llvm-build: Add support for non-installed libraries (e.g., gtest).
 - These libraries are only reported by llvm-config when run from a development
   tree.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156838 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/LLVMBuild.html b/docs/LLVMBuild.html
index 43726a1..9e7f8c7 100644
--- a/docs/LLVMBuild.html
+++ b/docs/LLVMBuild.html
@@ -272,6 +272,11 @@
           components. For example, the <i>X86</i> target might define a library
           group for all of the <i>X86</i> components. That library group might
           then be included in the <i>all-targets</i> library group.</p></li>
+
+        <li><i>installed</i> <b>[optional]</b> <b>[boolean]</b>
+          <p>Whether this library is installed. Libraries that are not installed
+          are only reported by <tt>llvm-config</tt> when it is run as part of a
+          development directory.</p></li>
       </ul>
     </li>