在 /usr/include/iso/time_iso.h 中找到:

struct  tm {    /* see ctime(3) */
        int     tm_sec;
        int     tm_min;
        int     tm_hour;
        int     tm_mday;
        int     tm_mon;
        int     tm_year;
        int     tm_wday;
        int     tm_yday;
        int     tm_isdst;
};


# grep "struct tm"  /usr/include/sys/*.h
/usr/include/sys/lc_core.h:struct tm;
/usr/include/sys/lc_core.h:             const struct tm *);
/usr/include/sys/lc_core.h:             struct tm *);
/usr/include/sys/lc_core.h:     struct tm       *(*getdate)(_LC_time_t *, const char *);
/usr/include/sys/lc_core.h:             const char *, const struct tm *);
/usr/include/sys/times.h:struct tms {
/usr/include/sys/times.h:struct tms32 {
/usr/include/sys/times.h:clock_t times(struct tms *);

# grep "struct tm"  /usr/include/*.h      
/usr/include/hbaapi.h:#include <time.h> /* Needed for struct tm */
/usr/include/hbaapi.h:    struct tm             build_date;
/usr/include/ima.h:typedef struct tm IMA_DATETIME;
/usr/include/png.h: * Two conversions are provided, both from time_t and struct tm.  There
/usr/include/png.h:/* Convert from a struct tm to png_time */
/usr/include/png.h:   struct tm FAR * ttime));
/usr/include/time.h:extern struct tm *gmtime_r(const time_t *_RESTRICT_KYWD,
/usr/include/time.h:                    struct tm *_RESTRICT_KYWD);
/usr/include/time.h:extern struct tm *localtime_r(const time_t *_RESTRICT_KYWD,
/usr/include/time.h:                    struct tm *_RESTRICT_KYWD);
/usr/include/time.h:extern char *__strptime_dontzero(const char *, const char *, struct tm *);
/usr/include/time.h:            struct tm *_RESTRICT_KYWD);
/usr/include/time.h:extern int ascftime(char *, const char *, const struct tm *);
/usr/include/time.h:extern struct tm *getdate(const char *);
/usr/include/time.h:extern struct tm *gmtime_r();
/usr/include/time.h:extern struct tm *localtime_r();
/usr/include/time.h:extern struct tm *getdate();
/usr/include/time.h:extern char *asctime_r(const struct tm *_RESTRICT_KYWD, char *_RESTRICT_KYWD);
/usr/include/time.h:extern char *__posix_asctime_r(const struct tm *_RESTRICT_KYWD,
/usr/include/time.h:asctime_r(const struct tm *_RESTRICT_KYWD __tm, char *_RESTRICT_KYWD __buf)
/usr/include/time.h:extern char *asctime_r(const struct tm *, char *, int);
/usr/include/time.h:    struct tm *__tm;

【 在 jiangjun2000 (%d) 的大作中提到: 】
: 你得找到struct tm的定义
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