From 4fbf7ee27ac52c57ee0f26bd3eba44ca867264b5 Mon Sep 17 00:00:00 2001
From: Ryan Curtin <ryan@ratml.org>
Date: Tue, 24 Jan 2012 04:48:45 +0000
Subject: [PATCH] Don't install Doxygen documentation if it was never built.

---
 CMakeLists.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6a683d84da..dae1737971 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -131,5 +131,6 @@ if (DOXYGEN_FOUND)
   install(DIRECTORY ${CMAKE_BINARY_DIR}/doc/html
     DESTINATION share/doc/mlpack
     COMPONENT doc
+    OPTIONAL
   )
 endif (DOXYGEN_FOUND)