[Scons-users] Replace env['BUILDERS']['Program'] and env.Configure

[Luc Bourhis]

Hi Bill,

thanks for spending time to give me good advices.


>> I am dealing with an existing build system creating many an executable with env.Program(...) and many a shared library with env.SharedLibrary(...). As part of a recent changeset, I have a piece of code that I have built into a static library libofmine.a and a shared library libofmine.so. Then I wish that every executable is linked with libofmine.a whereas every shared library is linked with libofmine.so.

> 

> Sounds like you could get into trouble if the programs link with any of those shared libraries..


I have that under control as those shared libraries are Boost Python extensions whereas the executables have nothing to do with Python. 


>>> You could use a pseudo-builder

>> 

>> Indeed but that would require changing all the env.Program(...) to env.MyProgram(...) and forcing all my collaborators to switch to that. I preferred to try a more transparent approach.

> 

> I'm always wary of any "magic which happens behind the curtain" type solutions.

> Eventually there'll be an issue and then debugging it is a much bigger cost than a clean solution up front. (IHMO)


Generally speaking I fully agree with you and I had quite a dilemma here. 


>> It seemed impossible to modify the environment by Append'ing a library in such a manner that env.Program would pick the static version whereas env.SharedLibrary would pick the shared version. If there is a way to do that, then I would adopt it immediately!

> 

> If you create the shared and static libraries into different directories, then it should be fairly easy.


I am afraid I can't imagine how to do that still.

Best wishes,

Luc