FAQ - GNU LilyPond Frequently Asked Questions
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General
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I'm stuck, HELP!
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Please read the full online FAQs (http://appel.lilypond.org/wiki?LilyPondFaqs).  Also, please look in the searchable mailinglist archives:

  * help-gnu-music (http://www.mail-archive.com/help-gnu-music@gnu.org)

  * bug-gnu-music (http://www.mail-archive.com/bug-gnu-music@gnu.org)

  * gnu-music-discuss (http://www.mail-archive.com/gnu-music-discuss@gnu.org)

If you are still at loss, send your questions to the mailing list, and not to authors directly.

Installation
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Where is guile, libguileX, guile-config?
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RedHat users need to install guile-1.4 and guile-devel-1.4, Debian users need to get guile1.4, libguile9 and libguile9-dev.

If you're building from source, you need guile 1.3.4 or newer.  Verify that the correct guile, guile-config, and libguile* in your PATH and LD_LIBRARY_PATH (or /etc/ld.so.conf).

I upgraded by applying a patch, and now my configure/build breaks.
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Patches don't include automatically generated files, i.e. configure and files generated by configure.  Regenerate them yourself:

         autoconf
         configure

Is there an emacs mode?
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Yes.  It is included with the source archive as lilypond-mode.el and lilypond-font-lock.el.  If you have an RPM, it is in /usr/share/doc/lilypond-X/.  You have to install it yourself.

Add this to your ~/.emacs or ~/.emacs.el:

         (load-library "lilypond-mode.el")
         (setq auto-mode-alist
           (cons '("\\.ly$" . LilyPond-mode) auto-mode-alist))
         (add-hook 'LilyPond-mode-hook (lambda () (turn-on-font-lock)))

If you have the latest LilyPond-1.3.x Debian package, LilyPond-mode is automatically loaded, so you need not modify your ~/.emacs file.

I downloaded the windows32 port, and it doesn't match the website!
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The website is usually made from the latest snapshots.  Binary releases, in particular the windows32 binaries, are only made every once in a while. They may lag several versions behind the latest version.