Dependency between Command calls

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Dear SCons experts,

Thank your for your last supporting comments!

I have developed a small SConstruct file (attached) that implements to
tool calls via Command().
However, I have a few questions regarding generalization as given in the
comments of the SConstruct file.

The required input file (MyDeps.puml) is also attached.

The output of the two subsequent runs of "scons" are given in Run1.out
and Run2.out.

So, the build is executed as intended, but the toy example is not really
scalable to a real world tool chain.

Could you answer my questions resp. give me some hints, how to make this
a "real" build chain?

Thank you!

Oliver



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