diff -ur kde-odf-thumbnail-1.0.0.old/CMakeLists.txt kde-odf-thumbnail-1.0.0/CMakeLists.txt
--- kde-odf-thumbnail-1.0.0.old/CMakeLists.txt	2010-01-20 15:41:31.000000000 +0100
+++ kde-odf-thumbnail-1.0.0/CMakeLists.txt	2016-03-05 23:49:12.947874730 +0100
@@ -1,8 +1,18 @@
 project(OpenDocumentThumbnail)
 
-find_package(KDE4 REQUIRED)
-include (KDE4Defaults)
+cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
+set(QT_MIN_VERSION "5.2.0")
 
-include_directories( ${KDE4_INCLUDES} ${QT_INCLUDES} )
+find_package(ECM 1.0.0 REQUIRED NO_MODULE)
+set(CMAKE_MODULE_PATH ${ECM_MODULE_PATH} ${ECM_KDE_MODULE_DIR})
+
+include(KDEInstallDirs)
+include(KDECMakeSettings)
+include(KDECompilerSettings)
+
+find_package(Qt5 ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS Gui)
+find_package(KF5 REQUIRED COMPONENTS KIO Archive)
+
+add_definitions(${QT_DEFINITIONS} -DQT_USE_FAST_CONCATENATION -DQT_USE_FAST_OPERATOR_PLUS)
 
 add_subdirectory( src )
diff -ur kde-odf-thumbnail-1.0.0.old/src/CMakeLists.txt kde-odf-thumbnail-1.0.0/src/CMakeLists.txt
--- kde-odf-thumbnail-1.0.0.old/src/CMakeLists.txt	2010-01-20 15:44:25.000000000 +0100
+++ kde-odf-thumbnail-1.0.0/src/CMakeLists.txt	2016-03-05 23:48:14.807877671 +0100
@@ -1,11 +1,11 @@
 
 set(OpenDocumentThumbnail_SRCS opendocumentcreator.cpp)
 
-qt4_add_resources(OpenDocumentThumbnail_SRCS opendocumentthumbnail.qrc)
+qt5_add_resources(OpenDocumentThumbnail_SRCS opendocumentthumbnail.qrc)
 
-kde4_add_plugin(opendocumentthumbnail ${OpenDocumentThumbnail_SRCS})
+add_library(opendocumentthumbnail MODULE ${OpenDocumentThumbnail_SRCS})
 
-target_link_libraries(opendocumentthumbnail ${KDE4_KIO_LIBS} )
+target_link_libraries(opendocumentthumbnail Qt5::Gui KF5::KIOWidgets KF5::Archive)
 
 install(TARGETS opendocumentthumbnail DESTINATION ${PLUGIN_INSTALL_DIR} )
 
diff -ur kde-odf-thumbnail-1.0.0.old/src/opendocumentcreator.cpp kde-odf-thumbnail-1.0.0/src/opendocumentcreator.cpp
--- kde-odf-thumbnail-1.0.0.old/src/opendocumentcreator.cpp	2010-01-22 21:39:46.000000000 +0100
+++ kde-odf-thumbnail-1.0.0/src/opendocumentcreator.cpp	2016-03-05 23:42:31.955638510 +0100
@@ -28,7 +29,7 @@
 
 extern "C"
 {
-    KDE_EXPORT ThumbCreator *new_creator()
+    Q_DECL_EXPORT ThumbCreator *new_creator()
     {
         return new ODFCreator;
     }