[Scons-users] SCons upgrade: 2.3.0 -> recent

[Bill Deegan]

I'd suggest taking a look at the CHANGES.txt for 4.5.2 -> 2.3.0 and see
what's changed there.

Beyond that mwichmann's dead on with the items.
Please reach out as you run into issues.
It might be more timely if you ask on our discord server.

On Fri, Mar 24, 2023 at 9:49 AM Mats Wichmann <mats at wichmann.us> wrote:

> On 3/24/23 02:40, Stephan Schwarzmann wrote:
> > Hello,
> >
> > some years back, I've inherited a project that used SCons. At that
> > time, we've used the scons version (<2.3.0) coming via Linux package
> > manager (apt).
> >
> > One of the SCons updates broke our build system (I think the builds
> > abotred with "cyclic dependencies"), so I pinned the SCons version in
> > our project to 2.3.0.
> >
> > Now we'd like to get rid of python2.7 dependencies and move to a recent
> > SCons version.
> >
> >
> > Could someone provide some information about the To-Dos, effort and
> > pitfalls for an upgrade to a recent version, let's say 4.5.2?
> >
> > Does SCons provide backward compatibility, i.e. theoretically our build
> > scripts should run with a newer SCons version out-of-the-box?
>
> There are usually two parts.
>
> One is do deal with the Python issues.  You can try running 2to3 on your
> build scripts without the -w flag (so it only shows you what it would do
> and doesn't change the files in place) and see what it proposes. This
> will usually not be a lot - print changing to a function, some changes
> in exception syntax, methods that now return an iterator rather than a
> list.
>
> The other part is a small number of legacy SCons functions were removed
> that had been deprecated since before v 1.0.  If your build is really
> old it might be using these, there are replacements which have been in
> place since that ancient time.
>
> It *might* be that easy, or it might not.  People here and on the
> discord chat server can help.
>
>
>
>
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