# This is for a fictional package `yet another portable hatchpotch generator'.
prefix=/usr/local/opt/site/private # define variable `prefix`
exec_prefix=${prefix} # using variable reference
libdir=${exec_prefix}/lib
includedir=${prefix}/include
just_for_test=$${this is not a part of variable reference} # escape with `$$`

Name: YAPHatchPotchGen
Description: Yet Another Portable HatchPotch GENerator.
Version: 352.9.3
URL: http://www9.yaphatchpotchgen.net  # Don't access.
Requires: piyohogelib-9.0 = 9.5.3
Requires.private: nyorolib-3.0 = 3.0.9
Conflicts: apiyohoge <= 8.3
Libs: -L${libdir} -lyaphatchpotchgen-352.9 # using variable reference
Libs.private: -ll -ly
Cflags: -I${includedir}/piyohogelib-9.0 -I${libdir}/yaphatchpotchgen/include