最近在看ruby hacking guide (ruby原始碼完全解說，Rubyソースコード完全解説)這本書。
看到網上有團隊在翻譯，可惜沒有搜尋到翻譯好成果物，只好繼續看日文版的原文了。
從大一開始就學習c了，這麼多年除了學習，還沒有真正使用過c來開發項目。
正好可以通過看ruby source來瞭解一下其中奧妙。
1 從rubyforge下載1.85版的src，解壓縮檔案到指定目錄下。
2 環境準備：我是WindowXp（sp2 jp）+ Cygwin
3 然後開啟指定目錄下解壓縮的readme檔案，按照步驟運行命令。
* How to compile and install
This is what you need to do to compile and install Ruby:
1. If ./configure does not exist or is older than configure.in,
run autoconf to (re)generate configure.
2. Run ./configure, which will generate config.h and Makefile.
3. Edit defines.h if you need. Usually this step will not be needed.
4. Remove comment mark(#) before the module names from ext/Setup (or
add module names if not present), if you want to link modules
statically.
If you don't want to compile non static extension modules
(probably on architectures which does not allow dynamic loading),
remove comment mark from the line "#option nodynamic" in
ext/Setup.
5. Run make.
6. Optionally, run 'make test' to check whether the compiled Ruby
interpreter works well. If you see the message "test succeeded",
your ruby works as it should (hopefully).
7. Run 'make install'
You may have to be a super user to install ruby.
編譯成功，在usr/local/下面產生了編譯後的檔案。
