Re: calling autoreconf and minimizing rebuilds

[Eric Blake]

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According to Ralf Wildenhues on 12/4/2006 11:11 PM:
> Quoting automake/configure.ac:
> # The amount we should wait after modifying files depends on the platform.
> # On Windows '95, '98 and ME, files modifications have 2-seconds
> # granularity and can be up to 3 seconds in the future w.r.t. the
> # system clock.

For what it's worth, Microsoft no longer supports Windows 9x, so cygwin no
longer actively caters to support these old systems.  The eventual cygwin
1.7.0 has only been tested to work on Windows NT class systems.  But the
thread Ralf dug up shows that even NT systems have odd clock issues with
regards to FAT filesystems.

On the other hand, the 2-second granularity is a "feature" of the FAT
filesystem, which is run on more than just Windows (unfortunately, FAT
tends to be the filesystem of choice in USB Flash drives).  Even Linux
supports FAT, although I doubt anyone is foolhardy enough to develop on
FAT when there are so many better filesystems to choose from.  But you
need at least 'sleep 2' to guarantee distinct timestamps on FAT.

- --
Life is short - so eat dessert first!

Eric Blake             address@hidden
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