[Scons-users] How to create multiple tasks/jobs from a single builder invocation

[Matano, Rocco]

Hi Dirk,


> On 14.05.2014 08:46, Matano, Rocco wrote:

> > I have written a number of custom scons builders and I think I understand the

> basic concepts of those.

> >

> > But now I am facing a task that I don't know how to solve. I would

> > like to write a custom builder that takes a list of source files and

> > creates a single scons task / job for each source file, so that scons will work off

> those tasks in parallel if '--jobs=N' was given on the command line.

> >

> > When compiling C files like this

> >

> > objs = env.Object(source=['file1.c', 'file2.c', 'file3.c', 'file4.c'])

> >

> > that parallelism is achieved out of the box.

> >

> > I would like to write a builder that also achieves that. I would like to be able to

> invoke that builder similarly:

> >

> > targets = env.CustumBuilder(source=['file1.ext', 'file2.ext',

> > 'file3.ext', 'file4.ext'])

> >

> > So my question is:

> > What do I have to do when writing a custom builder in order to achieve that

> parallelism?

>

> if I remember correctly, the Builder() constructor offers a keyword "single_source",

> which should do what you want. Please consult the MAN page additionally.



"single_source" does exactly what i was looking for :-)

Thank you for your immediate and helpful support.

Regards,
Rocco


Rocco Matano
Senior Software Developer

Basler AG
An der Strusbek 60-62
22926 Ahrensburg
Germany

Tel. +49 4102 463 384
Fax +49 4102 463 46 384

Rocco.Matano at baslerweb.com

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