On Wed, Oct 5, 2011 at 6:45 PM, Mark Galeck (CW) <[email protected]> wrote:
> How can this be??? Even if the resolution was low enough that the two files
> have the _same_ timestamp, according to the manual, should not update the
> target (only update the target if prerequisites "newer"). Certainly there is
> no way the prerequisites can be "newer".
>
> Can somebody clue me in?
I cannot reproduce this on Ubuntu 11.04. Using the following makefile:
% cat Makefile
tgt: prq1 prq2
touch $^
touch $@
The right thing happens reliably. Note that you can use the "stat"
program to see mtimes down to the microsecond. When I do this all 3
files have the same [acm]time, and as noted make does the right thing.
Ubuntu 11 still uses make 3.81.
-David Boyce
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