如何使用rvm在OS_X 10.9上安装ruby 2.1.0？ （没有可用的二进制红宝石：osx/10.9/x86_64/ruby）

我正在尝试安装 ruby​​ 1.9.3-p545 或 ruby​​-2.1.0 或 ruby​​-2.1.1，但失败了......

我的环境：

• OS_X 10.9 x86_64
• RVM 1.25.20

来自终端的错误：

bmalets$ rvm install 1.9.3-p545
Searching for binary rubies, this might take some time.
No binary rubies available for: osx/10.9/x86_64/ruby-1.9.3-p545.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
Checking requirements for osx_port.
Installing macports......................................................bmalets password required for 'make install': 
......................
Installing requirements for osx_port.
Updating system............
Error running 'requirements_osx_port_update_system ruby-1.9.3-p545',
showing last 15 lines of /Users/bmalets/.rvm/log/1394647562_ruby-1.9.3-p545/update_system.log
checking Mac OS X version... 10.9.2
checking Xcode location... /Applications/Xcode.app/Contents/Developer
checking Xcode version... 5.0.2
checking for gcc... /usr/bin/llvm-gcc-4.2
checking whether the C compiler works... no
configure: error: in `/opt/local/var/macports/sources/rsync.macports.org/release/base':
configure: error: C compiler cannot create executables
See `config.log' for more details
shell command "cd /opt/local/var/macports/sources/rsync.macports.org/release/base && CC=/usr/bin/llvm-gcc-4.2 ./configure --prefix=/opt/local --with-tclpackage=/Library/Tcl --with-install-user=root --with-install-group=admin --with-directory-mode=0755 --enable-readline && make && make install" returned error 77
DEBUG: Error installing new MacPorts base: shell command failed (see log for details)
    while executing
"macports::selfupdate [array get global_options] base_updated"
Error: /opt/local/bin/port: port selfupdate failed: Error installing new MacPorts base: shell command failed (see log for details)
++ return 1
++ return 1
Requirements installation failed with status: 1.

请帮忙。

附： 我尝试更新我的命令行工具，但也失败了：

我尝试更新端口：sudo port -v selfupdate，它要求我提供命令行工具:)

bmalets$ sudo xcode-select --install
xcode-select: note: install requested for command line developer tools

嗯，我也遇到了类似的问题。尽管我不确定细节，但我终于解决了......T_T

1. 手动下载最新的命令行工具https://developer.apple.com/downloads/index.action?name=for%20Xcode%20- https://developer.apple.com/downloads/index.action?name=for%20Xcode%20-

2. 安装自制程序

3. run rvm requirements, and it will download some packages automatically

4. WORK!