[phobos] MODEL inference

[Timothee Cour]

coincidence, just sent out an email regarding this just today:
http://forum.dlang.org/post/mailman.390.1369900211.13711.digitalmars-d@puremagic.com
"D based build system to replace current makefile"

Yes, no point in making the makefile more complicated, doing it in D is
much easier/cleaner.

On Wed, May 29, 2013 at 9:04 PM, Jonathan M Davis <jmdavisProg at gmx.com>wrote:

> On Wednesday, May 29, 2013 23:30:12 Andrei Alexandrescu wrote:
> > I'm seeing this is phobos/posix.mak:
> >
> > MODEL:=default
> > ifneq (default,$(MODEL))
> >        MODEL_FLAG:=-m$(MODEL)
> > endif
> >
> > I find it unpleasant that we have directories
> > generated/xxx/yyy/{32,64,default} of which default is identical to
> another.
> >
> > Is there a simple and robust technique to detect the default model on a
> > given platform?
>
> My first thought would be to compile a program and see what size size_t
> was,
> but I don't know feasible that is from inside of make. There's probably
> some
> way to get make to tell you, but I'm not very well versed in make.
>
> Timothee Cour has expressed interest in replacing all of the makefiles
> with D
> programs that do the build wth the idea that it would be easier to manage
> the
> various architectures and OSes that way. And if we did that, then all you'd
> have to do would be to check the size of size_t within the build script
> with
> size_t.sizeof.
>
> - Jonathan M Davis
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