[CMake] Where do add_dependencies() that are not defines go?

[Marcel Loose]

Hi Luke,

A little digging revealed that you should use the property DEFINITIONS
instead of COMPILE_DEFINITIONS, despite the fact that the manual says
that DEFINITIONS is there for backward compatibility only. I noticed
that that's the only property that contains your compile flag. Maybe
someone from Kitware can comment on this?

Best regards,
Marcel Loose.

On Wed, 2010-04-28 at 12:58 -0400, Luke Dalessandro wrote:
> On Wed, Apr 28, 2010 at 12:04 PM, Marcel Loose <loose at astron.nl>
wrote:
> > Hi Luke,
> >
> > Remember that the definitions you do with add_definitions() are
scoped;
> > i.e. you can only see them in the directory where you defined them
and
> > its sub-directories, but not its parent directories.
> >
> > You should definitely do add_definitions("-m64") in your top-level
> > directory.
> 
> I understand the scoping issue. The problem is that I don't know what
> variable the non -D values are being placed in, so that I can recover
> them in a custom build. They're not in any of the CMAKE_<LANG>_FLAGS,
> nor are they in a file's COMPILE_FLAGS property. The -D values are
> attached to the directory's COMPILE_DEFINITIONS, but the directory
> doesn't have COMPILE_FLAGS.
> 
> They're not lost, because (say) -m64 does appear on the build line as
> needed, I just don't know what variable they're being stored in.
> 
> Luke
> 
> >
> > Best regards,
> > Marcel Loose.
> >
> > On Wed, 2010-04-28 at 11:44 -0400, Luke Dalessandro wrote:
> >> I meant add_definitions not dependencies. Sorry.
> >>
> >> Luke
> >>
> >> On Wed, Apr 28, 2010 at 11:39 AM, Luke Dalessandro
> >> <ldalessandro at gmail.com> wrote:
> >> > We sometimes use add_dependencies to add compile flags that
aren't
> >> > defines, e.g., -m64. I am trying to build an add_custom_command
that
> >> > needs access to these flags, but I can't seem to find them
anywhere
> > (I
> >> > can get the dependencies from the directory properties).
> >> >
> >> > Does anyone know where these other flag types are stored?
> >> >
> >> > Thanks,
> >> > Luke
> >> >
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