Binary package “libgs-dev” in ubuntu focal

interpreter for the PostScript language and for PDF - Development Files

 GPL Ghostscript is used for PostScript/PDF preview and printing.
 Usually as a back-end to a program such as ghostview, it can display
 PostScript and PDF documents in an X11 environment.
 .
 This package provides the development files for the GPL Ghostscript
 library which makes the facilities of GPL Ghostscript available to
 applications.