#option platform cygwin|mingw|mswin #option nodynamic Win32API bigdecimal cgi/escape #dbm digest digest/md5 digest/rmd160 digest/sha1 digest/sha2 enumerator etc fcntl #gdbm #io/wait nkf #openssl #pty racc/cparse #readline #ripper sdbm socket stringio strscan #syslog win32ole #zlib