Ah, that's really unfortunate then, since their license restricts particular uses it's not considered a free software license, just an open source one. I wonder why they picked that instead of something more permissive like BSD.
What mesh format do you use as input for your solver? How do you apply constraints, to geometry or to the mesh? Does your solver work with import files?
This link is dead ... https://github.com/anaiortega/XCproject ... uildingEC2A three-dimensional model of the structure has been built, all the scripts related to this model are hosted here in GitHub.