我最近从 10.6 升级到 Mac OS X 10.7。
我决定使用 Python 2.7。
但是当我尝试安装 MySQLdb 模块来运行 Django 时，它失败了：
$ sudo pip install MySQL-python
Downloading/unpacking MySQL-python
[…]
Running setup.py install for MySQL-python
building '_mysql' extension
llvm-gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -mno-fused-madd -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -pipe -Dversion_info=(1,2,3,'final',0) -D__version__=1.2.3 -I/usr/local/mysql/include -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c _mysql.c -o build/temp.macosx-10.7-intel-2.7/_mysql.o -Os -g -fno-common -fno-strict-aliasing -arch x86_64
unable to execute llvm-gcc-4.2: No such file or directory
error: command 'llvm-gcc-4.2' failed with exit status 1
Complete output from command /usr/bin/python -c "import setuptools;__file__='~/Sites/gugsm/build/MySQL-python/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record /tmp/pip-AwMuqj-record/install-record.txt:
running install
running build
[…]
building '_mysql' extension
creating build/temp.macosx-10.7-intel-2.7
llvm-gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -mno-fused-madd -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -pipe -Dversion_info=(1,2,3,'final',0) -D__version__=1.2.3 -I/usr/local/mysql/include -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c _mysql.c -o build/temp.macosx-10.7-intel-2.7/_mysql.o -Os -g -fno-common -fno-strict-aliasing -arch x86_64
unable to execute llvm-gcc-4.2: No such file or directory
error: command 'llvm-gcc-4.2' failed with exit status 1
----------------------------------------
原因是我不再有llvm-gcc二进制gcc文件。
我尝试将 XCode 从 3.something 升级到 4.3.2，但没有帮助。它是一个简单的应用程序，它没有/usr/bin填充llvm-gcc.
我究竟做错了什么？