[Scons-users] How to import the env through which was env.SConscript( called

[Zarko Berberski (Aditi Staffing LLC)]

I do a clone and call Sconcript with that clone, but that connection seems to be lost
>             SConsEnvironment.SConscript in SConscript line 541        --- still has self (which is env)
               _SConscript in SConscript line 250                                         --- env connection lost

I can’t import by name since identical scripts needs to build in 2 folders (which may become -  variant_dir) => they shouldn’t know which env to import – they should work with the one that’s given to them.


env_LKG = env.Clone()
    no_prior, top_LKG = env_LKG.SConscript('ocaml-LKG/ocaml-output.scons')





From: Scons-users [mailto:scons-users-bounces at scons.org] On Behalf Of Bill Deegan
Sent: Monday, June 12, 2017 19:31
To: Mats Wichmann <mats at wichmann.us>
Cc: SCons users mailing list <scons-users at scons.org>
Subject: Re: [Scons-users] pointer to info on using a project-built tool?

O.k. Do you mean Builder() ? Or something else when you are saying tool?
Is this the bit of logic you expect to have a absolute path?
json2cbor = env.get('BUILD_DIR') + 'resource/csdk/security/tool/json2cbor'
-Bill

On Mon, Jun 12, 2017 at 4:58 PM, Mats Wichmann <mats at wichmann.us<mailto:mats at wichmann.us>> wrote:
On 06/12/2017 01:12 PM, Bill Deegan wrote:
> Any chance you can post any of your code to help better understand your
> issue?

sure, the basics I can put here if it helps.  (I was actually hoping
there was some reading somewhere so I didn't need to pester people :)

meanwhile we're talking about the cross-build issue, which I guess is
something separate.  That problem is the tool can't really be built "in
isolation" which is what would make more sense for how it wants to be used.

In a generic place, before descending into various subdirectories:


######################################################################
# Generate Cbor from json files
######################################################################
json2cbor = env.get('BUILD_DIR') + 'resource/csdk/security/tool/json2cbor'

def generate_actions(source, target, env, for_signature):
    Depends(target, "json2cbor")
    return " %s %s %s" % (str(json2cbor), source[0], target[0])

builder = Builder(generator = generate_actions,
                  suffix = '.dat',
                  src_suffix = '.json')

env.Append(BUILDERS = {'Cbor' : builder})


In one of those subdirectories, in a tool directory dedicated only to
the conversion tool, which does however needs bits from elsewhere in the
tree:


######################################################################
# Source files and Targets
######################################################################
json2cbor_src = ['json2cbor.c']
json2cbor = tools_env.Program('json2cbor', json2cbor_src)
Alias("json2cbor", [json2cbor])
tools_env.AppendTarget('json2cbor')


and then in a place that has data files which need conversion:


    for json_file in Glob('*.json'):
        examples += examples_env.Install(svr_db_build_dir, str(json_file))
        examples += examples_env.Cbor(json_file)

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