[Reproducible-builds] [PATCH] Fix parallel doc building

[Bram Moolenaar]

Reiner Herrmann wrote:

> Hi!
> 
> While working on Debian's “reproducible builds” effort [1], we have noticed
> that vim has produced different documentation files on two successive builds [2].
> In one run a generated HTML file didn't contain links to tags, but did
> so on another run (in an otherwise identical environment).
> 
> After checking it locally, it turned out to be related to parallel building.
> The file tags.html (which is not generated from a .txt file) is contained in
> the HTMLS list, but also its own make target.
> The attached patch fixes it by removing tags.html from the HTMLS list.

You mean that there was a cyclick dependency, which confused the build
system.  Looks like your patch removes the cycle and thus fixes it.
 

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