Disable all logs using ELPP_DISABLE_LOGS

[taschetto]

Greetings, folks.

I'm trying to disable logs whilst running my unit tests using ELPP_DISABLE_LOGS, but it doesn't work.

This feature is commented out in easylogging++.h. Is there any way that I can disable all logs?

Thank you in advance for your help.

[taschetto]

@mkhan3189 please, could you provide any help on this question?

[taschetto]

Moving to google/glog because of this issue. 👎 😞

[abumq]

Disable "Global" log in configuration. Sorry i have no access to computer at the moment but you can see how configurations work in README

[abumq]

https://github.com/easylogging/easyloggingpp/blob/master/README.md#using-configuration-file

[abumq]

By the way how are you using this macro (the one in question)? It's suppose to be available throughout the application so it's beat to define it via compiler flag to be safe (using -D)

[fkahhaleh]

@taschetto
it is very easy to swtich off logging via the config file.
In the different sections
(i.e Global, Warning, Verbose...etc)
you can Enable/Disable the Log for that secion, and it has two optiosn, LogToFile and LogToConsole.

A partial excerpt from a real-config file used in one of my projects:
* GLOBAL:
   FORMAT               =  "%datetime %msg"
   FILENAME             =  "D:\output.log"
   ENABLED              =  true         <--- Each ENABLED should be false and you are good to go.
   TO_FILE              =  true
   TO_STANDARD_OUTPUT   =  true
   MILLISECONDS_WIDTH   =  6
   PERFORMANCE_TRACKING =  true
   MAX_LOG_FILE_SIZE    =  1048576 ##2097152 ## 2MB - Comment starts with two hashes (##)
   LOG_FLUSH_THRESHOLD  =  10 ## Flush after every 100logs
* WARNING:
   FORMAT               =  "%msg"
   FILENAME             =  "D:\X.log"
   ENABLED              =  true         <--- And this as well.
   TO_FILE              =  true
   TO_STANDARD_OUTPUT   =  false
   MILLISECONDS_WIDTH   =  6
   PERFORMANCE_TRACKING =  true
   MAX_LOG_FILE_SIZE    =  1048576 ##2097152 ## 2MB - Comment starts with two hashes (##)
   LOG_FLUSH_THRESHOLD  =  10 ## Flush after every 10 logs

P.S, make sure to remove the <----- explanation as it is not a comment and will cause parsing error.

[Woundorf]

I have found that the macro doesn't work when compiling with gcc, but it works correctly when using clang or MSVC. If you want an example you can see here one build with gcc which shows default logs although ELPP_DISABLE_LOGS is used, and two builds with clang where logs are effectively disabled.

The macro is defined just before including easylogging++.h in the file with the main() mehod.

[abumq]

in multiple files project macros should be defined using -D flag of compiler rather than manually in header files.

[lasrod]

I can't use this preprocessor define either. Setting the ELPP_DISABLE_LOGS preprocessor flag does not turn off logging.

This macro should probably redefine LOG and CLOG macros to do nothing instead so that the internal structure of easyloggerpp is not run at all if this is defined.

I would like to completely turn off the logging in release mode and to have zero or close to zero impact on the performance of our code when this has been defined.

[goloap]

Same here. Tried using ELPP_DISABLE_LOGS in VS2013 by including it in the preprocessor macros and it doesn't seem to have any effect.

[goloap]

I've fixed this by changing 286 from
#define ELPP_LOGGING_ENABLED (!defined(ELPP_DISABLE_LOGS))

To:
#if defined(ELPP_DISABLE_LOGS)
#define ELPP_LOGGING_ENABLED 0
#else
#define ELPP_LOGGING_ENABLED 1
#endif

[taschetto]

Closing issue as it is resolved and/or worked around. :)