[CMake] set_property on sources causing extra files to be rebuilt

[Daniel Nelson]

On Tuesday 24 March 2009 4:46:29 pm Clinton Stimpson wrote:
> Daniel Nelson wrote:
> > On Tuesday 24 March 2009 3:16:27 pm Alexander Neundorf wrote:
> >> On Tuesday 24 March 2009, Alexander Neundorf wrote:
> >>> On Friday 20 March 2009, Daniel Nelson wrote:
> >>>> It looks like the projects flags.make is updated every time any
> >>>> compile flag or definition changes, and every object file in the
> >>>> project depends on flags.make. In the case of properties set using
> >>>> set_property() the only part of the flags.make that changes is the
> >>>> comment, so maybe it would be best to put these comments into a
> >>>> different file that is not a dependency?
> >>>
> >>> Do you have the same effect when you use SET_SOURCE_FILES_PROPERTIES()
> >>> instead ?
> >>
> >> I checked, it has the same behaviour, also with cmake cvs.
> >> It is actually on purpose that the comments change, since this enforces
> >> the rebuilding of the object files if only the flags are changed.
> >> (if flags.make is generated without these comments, object files are not
> >> rebuilt when the flags are changed).
> >> Maybe it could be made more fine granular.
> >>
> >> Alex
> >
> > So it sounds like the only way to fix this would be to write a separate
> > flags.make file for every object file that has compile/define flags set? 
> > I opened this as issue 8787 in the bug tracker.
>
> Is your report a duplicate?
> See also: http://public.kitware.com/Bug/view.php?id=8642
>
> Clint
>

Yeah I guess it is a duplicate.
--
Daniel