diff --git a/CMakeLists.txt b/CMakeLists.txt
index c10e6aa3..23a1d92c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -44,6 +44,7 @@ tde_setup_paths( )
 ##### optional stuff ############################
 
 option( WITH_DBSEARCHENGINE "Enable dbsearchengine support (kbabel)" OFF )
+option( WITH_KCAL "Enable kcal support (kbugbuster)" OFF )
 
 
 ##### user requested modules ####################
@@ -53,6 +54,7 @@ option( BUILD_CERVISIA "Build cervisia" ${BUILD_ALL} )
 option( BUILD_DOC "Build documentation" ${BUILD_ALL} )
 option( BUILD_KAPPTEMPLATE "Build kapptemplate" ${BUILD_ALL} )
 option( BUILD_KBABEL "Build kbabel" ${BUILD_ALL} )
+option( BUILD_KBUGBUSTER "Build kbugbuster" ${BUILD_ALL} )
 
 
 ##### configure checks ##########################
@@ -80,6 +82,7 @@ tde_conditional_add_subdirectory( BUILD_CERVISIA cervisia )
 tde_conditional_add_subdirectory( BUILD_DOC doc )
 tde_conditional_add_subdirectory( BUILD_KAPPTEMPLATE kapptemplate )
 tde_conditional_add_subdirectory( BUILD_KBABEL kbabel )
+tde_conditional_add_subdirectory( BUILD_KBUGBUSTER kbugbuster )
 
 
 ##### write configure files #####################
diff --git a/config.h.cmake b/config.h.cmake
index e69de29b..139f3c77 100644
--- a/config.h.cmake
+++ b/config.h.cmake
@@ -0,0 +1 @@
+#cmakedefine VERSION "@version@"