#ifdef HAVE_TRACING
+XBT_LOG_NEW_CATEGORY(instr, "Logging the behavior of the tracing system (used for Visualization/Analysis of simulations)");
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY (instr_config, instr, "Configuration");
+
#define OPT_TRACING "tracing"
#define OPT_TRACING_SMPI "tracing/smpi"
#define OPT_TRACING_SMPI_GROUP "tracing/smpi/group"