From f4e80ea688cd1b35b35d8247f819b047517f4cdc Mon Sep 17 00:00:00 2001
From: Alexandru Croitor <alexandru.croitor@qt.io>
Date: Thu, 5 Dec 2019 15:47:24 +0100
Subject: [PATCH] Clear QT_KNOWN_MODULE_${module}_TOOLS cache vars on
 reconfiguration

Otherwise if you configured a commit that has tool A, and the switch
to a commit where tool A does not exist anymore, reconfiguration
will fail.

Change-Id: Ibb244b9630a6f4fecd27d51ce28eceff07ba8666
Reviewed-by: Leander Beernaert <leander.beernaert@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
---
 cmake/QtBuild.cmake | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cmake/QtBuild.cmake b/cmake/QtBuild.cmake
index cf4e56ca19c..fa71968ae18 100644
--- a/cmake/QtBuild.cmake
+++ b/cmake/QtBuild.cmake
@@ -212,6 +212,8 @@ macro(qt_internal_append_known_modules_with_tools module)
     if(NOT ${module} IN_LIST QT_KNOWN_MODULES_WITH_TOOLS)
         set(QT_KNOWN_MODULES_WITH_TOOLS "${QT_KNOWN_MODULES_WITH_TOOLS};${module}"
             CACHE INTERNAL "Known Qt modules with tools" FORCE)
+        set(QT_KNOWN_MODULE_${module}_TOOLS ""
+            CACHE INTERNAL "Known Qt module ${module} tools" FORCE)
     endif()
 endmacro()