The following patch is necessary to compile Lilypond 2.11.65 on GCC 4.4
Created attachment 175342 [details, diff] Lilypond patch for GCC 4.4
This has also been submitted upstream. I will post the bug URL when it is accepted.
http://git.savannah.gnu.org/gitweb/?p=lilypond.git;a=commit;h=0bd6948521aef31f0dc9f5e0f7b06ac9f9a6e871
This patch did not make it into upstream's 2.12.0 release but will be included in 2.12.1, coming soon.
Lilypond 2.12.1 has been released and incorporates this fix.
Thanks. I've just added 2.12.1.