\version "2.23.4"

voice =  \relative c'{
\time 4/4 
\key c \major    
e4 e e e e e e e e e e e e e e e e e e e
e4 e e e e e e e e e e e e e e e e e e e
e4 e e e e e e e 
  
}

\score
{
    <<
    \voice
    >>
    \layout {
            %  numéro des mesures, cerclé, décalé, taille réduiteS
      \override Score.BarNumber.stencil
    = #(make-stencil-circler 0.1 0.25 ly:text-interface::print)  
      \override Score.BarNumber.non-musical = #'()
      \override Score.BarNumber.break-visibility =#end-of-line-invisible
      \override Score.BarNumber.self-alignment-X = #LEFT
      \override Score.BarNumber.font-size = #-3
      \override Score.BarNumber #'color = #darkblue
       \override Score.BarNumber #'font-shape = #'italic      
    }
    \midi {}
}