Arduino read build date and time on tmElements_t

#include <Time.h>
#include <string.h>

void readBuildDate(tmElements_t * tm){
    char *token = strtok(__DATE__, " ");
    static const char month_names[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
    tm->Month = (strstr(month_names, token)-month_names)/3+1;
    token = strtok(NULL, " ");
    tm->Day = atoi(token);
    token = strtok(NULL, " ");
    tm->Year = CalendarYrToTm(atoi(token));
    token = strtok(__TIME__, ":");
    tm->Hour = atoi(token);
    token = strtok(NULL, ":");
    tm->Minute = atoi(token);
    token = strtok(NULL, ":");
    tm->Second = atoi(token);
}

void setup(){
        // USAGE:
    tmElements_t btm;
    readBuildDate(&btm);
}