In file included from hoge.cpp:4:
hoge.h: In constructor `hoge<base_addr>::hoge(sc_module_name)':
hoge.h:211: error: request for member `simcontext' is ambiguous in multiple 
   inheritance lattice

Google did not return any results for this message, shall I dig into OSCI Forum ?

24.8 Multiple Inheritance and virtual Base Classes Is this related ?

This is simpley due to too many sc_modude inheritance. Removing extra sc_module seems to fix the problem ( I am getting another errors now).