Log and Debug Output

Introduction

For application output we use spdlog which is already integrated in OGS. Spdlog provides several verbosity levels which can be used with simple calls:

ERR("An error message!");
WARN("A warning message.");
INFO("An information message...");
DBUG("A debug message.");

As arguments you can use the same functionality as in {fmt} —a modern formatting library:

int foo = 42;
double boo = 3.14;
WARN("Foo is {}! Current value is {:10.2g}.", foo, boo);

For more information see the spdlog wiki .

On release builds the default log level is INFO, for debug builds it is DEBUG. The log level can be adjusted on the command line with -l <LOG_LEVEL> flag.

This article was written by Lars Bilke. If you are missing something or you find an error please reach out to us on our forum.
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