\version "2.19.6"

compileScore =
#(define-void-function (parser location score)(ly:score?)
   (let ((book
          #{
            \book {
              \include "example-styles.ily"
              \score { #score }
            }
          #}))
     (ly:book-process
        book
        #{ \paper {} #}
        #{ \layout{} #}
       (ly:parser-output-name parser))))

\compileScore
\score {
  \new Staff { c' }
}