Prerequisites page has link to nonexistent section of Suggested Workflows page

[rlee287]

The prerequisites page states that

Otherwise, you'll need LLVM installed and llvm-config in your path. See this section for more info.

Where "this section" is a link to https://rustc-dev-guide.rust-lang.org/building/suggested.html#skipping-llvm-build.

However, the Suggested Workflows page does not contain information on skipping the LLVM build. Can this link be corrected or removed?

(Incidentally, I'd like to know if it is possible to use the system LLVM instead of either building LLVM or downloading LLVM from Rust CI for building rustc. I wasn't able to find a definitive answer to this in the rustc-dev-guide.)

[ehuss]

Essentially you just need to set llvm-config in config.toml.

It looks like it was removed in #1030. @jyn514 I think there are legitimate use cases for needing to use the system LLVM, and having some instructions won't hurt.

[jyn514]

Seems good! I won't have time to add it back for a while though.

[camelid]

I think I already re-added this section back in February. Is this what you were looking for? (Added in 2d42cf7.)

[rlee287]

Looks (to me, at least, since this is the first time I'm building rustc myself) like this does have the relevant information, in which case the link I mentioned should be changed to point to this section instead.