[Scons-users] Provide default Import to SConscript

[Gary Oberbrunner]

In case folks don't know this, here are two ways to get symbols into the
namespace that SConscripts start with:
1. Add them to SCons.Script  (which is automatically imported into all
SConscripts)
2. Put them in site_init/site_scons.py

The site init file logic (in src/engine/SCons/Script/Main.py) prepends
site_scons to sys.path, imports site_init.py into the SCons.Script
namespace, as well as prepending site_scons/site_tools to the default tool
path.

Also note that in any Python file you can do 'import SCons.Script' and use
standard SCons functions like File, Dir, Program, etc.

On Wed, Feb 21, 2018 at 4:47 PM, Jason Kenny <dragon512 at live.com> wrote:

> No problem,
>
> If you have any question.. want updated links to it etc.. just let me
> know. Also as Bill said.. feel free to "steal" any code in Parts to help
> you with your improvement to SCons.
>
> Best of luck!
> Jason
> ------------------------------
> *From:* Scons-users <scons-users-bounces at scons.org> on behalf of Hua
> Yanghao <huayanghao at gmail.com>
> *Sent:* Wednesday, February 21, 2018 3:29 PM
>
> *To:* SCons users mailing list
> *Subject:* Re: [Scons-users] Provide default Import to SConscript
>
> Hi Jason,
> Indeed it was not Parts, sorry it is my bad.
>
> I will give parts a close look.
>
> Best Regards,
> Yanghao
>
> On Wed, Feb 21, 2018 at 9:53 PM, Jason Kenny <dragon512 at live.com> wrote:
> > If the namespace object in parts helps you with the import export fixes
> you
> > would like to make. Please feel free you use it/tweak it make this happen
> >
> > Jason
> > ________________________________
> > From: Scons-users <scons-users-bounces at scons.org> on behalf of Bill
> Deegan
> > <bill at baddogconsulting.com>
> > Sent: Wednesday, February 21, 2018 2:35 PM
> > To: SCons users mailing list
> > Subject: Re: [Scons-users] Provide default Import to SConscript
> >
> > Yangao,
> >
> > Please keep us up to date with your efforts.
> > Take a look at our developer guide, any such would need docs and tests
> to be
> > considered for inclusion to SCons, and any major changes would have to
> have
> > support of the community.
> >
> > I don't have any time or energy to contribute, I'm working on some core
> > SCons logic that requires all the time I have available.
> >
> > -Bill
> > SCons Project Co-Manager
> >
> >
> > On Wed, Feb 21, 2018 at 3:22 PM, Bill Deegan <bill at baddogconsulting.com>
> > wrote:
> >
> >
> >
> > On Wed, Feb 21, 2018 at 2:59 PM, Hua Yanghao <huayanghao at gmail.com>
> wrote:
> >
> > Hi Bill,
> >
> >> SCons is meant to be a python based make replacement.
> >
> > This is actually very much not true.
> >
> >
> > From the scons.or website:
> > "SCons is an Open Source software construction tool—that is, a
> > next-generation build tool. Think of SCons as an improved, cross-platform
> > substitute for the classic Make utility with integrated functionality
> > similar to autoconf/automake and compiler caches such as ccache. In
> short,
> > SCons is an easier, more reliable and faster way to build software."
> >
> >
> > Make is really just dispatching
> > commands/keeping track of dependencies and timestamps ... it does not
> > provide any Scons Tools libraries etc. In my view somehow scons is
> > stuck in the middle of "Make" and a comprehensive build framework like
> > "Kbuild", more accurate, yet more difficult compared to pure Make for
> > small things, and yet again more difficult compared to full-fledged
> > build system due to the lack of a common build framework.
> >
> >
> >
> >
> > How much time are you willing to commit to development and ongoing
> support
> > of your changes?
> >
> >
> >
> >> What your suggesting is probably more along the lines of Parts? (Jason)
> >> (Which is build on top of SCons).
> >
> > I think I saw parts project quite some time ago on company intranet
> > ... , but wasn't really what I wanted. I want a single super repo for
> > everything a project requires, as compared to be able to build
> > independent small things and then stitch them together. Kbuild is
> > really what I wanted, kbuild would be perfect if it is build on top of
> > python instead of those eye-hurting shell script ... so  I setup and
> > build a extremely similar (even better in many ways such as
> > inter-configuration dependencies) thing in python/scons (only took a
> > few days for the very first working version).
> >
> >> So if I understand properly, you want to add an alternative version of
> >> SConscript where the files would be presented and entirely different set
> >> of
> >> globals to work with?
> >
> > Yes, exactly. to bring SConscript from stone-age to industrial-age,
> > and yet still allow you to use chisel if you insist ... :)
> >
> >
> > That's nice. Good luck with your efforts.
> >
> >
> >
> >
> >
> > _______________________________________________
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-- 
Gary
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