From 1273ffb0002b14d952807c250dbcc6228f60ff26 Mon Sep 17 00:00:00 2001
From: Alexandru Croitor <alexandru.croitor@qt.io>
Date: Tue, 14 Dec 2021 16:56:39 +0100
Subject: [PATCH] CMake: Copy FindFoo.cmake scripts to build dir in prefix
 builds
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They are used by build dir Qt6FooConfig.cmake files in conjunction
with export(EXPORT)'ed target files when building ExternalProjects
against a non-installed Qt (or in a top-level build).

Change-Id: I688caf1bd1b8a8fe7e549cebade2aef6f928bd6c
Pick-to: 6.2 6.3
Task-number: QTBUG-90820
Task-number: QTBUG-96232
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
---
 cmake/QtBaseGlobalTargets.cmake | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/cmake/QtBaseGlobalTargets.cmake b/cmake/QtBaseGlobalTargets.cmake
index a7484a34353..cae5ec8bf64 100644
--- a/cmake/QtBaseGlobalTargets.cmake
+++ b/cmake/QtBaseGlobalTargets.cmake
@@ -341,6 +341,17 @@ qt_copy_or_install(DIRECTORY cmake/
     PATTERN "3rdparty" EXCLUDE
 )
 
+# In prefix builds we also need to copy the files into the build config directory, so that the
+# build-dir Qt6Config.cmake finds the files when building examples as ExternalProjects.
+if(QT_WILL_INSTALL)
+    file(COPY cmake/
+        DESTINATION "${__GlobalConfig_build_dir}"
+        FILES_MATCHING PATTERN "Find*.cmake"
+        PATTERN "tests" EXCLUDE
+        PATTERN "3rdparty" EXCLUDE
+    )
+endif()
+
 if(MACOS)
     qt_copy_or_install(FILES
         cmake/macos/MacOSXBundleInfo.plist.in