From 8fc59e552fc8b40f24e776a4855d99e23fa419ce Mon Sep 17 00:00:00 2001
From: Joerg Bornemann <joerg.bornemann@qt.io>
Date: Thu, 29 Oct 2020 20:31:37 +0100
Subject: [PATCH] CMake: Yield fatal error on malformed INSTALL_MKSPECS

The value of this variable must be exactly "mkspecs" or end with
"/mkspecs".

Change-Id: I39f83e9660794dfe23f5fd39fb1084b87ba1f140
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
---
 cmake/QtBuild.cmake | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cmake/QtBuild.cmake b/cmake/QtBuild.cmake
index 209a0bf9c2..052f5ea3de 100644
--- a/cmake/QtBuild.cmake
+++ b/cmake/QtBuild.cmake
@@ -49,6 +49,10 @@ qt_configure_process_path(INSTALL_PLUGINSDIR
                           "${INSTALL_ARCHDATADIR}/plugins"
                           "Plugins [ARCHDATADIR/plugins]")
 
+if(NOT INSTALL_MKSPECSDIR MATCHES "(^|/)mkspecs")
+    message(FATAL_ERROR "INSTALL_MKSPECSDIR must end with '/mkspecs'")
+endif()
+
 # Given CMAKE_CONFIG and ALL_CMAKE_CONFIGS, determines if a directory suffix needs to be appended
 # to each destination, and sets the computed install target destination arguments in OUT_VAR.
 # Defaults used for each of the destination types, and can be configured per destination type.