Lilypond-book

[Jozsa Marton]

I use lilypond-book to make a songbook.
All of my songs are in their own directory, and all of them contains the
line:

\include "../global-settings.ly"

to have a uniform look for all the songs.

In songbook.lytex I refer to them as:

\lilypondfile{songs/SONGNAME/SONGNAME.ly}

Well, compiling with lilypond-book doesn't work well, because it will
not find "../global-settings.ly", because it compiles the SONGNAME.ly
files from the directory where lilypond-book was started from, and not
from the directory where SONGNAME.ly is.

Perhaps it would be better if ly files were compiled in there own
directory and then copied to the directory of invocation.