do a makefile

do I need to alter the file "makefile" of FreeRTOS, can anybody happen some site that has information on how to do a file makefile? I need to understand how can i doing the scritpt.

do a makefile

Not really sure what you are asking.  If you want to build one of the demo applications then you do not need to modify the makefile.  To create your own application then you will have to modify the list of files built by the makefile. Look here for the make manual in various guises: http://www.gnu.org/software/make/manual/make.html