--- kplotting-5.98.0.orig/CMakeLists.txt
+++ kplotting-5.98.0/CMakeLists.txt
@@ -30,7 +30,12 @@
 option(BUILD_QCH "Build API documentation in QCH format (for e.g. Qt Assistant, Qt Creator & KDevelop)" OFF)
 add_feature_info(QCH ${BUILD_QCH} "API documentation in QCH format (for e.g. Qt Assistant, Qt Creator & KDevelop)")
 
-cmake_dependent_option(BUILD_DESIGNERPLUGIN "Build plugin for Qt Designer" ON "NOT CMAKE_CROSSCOMPILING" OFF)
+if (CMAKE_CROSSCOMPILING)
+    set(BUILD_DESIGNERPLUGIN_DEFAULT OFF)
+else()
+    set(BUILD_DESIGNERPLUGIN_DEFAULT ON)
+endif()
+option(BUILD_DESIGNERPLUGIN "Build plugin for Qt Designer" ${BUILD_DESIGNERPLUGIN_DEFAULT})
 add_feature_info(DESIGNERPLUGIN ${BUILD_DESIGNERPLUGIN} "Build plugin for Qt Designer")
 
 ecm_setup_version(PROJECT VARIABLE_PREFIX KPLOTTING