date: make %N work without -lrt on glibc

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2010-06-18 02:55:48 +02:00
parent 5b1dfe609c
commit 4ebdae3777

View File

@ -93,6 +93,9 @@
//config: MMDDhhmm[[YY]YY][.ss] format.
#include "libbb.h"
#if ENABLE_FEATURE_DATE_NANO
# include <sys/syscall.h>
#endif
enum {
OPT_RFC2822 = (1 << 0), /* R */
@ -208,7 +211,9 @@ int date_main(int argc UNUSED_PARAM, char **argv)
#endif
} else {
#if ENABLE_FEATURE_DATE_NANO
clock_gettime(CLOCK_REALTIME, &ts);
/* libc has incredibly messy way of doing this,
* typically requiring -lrt. We just skip all this mess */
syscall(__NR_clock_gettime, CLOCK_REALTIME, &ts);
#else
time(&ts.tv_sec);
#endif