+################################################################## clock_gettime
+clock_gettime_lib=
+AC_CHECK_LIB([c], [clock_gettime], [clock_gettime_lib=c], [
+ AC_CHECK_LIB([rt], [clock_gettime], [clock_gettime_lib=rt], [], [])
+])
+if test -n "$clock_gettime_lib"; then
+ AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [
+ define to 1 if clock_gettime() is supported])
+fi
+if test "$clock_gettime_lib" = "rt"; then
+ AC_SUBST(clock_gettime_ldflags, -lrt)
+fi