[LIT] Add a clang_tools_extra_site_cfg to match the various other sit…

…e_cfg.

This doesn't seem ideal, perhaps we could just keep the llvm_site_cfg and have
other config (clang and clang-tools-extra) derive their site_cfg from that.

Suggestions/complaints/ideas welcome.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163171 91177308-0d34-0410-b5e6-96231b3b80d8

utils/llvm-lit/llvm-lit.in

@@ -18,10 +18,15 @@ builtin_parameters = {
     'llvm_site_config' : os.path.join(llvm_obj_root, 'test', 'lit.site.cfg')
     }
 
-clang_site_config = os.path.join(llvm_obj_root, 'tools', 'clang', 'test',
-                                 'lit.site.cfg')
-if os.path.exists(clang_site_config):
-    builtin_parameters['clang_site_config'] = clang_site_config
+clang_obj_root = os.path.join(llvm_obj_root, 'tools', 'clang')
+
+if os.path.exists(clang_obj_root):
+    builtin_parameters['clang_site_config'] = \
+        os.path.join(clang_obj_root, 'test', 'lit.site.cfg')
+    clang_tools_extra_obj_root = os.path.join(clang_obj_root, 'tools', 'extra')
+    if os.path.exists(clang_tools_extra_obj_root):
+        builtin_parameters['clang_tools_extra_site_config'] = \
+            os.path.join(clang_tools_extra_obj_root, 'test', 'lit.site.cfg')
 
 if __name__=='__main__':
     import lit