anchor.diff:  PACKAGECONFIG[sqlite3] = "--enable-sqlite,--disable-sqlite,sqlite3,${PN}-plugin-sqlite"
   PACKAGECONFIG[stroke] = "--enable-stroke,--disable-stroke,,${PN}-plugin-stroke"
   PACKAGECONFIG[swanctl] = "--enable-swanctl,--disable-swanctl,,libgcc"
  +PACKAGECONFIG[curve25519] = "--enable-curve25519,--disable-curve25519,, ${PN}-plugin-curve25519"
   
   # requires swanctl
   PACKAGECONFIG[systemd-charon] = "--enable-systemd,--disable-systemd,systemd,"
  
positive.code: 
  EXTRA_OECONF += "${@bb.utils.contains('DISTRO_FEATURES', 'systemd', '--with-systemdsystemunitdir=${systemd_unitdir}/system/', '--without-systemdsystemunitdir', d)}"
  
  PACKAGECONFIG ?= "curl gmp openssl sqlite3 swanctl \
          ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', 'systemd-charon', 'charon', d)} \
  "
  PACKAGECONFIG[aesni] = "--enable-aesni,--disable-aesni,,${PN}-plugin-aesni"
  
negative.code:     ${PN}-plugin-x509 \
      ${PN}-plugin-xauth-generic \
      ${PN}-plugin-xcbc \
      "
  
  RPROVIDES:${PN} += "${PN}-systemd"
  