我使用以下命令运行安装
curl -L https://get.rvm.io | bash -s stable --autolibs=3 --ruby
然后我收到一个错误
然后我检查了错误，下面是日志，
[2013-05-18 12:11:22] requirements_osx_port_libs_install
Error:
Error: No valid Xcode installation is properly selected.
Error: Please use xcode-select to select an Xcode installation:
Error: sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer # version 4.6.1
Error:
Warning: xcodebuild exists but failed to execute
Warning: Xcode does not appear to be installed; most ports will likely fail to build.
---> Computing dependencies for apple-gcc42
---> Dependencies to be installed: cctools ld64 llvm-3.2 gcc_select
---> Building llvm-3.2
Error: org.macports.build for port llvm-3.2 returned: command execution failed
Error: Failed to install llvm-3.2
Please see the log file for port llvm-3.2 for details:
/opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_llvm-3.2/llvm-3.2/main.log
Error: The following dependencies were not installed: cctools ld64 llvm-3.2 gcc_select
To report a bug, follow the instructions in the guide:
http://guide.macports.org/#project.tickets
Error: Processing of port apple-gcc42 failed
There were package installation errors, make sure to read the log.
我检查了我的 xcode 版本（我仍然订阅 99 美元，如果这意味着什么），它说这个
xcode 选择版本 2003
我该如何解决这个问题？