The documentation seems spotty and inadequate compared to when I tried this a few years ago. I feel hopelessly lost.
I found
http://www.lilypond.org/doc/v2.19/Documentation/usage/text-editor-support. This tells me I need to do a "make install". This implies I need the source to do anything at all with emacs mode? I found a source bundle
here, along with the warning "We do not recommend that you attempt to build LilyPond yourself; almost all user needs are better met with the pre-built version." Unclear whether using emacs is included in "almost all user needs" or not.
OK, so I download the source bundle, and now I'm left with no more instructions than "make install". But in what directory? I tried it in the elisp directory and the lilypond directory above it, but in both cases I got errors.
I also tried skipping the install step and just directly pointing at the directories. This seems to give me at least a partial solution, although it's warning me that lilypond-words doesn't exist. Probably because it needs to compile that somehow?
Am I missing something basic/obvious/simple? Any advice is welcome. I'd love to get emacs and lilypond working. I'm happy to contribute a doc fix to make this easier for others later.
rif