RE: File timing bug
> (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.) Well, I think I am just unlucky. There are many times, that I follow a (free) software's document but do not get expected result. If I had enough time and knowledge, I would like to track them down and post with patches. But sadly I cannot. Hope some day fortune would come with me. Anyway, I now understand that what I posted is not a bug, since it is not Make's business. Thank you again for the information. Regards, Guanpeng Xu _ Explore the seven wonders of the world http://search.msn.com/results.aspx?q=7+wonders+world&mkt=en-US&form=QBRE ___ Bug-make mailing list Bug-make@gnu.org http://lists.gnu.org/mailman/listinfo/bug-make
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. Regards, Guanpeng Xu _ Invite your mail contacts to join your friends list with Windows Live Spaces. It's easy! http://spaces.live.com/spacesapi.aspx?wx_action=create&wx_url=/friends.aspx&mkt=en-us ___ Bug-make mailing list Bug-make@gnu.org http://lists.gnu.org/mailman/listinfo/bug-make
RE: File timing bug
Hi, Perhaps due to my long and annoying description, one has difficulty in understanding what the problem I encountered was. Here I would provide a much shorter description. GNU Automake generates dependency tree like this in Makefile.in: [EMAIL PROTECTED]:~/tmp/k$ cat Makefile a: b cat b>a b: c c: d date>b cp b c [EMAIL PROTECTED]:~/tmp/k$ Its intention is to regenerate `a' when `d' is updated. But this does not work, since it requires `make' to be executed twice: [EMAIL PROTECTED]:~/tmp/k$ make date>b cp b c [EMAIL PROTECTED]:~/tmp/k$ make cat b>a [EMAIL PROTECTED]:~/tmp/k$ However, I noticed that if the Makefile looks like this: [EMAIL PROTECTED]:~/tmp/k$ cat Makefile a: b cat b>a b: c cp c b c: d date>c [EMAIL PROTECTED]:~/tmp/k$ Everything works as expected: [EMAIL PROTECTED]:~/tmp/k$ touch d [EMAIL PROTECTED]:~/tmp/k$ make date>c cp c b cat b>a [EMAIL PROTECTED]:~/tmp/k$ Is this a bug in GNU make, or a bug in GNU Automake? Regards, Guanpeng Xu _ Discover the new Windows Vista http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE ___ Bug-make mailing list Bug-make@gnu.org http://lists.gnu.org/mailman/listinfo/bug-make
