LilyPond uses /usr/local libs rather than its own on Mac OSX
Originally created by: v.villenave
This problem has been reported several times in the past:
http://old.nabble.com/Mac-OS-X%3A-%27lilypond%27-calling-stuff-in--usr-local--ts27444536.html
http://old.nabble.com/Lilypond-2.12.3-1-crashes-on-Mac-OS-X-10.5.7-ts28950412.html
Apparently, if LilyPond finds some libraries it needs in /usr/local, it will use these instead of the ones embedded in /Applications/LilyPond.app/*.
This may lead to compatibility issues, and even (judging from the aforementioned reports) prevent LilyPond from working altogether.
Original URL: https://sourceforge.net/p/testlilyissues/issues/1307