命令：env CRYPTOGRAPHY_SUPPRESS_LINK_FLAGS=1 LDFLAGS="$(brew --prefix [email protected])/lib/libssl.a $(brew --prefix [email protected])/lib/libcrypto.a" CFLAGS="-I$(brew --prefix [email protected])/include" pip3 install cryptography
報錯：
Collecting cryptography
Using cached https://files.pythonhosted.org/packages/a3/5f/d5b7d21006e3c1a3919a3cc14e2a5ce1cee1c7ff635f09b31d91bdaff377/cryptography-2.6.tar.gz
Installing build dependencies ... done
Getting requirements to build wheel ... done
Preparing wheel metadata ... done
Collecting asn1crypto>=0.21.0 (from cryptography)
Using cached https://files.pythonhosted.org/packages/ea/cd/35485615f45f30a510576f1a56d1e0a7ad7bd8ab5ed7cdc600ef7cd06222/asn1crypto-0.24.0-py2.py3-none-any.whl
Collecting cffi!=1.11.3,>=1.8 (from cryptography)
Using cached https://files.pythonhosted.org/packages/6b/af/e39e89ecbfb676c6aa5855b1795bb207f4005187495c8d40e26b5fb51bfa/cffi-1.12.2-cp37-cp37m-macosx_10_9_x86_64.whl
Requirement already satisfied: six>=1.4.1 in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from cryptography) (1.11.0)
Requirement already satisfied: pycparser in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from cffi!=1.11.3,>=1.8->cryptography) (2.19)
Building wheels for collected packages: cryptography
Building wheel for cryptography (PEP 517) ... done
Running setup.py clean for cryptography
Failed to build cryptography
Could not build wheels for cryptography which use PEP 517 and cannot be installed directly
uj5u.com熱心網友回復：
Easy, try to run this:
pip install pep517
And then try to install again
python3 -m pip install cryptography
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