I don't think the generated configure script was ever in VCS, was it?

The list of dependencies hasn't really changed, the same tools are required to generate the docs AFAIK, only there were configure options added to enable/disable building the documentation (documented in the most obvious place configure --help), whereas before it had explicit make rules to re-generate the docs (IIRC). In both cases building the docs is optional and uses the same tools, unless I missed something.

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