I apologize if this is answered somewhere already however I could not find it.

My project uses a large number of generated C++ files (.h/.cpp files).  On a 
clean build these files are cleaned up as well.  As a result during the next 
build since they are generated again they will all have a newer mtime and ctime 
than the previous runs.  Their content is the same though.  Is there a way for 
those files to disable checking both the mtime and ctime checks?  I would love 
to be able to check based on some sort of "check file size then check content 
checksum" ignoring mtime and ctime.

If it helps all of those files are generated to a different directory than the 
static source files (cmake source vs binary dirs.).



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