include/interval.hh: In member function `T Interval_t<T>::center() const':
include/interval.hh:29: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh:29: error: (if you use `-fpermissive', G++ will accept your code, but allowing the use of an undeclared name is deprecated)
include/interval.hh:29: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh: In member function `void Interval_t<T>::translate(T)':
include/interval.hh:33: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh:34: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh: In member function `void Interval_t<T>::widen(T)':
include/interval.hh:38: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh:39: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh: In member function `void Interval_t<T>::add_point(T)':
include/interval.hh:49: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh:49: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh:50: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh:50: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh: In member function `bool Interval_t<T>::empty_b() const':
include/interval.hh:60: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh:60: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh: In member function `Interval_t<T>& Interval_t<T>::operator+ =(T)':
include/interval.hh:74: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh:75: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh: In member function `Interval_t<T>& Interval_t<T>::operator* =(T)':
include/interval.hh:81: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh:82: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh: In member function `Real Interval_t<T>::linear_combination( Real) const':
include/interval.hh:91: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh:91: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh: In member function `void Interval_t<T>::negate()':
include/interval.hh:97: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh:98: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh:99: error: there are no arguments to `elem' that depend on a  template parameter, so a declaration of `elem' must be available
include/interval.hh:100: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.hh: In member function `void Interval_t<T>::swap()':
include/interval.hh:105: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.hh:106: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.hh:106: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.hh:107: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
In file included from interval.cc:12:
include/interval.tcc: In member function `void Interval_t<T>::set_empty()':
include/interval.tcc:59: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.tcc:60: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.tcc: In member function `void Interval_t<T>::set_full()':
include/interval.tcc:67: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.tcc:68: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.tcc: In member function `T Interval_t<T>::length() const':
include/interval.tcc:75: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.tcc:75: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.tcc:78: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.tcc:78: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.tcc: In member function `T Interval_t<T>::delta() const':
include/interval.tcc:85: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.tcc:85: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.tcc: In member function `void Interval_t<T>::unite(Interval_t<T >)':
include/interval.tcc:95: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.tcc:95: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.tcc:96: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.tcc:96: error: there are no arguments to `elem' that depend on a template parameter, so a declaration of `elem' must be available
include/interval.tcc: In member function `void Interval_t<T>::intersect(Interval _t<T>)':
include/interval.tcc:112: error: there are no arguments to `elem' that depend on  a template parameter, so a declaration of `elem' must be available
include/interval.tcc:112: error: there are no arguments to `elem' that depend on  a template parameter, so a declaration of `elem' must be available
include/interval.tcc:113: error: there are no arguments to `elem' that depend on  a template parameter, so a declaration of `elem' must be available
include/interval.tcc:113: error: there are no arguments to `elem' that depend on  a template parameter, so a declaration of `elem' must be available
include/interval.tcc: In member function `String Interval_t<T>::to_string() cons t':
include/interval.tcc:136: error: there are no arguments to `elem' that depend on  a template parameter, so a declaration of `elem' must be available
include/interval.tcc:136: error: there are no arguments to `elem' that depend on  a template parameter, so a declaration of `elem' must be available
include/interval.tcc: In member function `bool Interval_t<T>::elem_b(T)':
include/interval.tcc:143: error: there are no arguments to `elem' that depend on  a template parameter, so a declaration of `elem' must be available
include/interval.tcc:143: error: there are no arguments to `elem' that depend on  a template parameter, so a declaration of `elem' must be available
make[1]: *** [out/interval.o] Error 1
make[1]: Leaving directory `/var/tmp/portage/lilypond-2.0.3/work/lilypond-2.0.3/ flower'
make: *** [all] Error 2

!!! ERROR: media-sound/lilypond-2.0.3 failed.
Call stack:
  ebuild.sh, line 1539:   Called dyn_compile
  ebuild.sh, line 939:   Called src_compile
  lilypond-2.0.3.ebuild, line 59:   Called die

!!! emake failed
!!! If you need support, post the topmost build error, and the call stack if rel evant.