temp preprocessed filename

[Michael Morrell]

I'm tracking down some differences in the object files from ostensibly the same compilation flags of the same input.  I've got two .o files that should be the same, but when I run:

  readelf -wl <object file> | grep ii

to see the debug.line info, I see a difference.  The filename that is shown
is of the form <basename>.tmp,<hostname>.<number>.ii

and <number> is different.  I've looked through the source and can't find
where that filename is generated.  I want to know why <number> would change
and how to prevent it from doing so.

Can anyone point me in the right direction?

Thanks,

  Michael