Fix cross build again.

Thanks Helmut for the patch!

debian/changelog

@@ -1,3 +1,12 @@
+qt6-base (6.4.2+dfsg-18) UNRELEASED; urgency=medium
+
+  [ Helmut Grohne ]
+  * Fix FTCBFS: Do build sqlbrowser. (Closes: #1042709)
+  * Move from deprecated QT_BUILD_TOOLS_WHEN_CROSSCOMPILING to
+    QT_FORCE_BUILD_TOOLS.
+
+ -- Debian Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>  Tue, 01 Aug 2023 19:47:16 -0300
+
 qt6-base (6.4.2+dfsg-17) unstable; urgency=medium
 
   * Team upload.

debian/patches/cross.patch

@@ -21,7 +21,17 @@
      LABEL "Android deployment tool"
      PURPOSE "The Android deployment tool automates the process of creating Android packages."
 -    CONDITION NOT CMAKE_CROSSCOMPILING AND QT_FEATURE_regularexpression)
-+    CONDITION QT_FEATURE_regularexpression)
++    CONDITION (QT_FORCE_BUILD_TOOLS OR NOT CMAKE_CROSSCOMPILING) AND QT_FEATURE_regularexpression)
  
  qt_feature("macdeployqt" PRIVATE
      SECTION "Deployment"
+--- a/examples/sql/CMakeLists.txt
++++ b/examples/sql/CMakeLists.txt
+@@ -12,6 +12,6 @@ if(TARGET Qt::Xml)
+     qt_internal_add_example(masterdetail)
+ endif()
+ 
+-if(NOT CMAKE_CROSSCOMPILING)
++if(QT_FORCE_BUILD_TOOLS OR NOT CMAKE_CROSSCOMPILING)
+     qt_internal_add_example(sqlbrowser)
+ endif()

debian/rules

@@ -24,7 +24,7 @@ ifneq ($(DEB_BUILD_ARCH),$(DEB_HOST_ARCH))
 	extra_cmake_args += \
 		-DQT_HOST_PATH=/usr \
 		-DQT_HOST_PATH_CMAKE_DIR=/usr/lib/${DEB_BUILD_MULTIARCH}/cmake \
-		-DQT_BUILD_TOOLS_WHEN_CROSSCOMPILING=ON
+		-DQT_FORCE_BUILD_TOOLS=ON
 endif
 
 %: