diff --git a/lib/LLVMBuild.txt b/lib/LLVMBuild.txt
index 19389519ca2..a6cd15699fb 100644
--- a/lib/LLVMBuild.txt
+++ b/lib/LLVMBuild.txt
@@ -44,6 +44,7 @@ subdirectories =
  ToolDrivers
  Transforms
  WindowsManifest
+ XRay
 
 [component_0]
 type = Group
diff --git a/lib/XRay/LLVMBuild.txt b/lib/XRay/LLVMBuild.txt
new file mode 100644
index 00000000000..904168dad93
--- /dev/null
+++ b/lib/XRay/LLVMBuild.txt
@@ -0,0 +1,23 @@
+;===- ./lib/XRay/LLVMBuild.txt ---------------------------------*- Conf -*--===;
+;
+;                     The LLVM Compiler Infrastructure
+;
+; This file is distributed under the University of Illinois Open Source
+; License. See LICENSE.TXT for details.
+;
+;===------------------------------------------------------------------------===;
+;
+; This is an LLVMBuild description file for the components in this subdirectory.
+;
+; For more information on the LLVMBuild system, please see:
+;
+;   http://llvm.org/docs/LLVMBuild.html
+;
+;===------------------------------------------------------------------------===;
+
+[component_0]
+type = Library
+name = XRay
+parent = Libraries
+required_libraries = Support Object
+installed = 1