(compile -s -O2 -d1 php-s11n.scm -X regex-literals -j php-s11n)
(compile -s -O2 -d1 php-s11n.import.scm)
(compile -c -O2 -d1 php-s11n.scm -X regex-literals -unit php-s11n)

(install-extension
  'php-s11n
  '("php-s11n.o" "php-s11n.so" "php-s11n.import.so")
  '((version "1.0.3")
    (documentation "php-s11n.html")
    (exports "php-s11n.exports")))