我在尝试使用 pip 安装 bcrypt 时遇到此错误。我在几个地方(Xcode OS X SDK 和自制软件)安装了 libffi，但我不知道如何告诉 pip 去寻找它。有什么建议吗？
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 = klass(attrs)
File "build/bdist.macosx-10.9-intel/egg/setuptools/dist.py", line 239, in __init__
File "build/bdist.macosx-10.9-intel/egg/setuptools/dist.py", line 264, in fetch_build_eggs
File "build/bdist.macosx-10.9-intel/egg/pkg_resources.py", line 620, in resolve
dist = best[req.key] = env.best_match(req, ws, installer)
File "build/bdist.macosx-10.9-intel/egg/pkg_resources.py", line 858, in best_match
return self.obtain(req, installer) # try and download/install
File "build/bdist.macosx-10.9-intel/egg/pkg_resources.py", line 870, in obtain
return installer(requirement)
File "build/bdist.macosx-10.9-intel/egg/setuptools/dist.py", line 314, in fetch_build_egg
File "build/bdist.macosx-10.9-intel/egg/setuptools/command/easy_install.py", line 593, in easy_install
File "build/bdist.macosx-10.9-intel/egg/setuptools/command/easy_install.py", line 623, in install_item
File "build/bdist.macosx-10.9-intel/egg/setuptools/command/easy_install.py", line 811, in install_eggs
File "build/bdist.macosx-10.9-intel/egg/setuptools/command/easy_install.py", line 1017, in build_and_install
File "build/bdist.macosx-10.9-intel/egg/setuptools/command/easy_install.py", line 1005, in run_setup
distutils.errors.DistutilsError: Setup script exited with error: command 'cc' failed with exit status 1
Complete output from command python setup.py egg_info:
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 = klass(attrs)
File "build/bdist.macosx-10.9-intel/egg/setuptools/dist.py", line 239, in __init__
File "build/bdist.macosx-10.9-intel/egg/setuptools/dist.py", line 264, in fetch_build_eggs
File "build/bdist.macosx-10.9-intel/egg/pkg_resources.py", line 620, in resolve
dist = best[req.key] = env.best_match(req, ws, installer)
File "build/bdist.macosx-10.9-intel/egg/pkg_resources.py", line 858, in best_match
return self.obtain(req, installer) # try and download/install
File "build/bdist.macosx-10.9-intel/egg/pkg_resources.py", line 870, in obtain
return installer(requirement)
File "build/bdist.macosx-10.9-intel/egg/setuptools/dist.py", line 314, in fetch_build_egg
File "build/bdist.macosx-10.9-intel/egg/setuptools/command/easy_install.py", line 593, in easy_install
File "build/bdist.macosx-10.9-intel/egg/setuptools/command/easy_install.py", line 623, in install_item
File "build/bdist.macosx-10.9-intel/egg/setuptools/command/easy_install.py", line 811, in install_eggs
File "build/bdist.macosx-10.9-intel/egg/setuptools/command/easy_install.py", line 1017, in build_and_install
File "build/bdist.macosx-10.9-intel/egg/setuptools/command/easy_install.py", line 1005, in run_setup
distutils.errors.DistutilsError: Setup script exited with error: command 'cc' failed with exit status 1
----------------------------------------
Command python setup.py egg_info failed with error code 1 in /Users/cody/virtualenvs/analytics/build/bcrypt
最佳答案
不使用 sudo 和 CFLAGS 和 CPPFLAGS(pip 不需要):
$ brew install pkg-config libffi
$ export PKG_CONFIG_PATH=/usr/local/Cellar/libffi/3.0.13/lib/pkgconfig/
$ pip install bcrypt
关于python - 在 OS X : can't find ffi. h 上使用 pip 安装 bcrypt 时出错(已安装 libffi)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22875270/
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