致命錯誤：在升級到python 3.2並從virtualenv安裝某些模塊後找不到'string.h'文件

Question

我在Mac OSX 10.8（Mountain Lion）上，剛剛安裝了Python 3.2.3。

當使用Python版本從虛擬環境中安裝pycrypto：

$ virtualenv --no-site-packages -p /usr/local/bin/python3.2-32 venv 
$ source venv/bin/activate 
$ pip install pycrypto 

我得到的錯誤：試圖安裝cryptacular時

gcc-4.2 not found, using clang instead 

building 'Crypto.Hash._MD2' extension 

warning: GMP or MPIR library not found; Not building Crypto.PublicKey._fastmath. 

Compiling with an SDK that doesn't seem to exist: /Developer/SDKs/MacOSX10.6.sdk 

Please check your Xcode installation 

clang -fno-strict-aliasing -fno-common -dynamic -isysroot /Developer/SDKs/MacOSX10.6.sdk -arch i386 -arch x86_64 -isysroot /Developer/SDKs/MacOSX10.6.sdk -std=c99 -O3 -fomit-frame-pointer -Isrc/ -I/Library/Frameworks/Python.framework/Versions/3.2/include/python3.2m -c src/MD2.c -o build/temp.macosx-10.6-intel-3.2/src/MD2.o 

src/MD2.c:30:10: fatal error: 'string.h' file not found 

#include <string.h> 

     ^

1 error generated. 

error: command 'clang' failed with exit status 1 

類似的事情發生。

As of version 2.4, Pycrypto says it supports python 3.

I'ved添加一個符號鏈接到Xcode開發文件夾：

$ sudo ln -s /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer /Developer 

但都存在該文件夾中的MacOSX10.7.sdk MacOSX10.8.sdk（不MacOSX10。 6.sdk如上所需）。

我在系統中遺漏了什麼？我該如何告訴它使用其他SDK之一？

Answer 1

得到它做的工作如下：

如上評論，確信命令行工具安裝，這也安裝了系統頭：

Start Xcode, open Xcode -> Preferences... and go to the Downloads tab. Under Components make sure the Command Line Tools are installed; this will also install system headers in system folders.

正如this answer指示，創建符號鏈接到開發商的文件夾：

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

不過，還是要走的錯誤消息：

Compiling with an SDK that doesn't seem to exist: /Developer/SDKs/MacOSX10.6.sdk 

這涉及issue that Python 3.2 assumes you are using Mac OSX 10.6

我固定的，這通過創建從它的符號鏈接到OSX 10.8環境僞造的OSX 10.6環境：

sudo ln -s /Developer/SDKs/MacOSX10.8.sdk MacOSX10.6.sdk 

包安裝成功了。