Ill-defined targets when compiling rootana as a submodule

[Lukas Gerritzen]

When you treat rootana as a submodule, there is a combination of instructions in CMakeLists.txt that prevents compilation.

245 get_directory_property(PARENT_DIRECTORY PARENT_DIRECTORY)
246 if(NOT PARENT_DIRECTORY)
247     add_subdirectory(libAnalyzer)
248     add_subdirectory(libAnalyzerDisplay)
249     add_subdirectory(libMidasInterface)
250     add_subdirectory(libMidasServer)
251     add_subdirectory(old_analyzer)
252 endif()
[...]
260 install(
261     TARGETS event_dump event_skim
262     DESTINATION bin
263 )

The target event_dump is defined in old_analyzer, which is only included if there is no parent directory. Regardless of whether there is a parent directory, CMake wants to install it, so it fails:

CMake Error at packages/rootana/CMakeLists.txt:260 (install):
  install TARGETS given target "event_dump" which does not exist.

An obvious solution would be to move lines 260-263 into the conditional, but I’m actually not sure what the reason behind this conditional is in the first place.