[bug #37708] File rules compare wrong own timestamps

[Paul D. Smith]

Update of bug #37708 (project make):

                  Status:                    None => Not A Bug              
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #1:

This is not technically a bug... or if it is it's a duplicate of the directory
cache issue.  Your makefile is not being honest with make: as far as your
makefile is concerned, there is no way for the file "depended_real_file" to
ever be updated.  Thus, make does some shortcuts to improve performance.

However, because your makefile really does change the time of
"depended_real_file" behind make's back (as a hidden side-effect of updating
"depended_remake_always"), things don't work well.

I suspect that what you want to do could be more straightforwardly done but
there's not enough detail here to know for sure; if you want help please email
address@hidden rather than using the bug tracker.

If you change your makefile such that you give commands to the
"depended_real_file" target, even if they're empty, then make will re-check
the timestamp because it thinks maybe something changed; then your makefile
will work (always rebuilds main):


depended_real_file: depended_remake_always ; @:


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