尝试使用pip安装bcrypt时出现此错误.我在几个地方安装了libffi(Xcode OS X SDK和自制软件),但我不知道如何告诉pip寻找它.有什么建议？
Downloading/unpacking bcrypt==1.0.2 (from -r requirements.txt (line 41))
Running setup.py egg_info for package bcrypt
OS/X: confusion between 'cc' versus 'gcc' (see issue 123)
will not use '__thread' in the C code
c/_cffi_backend.c:14:10: fatal error: 'ffi.h' file not found
#include <ffi.h>
^
1 error generated.
Traceback (most recent call last):
File "<string>", line 16, in <module>
File "/Users/cody/virtualenvs/analytics/build/bcrypt/setup.py", line 104, in <module>
"Programming Language :: Python :: 3.3",
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/core.py", line 112, in setup
_setup_distribution = dist = …