This will install the following files:
/usr/local/man/man1/lilypond.1
+ /usr/local/lib/libflower.{so,a}
/usr/local/bin/lilypond
/usr/local/bin/mi2mu
/usr/local/share/lilypond/*
other options include:
+ --enable-shared
--enable-printing
--enable-optimise
--enable-profiling