Please see this response in another thread discussing the need to build your own extensions if you have built your own Slicer for development purposes.
If you build your own Slicer, you are also expected to build all extensions, to ensure ABI compatibility.
Once you have built Slicer, it is easy to build all extensions, since their build is fully automated. You can bundle any extension in your custom build so that your users don’t need to install any extensions.
You can also try to replicate build environment of official Slicer builds on your computer (so that your custom Slicer build is ABI compatible with extensions in the official app stor…
You can also use the following reference about building extensions:https://www.slicer.org/wiki/Documentation/Nightly/Developers/FAQ#How_to_build_an_extension_.3F
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