python – 如何在OSX 10.7上安装psycopg2

我按照以下程序：

1)$sudo pip install psycopg2

这给了我以下错误

Downloading/unpacking psycopg2
  Running setup.py egg_info for package psycopg2

    no prevIoUsly-included directories found matching 'doc/src/_build'
Installing collected packages: psycopg2
  Running setup.py install for psycopg2
    building 'psycopg2._psycopg' 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 -arch i386 -arch x86_64 -pipe -DPSYcopG_DEFAULT_PYDATETIME=1 -DPSYcopG_VERSION="2.4.3 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x090004 -DPSYcopG_EXTENSIONS=1 -DPSYcopG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -I. -I/usr/include -I/usr/include/postgresql/server -c psycopg/psycopgmodule.c -o build/temp.macosx-10.7-intel-2.7/psycopg/psycopgmodule.o
    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__='/Users/boltellinfomedia/mukul/mukul/build/psycopg2/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record /tmp/pip-8NaS72-record/install-record.txt:
    running install

running build

running build_py

running build_ext

building 'psycopg2._psycopg' 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 -arch i386 -arch x86_64 -pipe -DPSYcopG_DEFAULT_PYDATETIME=1 -DPSYcopG_VERSION="2.4.3 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x090004 -DPSYcopG_EXTENSIONS=1 -DPSYcopG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -I. -I/usr/include -I/usr/include/postgresql/server -c psycopg/psycopgmodule.c -o build/temp.macosx-10.7-intel-2.7/psycopg/psycopgmodule.o

unable to execute llvm-gcc-4.2: No such file or directory

error: command 'llvm-gcc-4.2' Failed with exit status 1

----------------------------------------
Command /usr/bin/python -c "import setuptools;__file__='/Users/boltellinfomedia/mukul/mukul/build/psycopg2/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record /tmp/pip-8NaS72-record/install-record.txt Failed with error code 1
Storing complete log in /Users/boltellinfomedia/.pip/pip.log

2)然后我在网上搜索安装llvm-gcc-4.2并从这个http://developer.apple.com/library/mac/#releasenotes/DeveloperTools/RN-llvm-gcc/_index.html开始
知道我需要安装Xcode

同样从这个psycopg2 installation problem on OSX Lion我开始知道我可以通过macports安装psycopg2但是从这个http://www.macports.org/install.php开始知道我需要再次使用xcode.

3)最后我尝试从苹果商店安装Xcode,它下载了1.6 GB的文件,然后说它现在安装在我的系统上.这是相同的截图

！[macports安装图片] [1]

4)然后我尝试通过http://www.macports.org/install.php提供的dmg文件安装macports,但它说我的系统上还没有安装xcode.这是相同的截图. ！[当试图安装macport时,xcode未安装消息出现] [2]

解决方法:

最有可能的问题是您只从App Store下载了Xcode INSTALLER.您现在需要运行安装程序来安装Xcode.