Index: compiler-rt/trunk/test/lit.common.cfg
===================================================================
--- compiler-rt/trunk/test/lit.common.cfg
+++ compiler-rt/trunk/test/lit.common.cfg
@@ -91,8 +91,10 @@
 if platform.system() == 'Windows' and '-win' in config.target_triple:
   config.environment['LIB'] = os.environ['LIB']
 
+config.available_features.add(config.host_os.lower())
+
 if re.match(r'^x86_64.*-linux', config.target_triple):
-      config.available_features.add("x86_64-linux")
+  config.available_features.add("x86_64-linux")
 
 # Use ugly construction to explicitly prohibit "clang", "clang++" etc.
 # in RUN lines.