log.c
A simple logging library implemented in C99
log.c is a compact logging library implemented in C99 for projects that need useful runtime diagnostics without pulling in a large dependency. It provides six familiar logging levels, from trace through fatal, and uses printf-style formatting so developers can add structured messages with minimal learning curve. By default, it writes readable log lines to stderr with timestamps, levels, source file names, and line numbers. It also supports quiet mode, configurable log levels, file outputs, custom callbacks, and optional thread locking for multi-threaded programs. ...