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RE: File timing bug

From: Martin Dorey
Subject: RE: File timing bug
Date: Tue, 10 Jun 2008 12:29:04 -0700

(I know from experience that you have to tell make about when you update
targets that make knows about but I can't quote from the manual to
support that de jure.  (And I believe that the only way you can safely
update multiple targets from a single rule is if it's a Pattern Rule but
not a Static Pattern Rule.)  I was rather hoping I'd provoke a more
authoritative response from one of the real gurus but perhaps the
warnocking should be taken as agreement.)

-----Original Message-----
From: Herbert Euler [mailto:address@hidden 
Sent: Monday, June 09, 2008 23:41
To: Martin Dorey; address@hidden
Subject: RE: File timing bug

> This example is certainly simple, thanks.
> The Makefile isn't telling make that the rule for making c from d will
> also update b.  Make caches modification times and doesn't know to
> invalidate its cache of b's time.

Thank you for the information.  So I think it is Makefile.in from GNU
Automake that need modified for the expected behavior.  I'll write to
Automake's mailing list.

Guanpeng Xu
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