2019-05-21 Jonathan Wakely <jwakely@redhat.com>
+ PR libstdc++/90252
+ * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
+ Use "additional_flags" to pass -ltbb to v3_target_compile command.
+ Use check_v3_target_prop_cached to cache the result of the test.
+
* doc/xml/manual/shared_ptr.xml: Fix names of lock policy constants.
2019-05-20 Thomas Rodgers <trodgers@redhat.com>