acinclude.m4: Make --enable-libstdcxx-time=auto work for dragonfly.

	* acinclude.m4: Make --enable-libstdcxx-time=auto work for dragonfly.
	* configure: Regenerate.

From-SVN: r221414

libstdc++-v3/ChangeLog

+2015-03-13  Jonathan Wakely  <jwakely@redhat.com>
+
+	* acinclude.m4: Make --enable-libstdcxx-time=auto work for dragonfly.
+	* configure: Regenerate.
+
 2015-03-12  Renlin Li  <renlin.li@arm.com>
 
 	* testsuite/27_io/ios_base/sync_with_stdio/1.cc: Remove xfail for

libstdc++-v3/acinclude.m4

@@ -1221,7 +1221,7 @@ AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [
         ac_has_nanosleep=yes
         ac_has_sched_yield=yes
         ;;
-      freebsd*|netbsd*)
+      freebsd*|netbsd*|dragonfly*)
         ac_has_clock_monotonic=yes
         ac_has_clock_realtime=yes
         ac_has_nanosleep=yes

libstdc++-v3/configure

@@ -19551,7 +19551,7 @@ $as_echo "$glibcxx_glibc217" >&6; }
         ac_has_nanosleep=yes
         ac_has_sched_yield=yes
         ;;
-      freebsd*|netbsd*)
+      freebsd*|netbsd*|dragonfly*)
         ac_has_clock_monotonic=yes
         ac_has_clock_realtime=yes
         ac_has_nanosleep=yes