[llvm-dev] 404s within LLVM documentation

James Henderson via llvm-dev llvm-dev at lists.llvm.org
Thu Aug 29 02:19:49 PDT 2019

Patrick, how long does the crawl take? I suspect if we fixed internal
documentation links so that they point to local copies of documentation
when building locally it would be quite quick (no actual idea though). That
in turn would probably make it feasible to add to the existing
documentation build bots, I think.


On Thu, 29 Aug 2019 at 03:47, Neil Nelson via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Patrick, You have identified a good way to do this. Given it is likely
> that the links are to files in a directory structure on a single server
> with that file structure/path given by the link text, as we see in your
> dead link list, and that in a good number, perhaps likely a large majority
> of the cases, that the file names (less the directory path) are unique,
> It would be a fairly direct procedure to associate links by their file
> name (less path) with file locations. The process would then update the
> links for the correct paths, list links without an existing file, and list
> dead links having more than one existing file with the same name.
> The frequency of that run would depend on the frequency of dead-link
> discovery that the run could provide.
> Regards, Neil Nelson
> On 8/28/19 7:52 PM, Patrick Nappa via llvm-dev wrote:
> Hi all,
> I'm currently in the process of updating the Kaleidoscope tutorials (first
> and foremost, the ORC/BuildingAJIT ones), and I've noticed a fair few 404s
> which are lingering within the current visible documentation. Some of these
> don't seem to have linked to existing pages for a while.
> I was wondering if there was a way to set up a check in the buildbot to
> ensure that documentation doesn't break between builds? I'm happy to fix
> the current dead links I've found (see below) but thought it might be wise
> to set up a more automated approach in the future. Does anyone have any
> tips on how I'd go about doing this/if this should be set up at all?
> I ran a web crawler to find each of the dead links (this may not be
> exhaustive), and they are as follows:
> https://llvm.org/docs/TestSuiteMakefileGuide
> https://llvm.org/docs/doxygen/structLICM.html
> https://llvm.org/docs/tutorial/LangImpl5.html#for-loop-expression
> https://llvm.org/docs/tutorial/LangImpl7.html#user-defined-local-variables
> http://llvm.org/docs/lnt/modindex.html
> https://llvm.org/docs/tutorial/MyFirstLanguageFrontend/LangImpl6.html#user-defined-unary-operators
> https://llvm.org/docs/tutorial/MyFirstLanguageFrontend/LangImpl5.html#for-loop-expression
> https://llvm.org/docs/tutorial/MyFirstLanguageFrontend/LangImpl7.html#user-defined-local-variables
> https://llvm.org/docs/tutorial/LangRef.html#instruction-reference
> https://llvm.org/docs/tutorial/MyFirstLanguageFrontend/LangImpl4.html#adding-a-jit-compiler
> https://llvm.org/docs/tutorial/WritingAnLLVMPass.html
> https://llvm.org/docs/tutorial/Passes.html
> https://llvm.org/docs/tutorial/ProgrammersManual.html#viewing-graphs-while-debugging-code
> https://llvm.org/docs/tutorial/SourceLevelDebugging.html
> https://llvm.org/docs/tutorial/Frontend/PerformanceTips.html
> https://llvm.org/docs/tutorial/GetElementPtr.html
> https://llvm.org/docs/tutorial/GarbageCollection.html
> https://llvm.org/docs/tutorial/ExceptionHandling.html
> https://www.llvm.org/docs/doxygen/structLICM.html
> http://llvm.org/docs/TestSuiteMakefileGuide
> http://llvm.org/docs/doxygen/structLICM.html
> https://www.llvm.org/docs/TestSuiteMakefileGuide
> http://llvm.org/docs/tutorial/LangImpl5.html#for-loop-expression
> http://llvm.org/docs/tutorial/LangImpl7.html#user-defined-local-variables
> Some of these are trivial mistakes (i.e.
> https://llvm.org/docs/tutorial/LangRef.html#instruction-reference ->
> https://llvm.org/docs/LangRef.html#instruction-reference), and some
> require a bit more inspection.
> Regards,
> Patrick
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