安装pyopenssl时遇到cffi.ffiplatform.VerificationError

我正在使用Ubuntu 14.04.我试图在我的机器上安装pyopenssl.但是这个信息总是失败.我在谷歌搜索它但没有找到任何解决方案:

gcc -pthread -shared /tmp/pip_build_pi314/cryptography/cryptography/hazmat/bindings/__pycache__/cryptography/hazmat/bindings/__pycache__/_Cryptography_cffi_79a5b0a3x3a8a382.o -L/home/pi314/anaconda/lib -lcrypto -lssl -lpython2.7 -o /tmp/pip_build_pi314/cryptography/cryptography/hazmat/bindings/__pycache__/_Cryptography_cffi_79a5b0a3x3a8a382.so

Traceback (most recent call last):

File "/tmp/pip_build_pi314/cryptography/setup.py", line 88, in finalize_options

self.distribution.ext_modules = get_ext_modules()

File "/tmp/pip_build_pi314/cryptography/setup.py", line 68, in get_ext_modules

OpenSSLBinding().ffi.verifier.get_extension(),

File "cryptography/hazmat/bindings/openssl/binding.py", line 89, in __init__

self._ensure_ffi_initialized()

File "cryptography/hazmat/bindings/openssl/binding.py", line 109, in _ensure_ffi_initialized

libraries=libraries,

File "cryptography/hazmat/bindings/utils.py", line 80, in build_ffi

extra_link_args=extra_link_args,

File "/tmp/pip_build_pi314/cryptography/cffi-0.8.6-py2.7-linux-x86_64.egg/cffi/api.py", line 340, in verify

lib = self.verifier.load_library()

File "/tmp/pip_build_pi314/cryptography/cffi-0.8.6-py2.7-linux-x86_64.egg/cffi/verifier.py", line 75, in load_library

return self._load_library()

File "/tmp/pip_build_pi314/cryptography/cffi-0.8.6-py2.7-linux-x86_64.egg/cffi/verifier.py", line 151, in _load_library

return self._vengine.load_library()

File "/tmp/pip_build_pi314/cryptography/cffi-0.8.6-py2.7-linux-x86_64.egg/cffi/vengine_cpy.py", line 149, in load_library

raise ffiplatform.VerificationError(error)

cffi.ffiplatform.VerificationError: importing '/tmp/pip_build_pi314/cryptography/cryptography/hazmat/bindings/__pycache__/_Cryptography_cffi_79a5b0a3x3a8a382.so': /tmp/pip_build_pi314/cryptography/cryptography/hazmat/bindings/__pycache__/_Cryptography_cff i_79a5b0a3x3a8a382.so: undefined symbol: EC_GFp_nistp224_method

Phalgun.. 5

由于您使用的是Ubuntu,因此需要安装libssl-dev

sudo apt-get install libssl-dev

你还需要libffi-devel和python-dev

sudo apt-get install libffi-dev python-dev