http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47494

           Summary: .MOD files: Consider removing the time stamp
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: bur...@gcc.gnu.org


At http://gcc.gnu.org/ml/gcc-patches/2011-01/msg02012.html Simon Baldwin wrote:

Strict build environments do binary comparisons of files across gcc builds.
Writing the current timestamp into a Fortran .mod file leads to false
positives from such environments.  Omitting the timestamp removes these
false positives.

That change was in Google's internal GCC - and is now pushed to the Google
branch in SVN.

One should consider to apply the patch also to the trunk

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