[Doxygen-users] How to keep directory struct at external document

[伏田勇也 <no...@gm...>]

Hello.

I want to build documentation by each directory in source tree.
and I integrate top source .

example:
./src/main.cpp
./src/SubA/suba.cpp
./src/SubA/suba.hpp
./src/SubB/subb.cpp
./src/SubB/subb.cpp

DoxyConfFile is :
main.doxy:
     INPUT ./src/main.cpp
     TAGFILES  suba.tag subb.tag

suba.doxy
     INPUT ./src/SubA
    GENERATE_TAGFILE suba.tag

subb.doxy
    INPUT ./src/SubB
    GENERATE_TAGFILE subb.tag

But ," File List" in html document  is broken directory struct in 
sub-directory.

FileList of main.doxy :
src/main.cpp
suba.cpp [external]
suba.hpp[external]
subb.cpp[external]
subb.cpp[external]

I want to following.

src/main.cpp
src/SubA/suba.cpp[external]
src/SubA/suba.hpp[external]
src/SubB/subb.cpp[external]
src/SubB/subb.cpp[external]

So,Please tell me the notes of DoxyConfFile setting.
Doxygen Viersion is 1.8.18.

Regards.