我正在Mac OS X 10.10上通过brew安装pip和python的情况下，尝试安装cffi，以进行加密和加密。我已经安装了更新的命令行工具，并更新了xcode。
libffi-3.0.13已安装。
$ pkg-config --version
0.28
$ gcc --version
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)
Target: x86_64-apple-darwin14.3.0
Thread model: posix
$ python --version
Python 2.7.9
$ which pip
/usr/local/bin/pip
$ which python
/usr/local/bin/python
$ pip install cffi --verbose
Collecting cffi
Getting page https://pypi.python.org/simple/cffi/
Starting new HTTPS connection (1): pypi.python.org
"GET /simple/cffi/ HTTP/1.1" 200 3174
1 location(s) to search for versions of cffi:
* https://pypi.python.org/simple/cffi/
Getting page https://pypi.python.org/simple/cffi/
Analyzing links from page https://pypi.python.org/simple/cffi/
Skipping https://pypi.python.org/packages/2.6/c/cffi/cffi-0.9.0-cp26-none-win32.whl#md5=5448f38557332caf445f2b1b3d96493c (from https://pypi.python.org/simple/cffi/) because it is not compatible with this Python
Skipping https://pypi.python.org/packages/2.6/c/cffi/cffi-0.9.0-cp26-none-win_amd64.whl#md5=9f94745d46800c8bba07d12daca1ba1f (from https://pypi.python.org/simple/cffi/) because it is not compatible with this Python
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Skipping https://pypi.python.org/packages/cp26/c/cffi/cffi-0.8.4-cp26-none-win32.whl#md5=efb3fc7a94ea39f56edcab1ec3571f8e (from https://pypi.python.org/simple/cffi/) because it is not compatible with this Python
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Skipping https://pypi.python.org/packages/cp27/c/cffi/cffi-0.8.3-cp27-none-win32.whl#md5=0ba0b969d6ef7d29dbd8dfa70db424e2 (from https://pypi.python.org/simple/cffi/) because it is not compatible with this Python
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Skipping https://pypi.python.org/packages/cp27/c/cffi/cffi-0.9.2-cp27-none-win32.whl#md5=dd217315101bfde6a47b60c2b1ca0aeb (from https://pypi.python.org/simple/cffi/) because it is not compatible with this Python
Skipping https://pypi.python.org/packages/cp27/c/cffi/cffi-0.9.2-cp27-none-win_amd64.whl#md5=ade003e9f5217cc6b4df244a6f45eb41 (from https://pypi.python.org/simple/cffi/) because it is not compatible with this Python
Skipping https://pypi.python.org/packages/cp32/c/cffi/cffi-0.8.1-cp32-none-win32.whl#md5=186fc3ae218025ec1ef506231cf55d0b (from https://pypi.python.org/simple/cffi/) because it is not compatible with this Python
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Skipping https://pypi.python.org/packages/cp32/c/cffi/cffi-0.8.6-cp32-none-win_amd64.whl#md5=12411f18fff42d3beff45abc03681c45 (from https://pypi.python.org/simple/cffi/) because it is not compatible with this Python
Skipping https://pypi.python.org/packages/cp32/c/cffi/cffi-0.9.1-cp32-none-win32.whl#md5=b002b9f3d3294898f9df04a137f1ac2f (from https://pypi.python.org/simple/cffi/) because it is not compatible with this Python
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Skipping https://pypi.python.org/packages/cp34/c/cffi/cffi-0.9.1-cp34-none-win32.whl#md5=de9dfdc05ee4902ad1bd260832ac0f31 (from https://pypi.python.org/simple/cffi/) because it is not compatible with this Python
Skipping https://pypi.python.org/packages/cp34/c/cffi/cffi-0.9.1-cp34-none-win_amd64.whl#md5=c298a0118f2b484dba8286305c877df2 (from https://pypi.python.org/simple/cffi/) because it is not compatible with this Python
Skipping https://pypi.python.org/packages/cp34/c/cffi/cffi-0.9.2-cp34-none-win32.whl#md5=0f85ed6cd72145581fa3f824c889cc03 (from https://pypi.python.org/simple/cffi/) because it is not compatible with this Python
Skipping https://pypi.python.org/packages/cp34/c/cffi/cffi-0.9.2-cp34-none-win_amd64.whl#md5=7977bceee7c76f5379f0e7111ce776af (from https://pypi.python.org/simple/cffi/) because it is not compatible with this Python
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.1.tar.gz#md5=d78ad460f708ddd1f550fd65fd0803e1 (from https://pypi.python.org/simple/cffi/), version: 0.1
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.2.1.tar.gz#md5=32dd211d55f6891a575cf2b5471768fd (from https://pypi.python.org/simple/cffi/), version: 0.2.1
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.2.tar.gz#md5=768f1214dbaf8839d120e8dfd658aa88 (from https://pypi.python.org/simple/cffi/), version: 0.2
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.3.tar.gz#md5=25dbc7b6182c64d08adeb6077bfa2743 (from https://pypi.python.org/simple/cffi/), version: 0.3
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.4.1.tar.gz#md5=e2b929397207d3ec7d88786dda7da474 (from https://pypi.python.org/simple/cffi/), version: 0.4.1
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.4.2.tar.gz#md5=c2a35af157006e966c67d1a725e7875e (from https://pypi.python.org/simple/cffi/), version: 0.4.2
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.4.tar.gz#md5=4d5cee77fcb328ece71d794dcc38b5a9 (from https://pypi.python.org/simple/cffi/), version: 0.4
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.5.tar.gz#md5=b163c11f68cad4371e8caeb91d81743f (from https://pypi.python.org/simple/cffi/), version: 0.5
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.6.tar.gz#md5=5be33b1ab0247a984d42b27344519337 (from https://pypi.python.org/simple/cffi/), version: 0.6
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.7.1.tar.gz#md5=dcfbb32d9a757d515801463602e4c533 (from https://pypi.python.org/simple/cffi/), version: 0.7.1
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.7.2.tar.gz#md5=d329f5cb2053fd31dafc02e2c9ef0299 (from https://pypi.python.org/simple/cffi/), version: 0.7.2
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.7.tar.gz#md5=2110516c65f7c9e6f324241c322178c8 (from https://pypi.python.org/simple/cffi/), version: 0.7
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.8.1.tar.gz#md5=1a877bf113bfe90fdefedbf9e39310d2 (from https://pypi.python.org/simple/cffi/), version: 0.8.1
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.8.2.tar.gz#md5=37fc88c62f40d04e8a18192433f951ec (from https://pypi.python.org/simple/cffi/), version: 0.8.2
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.8.3.tar.gz#md5=57e140a7d475f58bada8f2ada3f5749e (from https://pypi.python.org/simple/cffi/), version: 0.8.3
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.8.4.tar.gz#md5=148894125d3fa696b418dc6559818f7a (from https://pypi.python.org/simple/cffi/), version: 0.8.4
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.8.5.tar.gz#md5=964981f3fada08abbe9a6f8948f3a4c3 (from https://pypi.python.org/simple/cffi/), version: 0.8.5
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.8.6.tar.gz#md5=474b5a68299a6f05009171de1dc91be6 (from https://pypi.python.org/simple/cffi/), version: 0.8.6
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.8.tar.gz#md5=e61deb0515311bb42d5d58b9403bc923 (from https://pypi.python.org/simple/cffi/), version: 0.8
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.9.0.tar.gz#md5=3a2f6b9f16e8082271aed6dcac51a71a (from https://pypi.python.org/simple/cffi/), version: 0.9.0
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.9.1.tar.gz#md5=8dbdf23c600845b75654024e434601ce (from https://pypi.python.org/simple/cffi/), version: 0.9.1
Found link https://pypi.python.org/packages/source/c/cffi/cffi-0.9.2.tar.gz#md5=b1bf4625ae07a8a932f2f1a2eb200c54 (from https://pypi.python.org/simple/cffi/), version: 0.9.2
Using version 0.9.2 (newest of versions: 0.9.2, 0.9.1, 0.9.0, 0.8.6, 0.8.5, 0.8.4, 0.8.3, 0.8.2, 0.8.1, 0.8, 0.7.2, 0.7.1, 0.7, 0.6, 0.5, 0.4.2, 0.4.1, 0.4, 0.3, 0.2.1, 0.2, 0.1)
Using cached cffi-0.9.2.tar.gz
Downloading from URL https://pypi.python.org/packages/source/c/cffi/cffi-0.9.2.tar.gz#md5=b1bf4625ae07a8a932f2f1a2eb200c54 (from https://pypi.python.org/simple/cffi/)
Running setup.py (path:/private/var/folders/rm/jkk12jm578jggsh636bnq0j00000gn/T/pip-build-g6JKEf/cffi/setup.py) egg_info for package cffi
Running command python setup.py egg_info
Complete output from command python setup.py egg_info:
<built-in>:0: error: Unknown value ‘10.10’ of -mmacosx-version-min
_configtest.c:1: error: thread-local storage not supported for this target
<built-in>:0: error: Unknown value ‘10.10’ of -mmacosx-version-min
No working compiler found, or bogus compiler options
passed to the compiler from Python's distutils module.
See the error messages above.
(If they are about -mno-fused-madd and you are on OS/X 10.8,
see http://stackoverflow.com/questions/22313407/ .)
----------------------------------------
Cleaning up...
Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/rm/jkk12jm578jggsh636bnq0j00000gn/T/pip-build-g6JKEf/cffi
Exception information:
Traceback (most recent call last):
File "/usr/local/lib/python2.7/site-packages/pip/basecommand.py", line 246, in main
status = self.run(options, args)
File "/usr/local/lib/python2.7/site-packages/pip/commands/install.py", line 342, in run
requirement_set.prepare_files(finder)
File "/usr/local/lib/python2.7/site-packages/pip/req/req_set.py", line 345, in prepare_files
functools.partial(self._prepare_file, finder))
File "/usr/local/lib/python2.7/site-packages/pip/req/req_set.py", line 290, in _walk_req_to_install
more_reqs = handler(req_to_install)
File "/usr/local/lib/python2.7/site-packages/pip/req/req_set.py", line 502, in _prepare_file
abstract_dist.prep_for_dist()
File "/usr/local/lib/python2.7/site-packages/pip/req/req_set.py", line 123, in prep_for_dist
self.req_to_install.run_egg_info()
File "/usr/local/lib/python2.7/site-packages/pip/req/req_install.py", line 411, in run_egg_info
command_desc='python setup.py egg_info')
File "/usr/local/lib/python2.7/site-packages/pip/utils/__init__.py", line 733, in call_subprocess
% (command_desc, proc.returncode, cwd))
InstallationError: Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/rm/jkk12jm578jggsh636bnq0j00000gn/T/pip-build-g6JKEf/cffi
我尝试重新链接gcc，但是没有运气。我尝试了以下标志：
env DYLD_LIBRARY_PATH=/usr/local/opt/openssl/lib/ ARCHFLAGS="-arch x86_64 -Wno-error=unused-command-line-argument-hard-error-in-future" LDFLAGS="-L/usr/local/opt/openssl/lib" CFLAGS="-I/usr/local/opt/openssl/include" pip install cffi
通过设置CC并使用clang而不是gcc进行了修复：
$ export CC=/usr/bin/clang;
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我来说两句