httpd.log and access.log files instead would be redirected , i am aware that the same can be accomplished using piped…
stackdoubts
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Log4cxx Error. Please initialize the log4cxx system properly

I´m running an application on a red hat image of docker. I have some .sh files but when executing them on the logs files I see this error: Log4cxx Please initialize the log4cxx system properly. Log4cxx is already installed
flteam
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log4c segmentation fault when calling rollingfile_udata_set_logdir

This is my code: const char *logdir = "."; const char *rollingpolicy_name = "rpolicy"; rollingfile_udata_t *rfup = NULL; log4c_appender_t* app = NULL; app = log4c_appender_get("rfileappender"); log4c_rollingpolicy_t *rollingpolicyp = NULL; rfup =…
Rony Tesler
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how to read logfile using log4c and print it

I have used log4c to write some logs to file, then I want to read the file,and show the logs at the terminal, but I can't find the API，If someone can help solve the problem,I will be very appreciated!!!
陈润泽
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log4c doesn't print to logfiles when starting program as a service with systemd

I have an application that uses log4c for logging. It has been working well for the last few months of development. Today I wrote a systemd service file for this application to run on startup. Now log4c doesn't generate any log files. Here is my…
Nick
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How to change log4c's default timezone?

I just installed log4c and log4c-devel on CentOS 6.x by yum. All works fine except the log time, it's slow for 8 hours Following is the output of my machine: [rafael@localhost ~]$ date Tue Jan 14 15:17:34 CST 2014 Following is the log produced by…
user3114268
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log4c does not work in service mode

I'm new to linux C programming And I am trying to write a service runnig on a CentOS host, log4c works as my logging module. Everything works just fine during developing and debbugging, but when I finally install and run it as a service, no logs…
Sean
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