[Scons-users] Print out messages only if target is building

[Anna Cheremnykh]

Hi,

I stuck with a problem: I want to print message only when given 
target(Scinscript) is building.
What we have: several samples, each sample in separate directory with 
separate Sconscript. Some of samples require 3rdparty SDKs and 
environment variables set to these SDKs. But if developer doesn't have 
such env var - sample build should be just skipped without errors.
So in sconsripts we added something like this:

if not os.getenv('SOME_SDK_ROOT'):
     print('SOME_SDK_ROOT  not found, ' + sample_name + ' build skipped')
     Return()

I understand that scons read all sconsript files first. And I see this 
message every time even if I build another samples or another 
components. So my question how NOT to print messages if I call another 
target from another Sconscript? Thanks!

-- 
Anna Ch.