Custom Build Process With Predefined Model Graphs

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Taylor
Taylor on 22 Nov 2025 at 2:23
Commented: Walter Roberson on 22 Nov 2025 at 4:37
I have a predefined model structure with well defined dependencies. Is there a way I can can manually build my model tree one model at a time without performing a dfs of the entire modelling tree for changes?
I'm generatig code from a relatively large system (200+ model references) which may be 3-4 layers deep. I'm finding that every model rebuild takes 30+ minutes even with parallel builds turned on despite only one model within the build tree changing. I suspect the cause of these slow builds is Simulink needs to first perform a depth first search of the entire model and recalculate the structural checksum for each model in the tree before rebuilding the individual changed models.
My thought is if I use a predefined model tree (possibly integrated into bazel), I can avoid the need to rebuild/check so many models for changes. As best I can tell, slbuild allows you to rebuild a single reference model, but if that reference model consists of other reference models, a dfs is performed and the complete tree is rebuilt.
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Walter Roberson
Walter Roberson on 22 Nov 2025 at 4:37
I would not expect a depth-first search of the entire model to take more than a relatively small number of seconds.

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