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.
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.