How to configure PatternLayout to use __FUNCTION__ about log4cplus HOT 7 OPEN

You can do that by redefining the LOG4CPLUS_MACRO_FUNCTION() function macro. The sequence should be something like this:

#include <log4cplus/loggingmacros.h>
#undef LOG4CPLUS_MACRO_FUNCTION
#define LOG4CPLUS_MACRO_FUNCTION() __FUNCTION__

Undef and define the macro after the loggingmacros.h has been included.

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Thank you, yeah this fulfills my requirements.

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This works when I have this library as shared, but when I try it as a static library, no matter what I do, the default 'PRETTY_FUNCTION' is still used. I can't change it even when I redefine that macro. It does nothing. I also tried editing the config and defines.hxx in includes, but 'PRETTY_FUNCTION' is still set as the default. I want to change it to FUNCTION. Another question: wouldn't it be better to have another flag in the configurator that differentiates between 'func', FUNCTION, and PRETTY_FUNCTION? It would be easier to configure.

I am using latest version of log4cplus.

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It is a macro, it is active where it is used. If you compile the code that uses the macro into a binary or a library, you can't change it afterwards.

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I have found it the hard way, but I would need to set the function macro persistently to FUNCTION but when i tried to redefine that config.hxx and defines.hxx before compilation still PRETTY_FUNCTION was used

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You have to use it in the way I have shown:

#include <log4cplus/loggingmacros.h>
#undef LOG4CPLUS_MACRO_FUNCTION
#define LOG4CPLUS_MACRO_FUNCTION() __FUNCTION__

You cannot do it any other way.

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"I think we don't understand each other. This is an example program.

#include <log4cplus/initializer.h>
#include <log4cplus/logger.h>
#include <log4cplus/configurator.h>

#include <log4cplus/loggingmacros.h>
#undef LOG4CPLUS_MACRO_FUNCTION
#define LOG4CPLUS_MACRO_FUNCTION() __FUNCTION__

using namespace std;
using namespace log4cplus;
using namespace log4cplus::helpers;

int main(const int argc, char* argv[]) {
    Initializer initializer;
    Logger root = Logger::getRoot();
    PropertyConfigurator::doConfigure("log4cplus.properties");

    LOG4CPLUS_WARN(root, "Modem timeout");

    return 0;
}

No matter what I define on that macro FUNCTION PRETTY_FUNCTION func, the output is always like this:

[WARN ] 2024-02-03 08:20:34 (main.cpp: int main(int, char**)) 46: Modem timeout

When I had this library as a .so, everything worked correctly. However, when I try to use it as a .a library, it doesn't work."

expected output will be something like this:

[WARN ] 2024-02-03 08:20:34 (main.cpp: main) 46: Modem timeout

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