[Scons-users] Question over variant directory, and default script name

[RW]

On 7 May 2017 at 15:20, Bill Deegan <bill at baddogconsulting.com> wrote:

> See responses inline below
>
>
> On Sun, May 7, 2017 at 8:37 AM, RW via Scons-users <scons-users at scons.org>
> wrote:
>
>> Hi,
>> I've recently been looking at using SCons
>> since I'm quite into python and this is a very easy to read and easy to
>> debug build system.
>>
>> 1. The first question is surrounding the variant directory
>> I'm not sure if this is by design. But I've noticed with the variant_dir
>> option for SConscript. The destination directory for the build needs to be
>> underneath the location of the SConscript file
>>
>> So for example this will not work (just claims the build is up to date):
>> import os.path as path
>> testdir1 = path.abspath('../../Build/LibBuild/glue')
>> SConscript('ExampleSource/SConscript.py', variant_dir=testdir1)
>>
>> This however will work:
>> import os.path as path
>> testdir1 = path.abspath('Build/LibBuild/glue')
>> SConscript('ExampleSource/SConscript.py', variant_dir=testdir1)
>>
>> It's not that big of an issue since I can just place a script at the root
>> of the project which calls the other script lower down.
>> and place the variant directory in the root script
>> Not sure if this is by design, a bug, or a feature request.
>>
>
> Safe to assume you are running scons from a directory which is not the
> parent of the variant dir?
> If so then it's expected. SCons defaults the target to . (the current
> directory) which includes every directory beneath it.
> You can work around this by using Default()
>

Yep that's true
Thanks for the info I'll look into Default()


> See: http://scons.org/doc/production/HTML/scons-man.html
> For more detail.
>
>>
>>
>> 2. The second question I think is more of a feature request
>> Typically I use Visual Studio with python tools for writing and debugging
>> python. However VS only recognizes python scripts if the file extension is
>> .py
>>
>> The way I get around this is to have the following in the SConstruct file
>> execfile('SConstruct.py')
>>
>> Followed by the real script in the SConstruct.py file
>> to get intelisense working within Visual Studio I usually also place the
>> following at the top of the script (which isn't needed but helps auto
>> completion)
>> import SCons.Script
>> from SCons.Environment import Environment
>>
>> Would it be possible to set Scons to use SConstruct.py if SConstruct
>> isn't detected in the directory?
>>
>
> Can't think of any reason not to. Please file an enhancement request on
> scons.tigris.org (our bug tracker)
>
> That said, I"m a little suprised (but not a lot) that there's no way to
> set default language types for files named any particular way..
>

Thanks
now filed a report here
http://scons.tigris.org/issues/show_bug.cgi?id=3039


>
>> For info I put up a blog post a while back on debugging SCons scripts
>> within Visual Studio via python tools
>> http://grbd.github.io/posts/2016/07/27/scons-builds-with-visual-studio/
>>
>> Many Thanks,
>> Richard
>>
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>>
>
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