thanks jens.
I just tested other project.
it seems the bug is only related to the quex library.( the project using quex library has this kind of problem, but others were not)
I have quex library 0.55.3 before. today, the new quex library 0.55.4 has released, so I just update to this version. So, the header files of quex library was updated.
Now, all the project using quex library meets this kind of problem. Even I totally delete the obj and bin folder, the problem still happens again and again.
Seems it is related to the new quex header files. but not sure how to solve this problem.