[Scons-users] What is the best approach with SConstruct calling SConscript

[Pierre-Luc Boily]

>How do you know now which SConscripts need which variantdir and
Environment()?

I have the following statement at the beginning of each SConscript file  :

|if (env['ENV']['CONFIG'] == "win32"):
or
|if (env['ENV']['CONFIG'] == "win64"):
or
|if (env['ENV']['CONFIG'] == "win32") or (env['ENV']['CONFIG'] == "win64"):

Because of this logic, you then need to open 2 different command prompts,
one with config=win64 and the other one with config=win32.  This is really
inefficient, I want to get rid of the starting if condition from my
SConscript file.

Instead, I want my SConscript to have access to all environment and, if
needed, do whatever for every environment or only win32, or only win64.  

I much prefer the decentralized way, where my SConscript files know how and
what to do instead of having this knowledge in the SConstruct.

To accomplish this, I know that I will have a problem with my variant dir. 
It /might /be not possible anymore to specify variant_dir at the root
because SConstruct doesn't know about SConscript.  I see two alternatives :

1 - Remove variant_dir from SConscript calls and use VariantDir in
SConscript file (is it possible?). 
2 - Still use variant_dir like this 
|os.path.join(common_env['VARIANTDIRROOT'], whateverPath)
instead of 
|os.path.join(common_env['VARIANTDIRROOT'], whateverPath,
common_env['CONFIG'])

Then, my SConscript files will use Library as is : env.Library(target =
win64/libName, source = source) or env.Library(target = win32/libName,
source = source).  

If there a solution more appropriate with scons?


>Also, why use env['ENV']['YOUR_VARIABLE_HERE'], instead of
env['YOUR_VARIABLE_HERE'] ?

That is a good point that I never thought about.  Seeing you asking this
question, I am realizing that for most part of my variables, using ENV is
useless.  I suspect that I will have 2/3 variables needed in ENV because
some 3rdParties are looking there (windows environnement variables).

Thx!




--
View this message in context: http://scons.1086193.n5.nabble.com/What-is-the-best-approach-with-SConstruct-calling-SConscript-tp40704p40710.html
Sent from the Users mailing list archive at Nabble.com.