libxstrp4-camlp4-dev 1.8.2-2build1 (s390x binary) in ubuntu focal

 This camlp4 syntax extension interprets the dollar notation in
 strings and in included files.
 .
 It can:
  * include whole file in your OCaml code
  * define a format '%x' conversion to display variables
  * interpolate '$x' as well as '
  * take into account record field and module names