AC_SEARCH_LIBS([clock_getcpuclockid], [rt posix4],
[test "$ac_cv_search_clock_getcpuclockid" = "none required" \
|| LIB_CLOCK_GETTIME=$ac_cv_search_clock_getcpuclockid],
- [LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime])
+ [test "$ac_cv_search_clock_gettime" = "none required" \
+ || LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime])
else
LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime
fi])