[libcxx] r348871 - [libcxx] Only enable the availability LIT feature when we're testing libc++

[Louis Dionne]

Author: ldionne
Date: Tue Dec 11 10:05:38 2018
New Revision: 348871

URL: http://llvm.org/viewvc/llvm-project?rev=348871&view=rev
Log:
[libcxx] Only enable the availability LIT feature when we're testing libc++

Other standard libraries don't implement availability markup, so it doesn't
make sense to e.g. XFAIL tests based on availability markup outside of
libc++.

Modified:
    libcxx/trunk/utils/libcxx/test/config.py

Modified: libcxx/trunk/utils/libcxx/test/config.py
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/utils/libcxx/test/config.py?rev=348871&r1=348870&r2=348871&view=diff
==============================================================================
--- libcxx/trunk/utils/libcxx/test/config.py (original)
+++ libcxx/trunk/utils/libcxx/test/config.py Tue Dec 11 10:05:38 2018
@@ -407,8 +407,10 @@ class Configuration(object):
             if self.use_deployment:
                 self.add_deployment_feature('with_system_cxx_lib')
 
-        # Configure the availability feature.
-        if self.use_deployment:
+        # Configure the availability feature. Availability is only enabled
+        # with libc++, because other standard libraries do not provide
+        # availability markup.
+        if self.use_deployment and self.cxx_stdlib_under_test == 'libc++':
             self.config.available_features.add('availability')
             self.add_deployment_feature('availability')