From 7b4d83c444b0e7fee241ed293614efca17c67201 Mon Sep 17 00:00:00 2001
From: Robert Schumacher <roschuma@microsoft.com>
Date: Tue, 6 Jun 2017 11:39:00 -0700
Subject: [qt5] Add check for long path.

---
 ports/qt5/portfile.cmake | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/ports/qt5/portfile.cmake b/ports/qt5/portfile.cmake
index ee871b155..0424ba2e5 100644
--- a/ports/qt5/portfile.cmake
+++ b/ports/qt5/portfile.cmake
@@ -1,6 +1,12 @@
-include(${CMAKE_TRIPLET_FILE})
 include(vcpkg_common_functions)
 
+string(LENGTH "${CURRENT_BUILDTREES_DIR}" BUILDTREES_PATH_LENGTH)
+if(BUILDTREES_PATH_LENGTH GREATER 27)
+    message(WARNING "Qt5's buildsystem uses very long paths and may fail on your system.\n"
+        "We recommend moving vcpkg to a short path such as 'C:\\src\\vcpkg' or using the subst command."
+    )
+endif()
+
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR})
 include(configure_qt)
 include(install_qt)
-- 
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