When a module is under LGPL, it is implicitly advertised as suitable for libraries. And libraries should be MT-safe (for 20 years already). So, such modules should be MT-safe.
Looking at the LGPLed time-related modules: * This one is already MT-safe: timespec * These need to be made MT-safe: strftime-fixes wcsftime ctime localtime mktime, mktime-internal timegm time_r strptime time_rz c-nstrftime, nstrftime parse-datetime, parse-datetime2 I will try to tackle them, in roughly the given order. Bruno
