From fde8dfa417e1862e6ca7f6b1e9cb5c4ed9f86b9c Mon Sep 17 00:00:00 2001
From: Nils Gladitz <nilsgladitz@gmail.com>
Date: Tue, 4 Apr 2017 21:15:33 +0200
Subject: [PATCH] CPackWIX: Add documentation for CPACK_WIX_ROOT

Fixes: #16774
---
 Modules/CPackWIX.cmake | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Modules/CPackWIX.cmake b/Modules/CPackWIX.cmake
index ed0223ba1b..1dc37d415f 100644
--- a/Modules/CPackWIX.cmake
+++ b/Modules/CPackWIX.cmake
@@ -279,6 +279,14 @@
 #  When unset generated installers will default installing to
 #  ``ProgramFiles<64>Folder``.
 #
+# .. variable:: CPACK_WIX_ROOT
+#
+#  This variable can optionally be set to the root directory
+#  of a custom WiX Toolset installation.
+#
+#  When unspecified CPack will try to locate a WiX Toolset
+#  installation via the ``WIX`` environment variable instead.
+#
 
 if(NOT CPACK_WIX_ROOT)
   file(TO_CMAKE_PATH "$ENV{WIX}" CPACK_WIX_ROOT)