Slavko Kocjancic wrote:
>
> ... but how "make" know that I make change on some file? I suspect 
> that I should tell what file I changed?!?
> ------------------------------------------------------------------------
Make scans the date stamps in the directories.  If the Makefile is 
properly constructed, it knows that some collection of c source and 
include files are needed to create some object files which are needed to 
link together into some executable.  If any of the source files have a 
later date than the executable, then recompilation of the specific 
modules is required.  It takes about 2 minutes on a slow computer to 
scan the entire EMC source tree to find the items needed to compile.  If 
you only changed a real-time part, or only a user-mode part, then you 
can use a shortcut into the makefile to reduce the time the make command 
takes.  With a faster computer, it probably makes little difference.

Jon

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