make is not compiling my files

[Parag N]

hello,
       I  am modifying one GNU Source package of sane application. What i
did is that i got source from SRPM and install it and added some files to
backend directory of sane package then i did aclocal,autocof,automake and
then when i make package make is not compiling my files. also i dont have
Makefile.am only have Makefile.in and by ./configure i am able to get
Makefile. what can i do so that makefile will compile my files also. I also
manually added files to be compiled in Makefile but it didnot work.
Regards,
Parag.