[Scons-users] env.Command with build explicit build

[William Deegan]

Kraus,
On Aug 11, 2012, at 11:39 AM, Kraus Philipp <philipp.kraus at flashpixx.de> wrote:


> Hello,

> 

> I'm using an env.Command call with a own function for running some externel command:

> My function shows

> 

> def runfunc(target, source, env) :

>      ### do something in preprocess ###

>       if a :

>          run command 1

>       elif b :

>           run command 2

>       elif c :

>              ### build shared library with scons env.SharedLibrary ####

>       return []

> 

> My problem is the case c. I need at this point a env.SharedLibrary call, so

> that a shared library is build after the function is run. I can create the env

> (which is not a clone of the parameter env, it must be its own structure)

> but in which way I can run the build process explicit?

> I need something link

> 

> envlib = Environment()

> set parameter to envlib

> envlib.SharedLibrary(target="mylib", sources= [...])

> do envlib

> 

> Do you have an idea to solve the problem?


I'm not really sure what it is you want to do from the description above.
Do you know a,b,and c at the time you SConscript is executed, or not until the build tree is being processed by SCons?
If not can you provide a more full example?

If you do, then you probably want a Pseudo-builder, see:
http://www.scons.org/doc/production/HTML/scons-user/c3938.html

No builders are run when the SConstruct/SConscript is processed. They are used to build the DAG for SCons to decide what needs to built, and then the actions they specify are executed.


Hope that helps.
-Bill