From 6eb609fd59d989fede93fadfc67b928ee7ab7fc2 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 27 Mar 2017 11:42:48 -0400
Subject: InstallRequiredSystemLibraries: Find VS 2017 redist directory

Use our undocumented `cmake_host_system_information` query to find the
VS 2017 installation directory by asking the VS installer tool.  Then
look relative to that for the redist directory.

Fixes: #16737
---
 Modules/InstallRequiredSystemLibraries.cmake | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Modules/InstallRequiredSystemLibraries.cmake b/Modules/InstallRequiredSystemLibraries.cmake
index 9750a06..a3478a3 100644
--- a/Modules/InstallRequiredSystemLibraries.cmake
+++ b/Modules/InstallRequiredSystemLibraries.cmake
@@ -196,6 +196,11 @@ if(MSVC)
     endif()
     if(NOT vs VERSION_LESS 15)
       set(_vs_redist_paths "")
+      cmake_host_system_information(RESULT _vs_dir QUERY VS_${vs}_DIR) # undocumented query
+      if(IS_DIRECTORY "${_vs_dir}")
+        file(GLOB _vs_redist_paths "${_vs_dir}/VC/Redist/MSVC/*")
+      endif()
+      unset(_vs_dir)
     else()
       get_filename_component(_vs_dir
         "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\${vs}.0;InstallDir]" ABSOLUTE)
-- 
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