depends           perl                                           &&
optional_depends  gmp  ""  "--without-gmp"  "for GMP support"    &&
optional_depends  gdbm ""  "--without-gdbm" "for GDBM support"   &&
optional_depends  icu  ""  "--without-icu"  "for ICU support"    &&
optional_depends  openssl  '' '' 'crypto support'  &&
optional_depends  pcre     '' '' 'regex support'   &&
optional_depends  readline '' '' 'line editing'    &&
optional_depends  gettext  '' '' 'multilingual support'
