安装Ruby rvm时出现问题（运行configure时出错）
ruby-1.9.3-p0 - #configuring
*ERROR: Error running ' ./configure --prefix=/Users/davedelich/.rvm/rubies/ruby-1.9.3-p0 --enable-shared --disable-install-doc --with-libyaml-dir=/Users/davedelich/.rvm/usr ', please read /Users/davedelich/.rvm/log/ruby-1.9.3-p0/configure.log
ERROR: There has been an error while running configure. Halting the installation.*
SupremeOverlord:~ davedelich$ cat /Users/davedelich/.rvm/log/ruby-1.9.3-p0/configure.log
[2011-12-03 22:09:03] ./configure --prefix=/Users/davedelich/.rvm/rubies/ruby-1.9.3-p0 --
enable-shared --disable-install-doc --with-libyaml-dir=/Users/davedelich/.rvm/usr
configure: WARNING: unrecognized options: --with-libyaml-dir
checking build system type... x86_64-apple-darwin11.2.0
checking host system type... x86_64-apple-darwin11.2.0
checking target system type... x86_64-apple-darwin11.2.0
checking whether the C compiler works... no
configure: error: in `/Users/davedelich/.rvm/src/ruby-1.9.3-p0':
configure: error: C compiler cannot create executables
See `config.log' for more details
您的系统上没有安装C编译器 - 这意味着您必须在Mac上安装XCode！ 它包含了所有的开发工具，包括编译器。
检查您的OSX DVD或记忆棒是否适用于XCode，或在Apple网上查询：
http://developer.apple.com/xcode/
http://developer.apple.com/technologies/tools/
http://www.macworld.com/article/46286/2005/08/installxcode.html
http://developer.apple.com/support/xcode/
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