[Scons-users] Let directory depend on file? (auto generated sources)

[Dirk Bächle]

Hey Stijn,

you're really making some progress there, nice. ;) Find some more tips 
below...

On 03.12.2014 11:39, Stijn De Ruyck wrote:
>
> Got it, everything works as expected now!
>
> This is what I have:
>
> import os
>
> import fnmatch
>
> import glob
>
import re
>
> def autogen_emitter(target, source, env):
>
>         #TODO: replace with egrep/awk on “namespace” in mst.odl and 
> fetch stdout
>
Don't start to "shell out", solve this in Python directly:

     fpath = str(source[0])
     target = []
     if os.path.isfile(fpath):
         with open(fpath, "r") as f:
             contents = f.read()
             re_namespace = re.compile(r"namespace ([^\s]+)")
             for m in re_namespace.finditer(contents):
                 target.append(m.group(1)+".c")

, untested and just to give you a direction.
>
>         target = ['source1.c','source2.c'] #don't include the original 
> dummy target
>
>         return target, source
>
> env = Environment()
>
> env.CacheDir(".sconsCache")
>
> sources = ['hello.c']
>
> autogenBuilder = Builder(
>
>         #TODO: replace with call to installModel.sh
>
I would try to get rid of the "installModel.sh". Am I assuming right 
that it's not doing anything more than calling your ODLC compiler with a 
bunch of options? Then, you should try to write and use a proper ODL 
Builder instead...and pass the required flags and sources to it:

     env = Environment(tools=['default','odl'])
     env['ODLFLAGS'] = ['-whatever','-you','-need']
     env.Odl('mst.odl')
     env.Program(Glob('*.c'))

This is what it *could* look like...

Best regards,

Dirk

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