Use 'copy' but not 'copy_if_different' on Windows platforms

Use custom script to copy big Android artifacts on Windows platforms.
The script uses 'copy' but not 'copy_if_different' when source file
size is bigger than 2GB. 'cmake -E copy_if_different' only compares
first 2GB of files because of cmake issue, so this step only
workaround the problem.

Pick-to: 6.2 6.3
Task-number: QTBUG-99491
Change-Id: Id076734700e334dfc3330da412462c2b53829b33
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

4 files changed, 38 insertions, 0 deletions

diff --git a/cmake/QtBaseGlobalTargets.cmake b/cmake/QtBaseGlobalTargets.cmake
index cae5ec8bf6..e9d9370510 100644
--- a/cmake/QtBaseGlobalTargets.cmake
+++ b/cmake/QtBaseGlobalTargets.cmake
@@ -218,6 +218,7 @@ qt_copy_or_install(FILES
                    cmake/QtCompilerFlags.cmake
                    cmake/QtCompilerOptimization.cmake
                    cmake/QtConfigDependencies.cmake.in
+                   cmake/QtCopyFileIfDifferent.cmake
                    cmake/QtDeferredDependenciesHelpers.cmake
                    cmake/QtDbusHelpers.cmake
                    cmake/QtDocsHelpers.cmake
@@ -299,6 +300,7 @@ qt_copy_or_install(DIRECTORY
 set(__public_cmake_helpers
     cmake/QtFeature.cmake
     cmake/QtFeatureCommon.cmake
+    cmake/QtPublicCMakeHelpers.cmake
     cmake/QtPublicCMakeVersionHelpers.cmake
     cmake/QtPublicFinalizerHelpers.cmake
     cmake/QtPublicPluginHelpers.cmake
diff --git a/cmake/QtConfig.cmake.in b/cmake/QtConfig.cmake.in
index dd39ff648e..822224d2db 100644
--- a/cmake/QtConfig.cmake.in
+++ b/cmake/QtConfig.cmake.in
@@ -92,6 +92,7 @@ include("${CMAKE_CURRENT_LIST_DIR}/QtPublicWalkLibsHelpers.cmake")
 include("${CMAKE_CURRENT_LIST_DIR}/QtPublicFindPackageHelpers.cmake")
 include("${CMAKE_CURRENT_LIST_DIR}/QtPublicDependencyHelpers.cmake")
 include("${CMAKE_CURRENT_LIST_DIR}/QtPublicToolHelpers.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/QtPublicCMakeHelpers.cmake")
 
 if(NOT DEFINED QT_CMAKE_EXPORT_NAMESPACE)
     set(QT_CMAKE_EXPORT_NAMESPACE @QT_CMAKE_EXPORT_NAMESPACE@)
diff --git a/cmake/QtCopyFileIfDifferent.cmake b/cmake/QtCopyFileIfDifferent.cmake
new file mode 100644
index 0000000000..4c64895b53
--- /dev/null
+++ b/cmake/QtCopyFileIfDifferent.cmake
@@ -0,0 +1,15 @@
+# copy_if_different works incorrect in Windows if file size if bigger than 2GB.
+# See https://gitlab.kitware.com/cmake/cmake/-/issues/23052 and QTBUG-99491 for details.
+
+cmake_minimum_required(VERSION 3.16)
+
+set(copy_strategy "copy_if_different")
+if(CMAKE_HOST_WIN32)
+    file(SIZE "${SRC_FILE_PATH}" size)
+    # If file size is bigger than 2GB copy it unconditionally
+    if(size GREATER_EQUAL 2147483648)
+        set(copy_strategy "copy")
+    endif()
+endif()
+
+execute_process(COMMAND ${CMAKE_COMMAND} -E ${copy_strategy} "${SRC_FILE_PATH}" "${DST_FILE_PATH}")
diff --git a/cmake/QtPublicCMakeHelpers.cmake b/cmake/QtPublicCMakeHelpers.cmake
new file mode 100644
index 0000000000..86b8edacd4
--- /dev/null
+++ b/cmake/QtPublicCMakeHelpers.cmake
@@ -0,0 +1,20 @@
+# copy_if_different works incorrect in Windows if file size if bigger than 2GB.
+# See https://gitlab.kitware.com/cmake/cmake/-/issues/23052 and QTBUG-99491 for details.
+function(_qt_internal_copy_file_if_different_command out_var src_file dst_file)
+    # The CMake version higher than 3.23 doesn't contain the issue
+    if(CMAKE_HOST_WIN32 AND CMAKE_VERSION VERSION_LESS 3.23)
+        set(${out_var} "${CMAKE_COMMAND}"
+            "-DSRC_FILE_PATH=${src_file}"
+            "-DDST_FILE_PATH=${dst_file}"
+            -P "${_qt_6_config_cmake_dir}/QtCopyFileIfDifferent.cmake"
+            PARENT_SCOPE
+        )
+    else()
+        set(${out_var} "${CMAKE_COMMAND}"
+            -E copy_if_different
+            "${src_file}"
+            "${dst_file}"
+            PARENT_SCOPE
+        )
+    endif()
+endfunction()