problems about CVS building

  • i add a new .ttf file(named md_khmurabi_10.ttf :grinning_face_with_smiling_eyes: yes i want to replace the former file. ) to the source file of CVS,then "make rebuild-flash","make flash-compress".I get a file complete.img (5.7M).
    now i add the former file md_khmurabi_10.ttf to the CVS to replace the new file I added.
    then rebuild ,flash-compress.i get a file complete.img(still 5.7M).
    it seems i can't replace the new file with the former file.
    Of course,i have make some changes with those files .cpp ,makefiles.
    if the size of the file isn't changed,it seems those place i had made changes in the source file s won't work.
    i don't know why.
    anyone can tell me the method?