安装Xcode4.3后无法获取MacPort功能

Question

我在让MacPorts正常工作时遇到问题。我刚刚安装了OSX Lion 10.7.3，我首先下载并安装了MacPorts，然后在阅读了需求之后，我从App Store下载了Xcode4.3，然后安装了它。我启动了Xcode，它看起来是可操作的和功能性的。但是，当我尝试使用MacPorts进行移植时，它给出了以下错误消息(摘录)：

Warning: xcodebuild exists but failed to execute
Warning: Xcode does not appear to be installed; most ports will likely fail to build.

我听从了以下建议：

How do i install additional packages for Xcode on OSX Lion to allow MacPorts to work

并从Xcode中的首选项安装了command_line_tools_for_xcode。我关闭了Xcode，并再次得到错误：

$ sudo port install libsocketsPassword:
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 libsockets
--->  Dependencies to be installed: openssl zlib
--->  Extracting zlib
Error: Couldn't determine your Xcode version (from '/usr/bin/xcodebuild -version').
Error: 
Error: If you have not installed Xcode, install it now; see:
Error: http://guide.macports.org/chunked/installing.xcode.html
Error: 
Error: Target org.macports.extract returned: unable to find Xcode
Error: Failed to install zlib
Log for zlib is at: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_archivers_zlib/zlib/main.log
Error: The following dependencies were not installed: openssl zlib
Error: Status 1 encountered during processing.

我不确定下一步该怎么做。如何排除Xcode和MacPort接口的故障？

Answer 1

理论上，如果你安装了Xcode4.3 (在/Applications中)，这应该是可行的：

$ sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer/

(并且您已经安装了可选的命令行工具)

Answer 2

安装"Command Line Tools for Xcode“包后，一切都会正常工作。你可以从这里获得它：https://developer.apple.com/downloads/index.action#

Answer 3

请参阅MacPorts migration instructions for Xcode 4.3。

说明非常复杂。您需要运行xcode-select来设置新的工具路径，在macports.conf中更新developer_dir (如Henk Poley所述)，重新安装MacPorts ( ouch)，最后卸载并重新安装所有端口(双击)。

编辑:执行上述操作后， libpvx仍无法安装。还需要两个额外的步骤：

1. sudo ln -s /Developer /
2. sudo ln -s /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs /SDKs

YMMV如果你安装了不同的端口！