[Scons-users] target-specific variables

[Bill Deegan]

 env.SharedLibrary(target,sources,
CPPDEFINES=env['CPPDEFINES"]+['my','new','defines'])

On Thu, Feb 16, 2017 at 10:33 AM, Stefan Seefeld <stefan at seefeld.name>
wrote:

> On 16.02.2017 13:18, Bill Deegan wrote:
> > Stefan,
> >
> > Yes.
> >
> > env.SharedLibrary(target,sources, CPPDEFINES=...)
> > You can add any Envinronment() variable to any builder and it's scope
> > is limited to that builder.
> >
> > You can see this in the manpage (and likely in the users guide as well)
> >
> > It is possible to override or add construction variables when calling
> > a builder method by passing additional keyword arguments. These
> > overridden or added variables will only be in effect when building the
> > target, so they will not affect other parts of the build. For example,
> > if you want to add additional libraries for just one program:
> >
>
> Right, I understand all that. My problem is that specifying CPPDEFINES
> that way will replace the existing set of flags, while I merely want to
> append to them. Thus, I was looking for a way to do the equivalent of
> env.AppendUnique(CPPDEFINES=...), but per target (and without the
> overhead of cloning an environment).
>
> It seems I'll have to follow William's advice and use Clone().
>
> Thanks,
>         Stefan
>
> --
>
>       ...ich hab' noch einen Koffer in Berlin...
>
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