For official releases, the version is known. It does not need nor can
be generated because it depends on the git repository which is not
included in the pristine tarball.
Index: toulbar2/CMakeLists.txt
===================================================================
--- toulbar2.orig/CMakeLists.txt
+++ toulbar2/CMakeLists.txt
@@ -297,8 +297,6 @@ INCLUDE_DIRECTORIES ( ${CMAKE_CURRENT_SO
 
 IF(TOULBAR2)
   add_executable(toulbar2${EXE} ${source_files})
-  ADD_CUSTOM_TARGET(gen_version ALL /bin/sh ${CMAKE_CURRENT_SOURCE_DIR}/cmake-script/genVersionFile.sh)
-  SET_SOURCE_FILES_PROPERTIES(ToulbarVersion.hpp PROPERTIES GENERATED 1)
   TARGET_LINK_LIBRARIES(toulbar2${EXE} ${all_depends})
   INSTALL( TARGETS toulbar2${EXE} DESTINATION bin )
 ENDIF(TOULBAR2)
