[CMake] "Cannot restore timestamp" error on Windows

[J Decker]

do you have antivirus software that you can disable?


On Tue, Apr 23, 2013 at 2:43 PM, Paul Smith <paul at mad-scientist.net> wrote:

> On Sun, 2013-04-21 at 00:32 -0400, Paul Smith wrote:
> > Hi all; I'm getting this error most, but not every, time I run cmake on
> > my main Windows build system:
> >
> > 28>CUSTOMBUILD : CMake error : Cannot restore timestamp
> D:\build-dir\MASTER-BRANCHES30-WINDOWS\BaseTest\CMakeFiles\generate.stamp
> >
> > It happens for different targets as well, not always the same one.
>
> > commit 2dc17f88dd2de900154f153f521b803ec9b7c377
> > Author: Brad King <brad.king at kitware.com>
> > Date:   2013-02-12 10:46:22 -0500
>
> We're still seeing this, pretty often.  This is a very serious problem
> for us as it's causing spurious build failures.
>
> I've looked into the code and added debugging.  For example if the
> RenameFile() fails, I've printed the system error.  The error always
> appears to be "No such file or directory".
>
> I've also added a check on the open of the temp file so that if it
> fails, I print the reason: previously there was no check for that.
> However, that code never executes so it seems that's not the problem.
>
> Currently my suspicion is that the name of the temp file is not unique
> enough: somehow multiple concurrent runs of this function are using the
> same temp file name.  I've added output to print the temp file name
> always, not just when a failure happens, but it will take a bit of time
> to get into our build system.
>
> Anyone have any other ideas?
>
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