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我配置virtualenv使用燒瓶microframework和PostgreSQL數據庫蟒蛇開發的遺留web服務應用程序正常運行安裝PyGreSQL，這個應用程序中使用PyGreSQL 5.0.3作爲一個依賴與數據庫連接。如何使用VIRTUALENV在Mac OS塞拉利昂
我已經安裝了PostgreSQL 9.6.1，我安裝了它使用：
brew install postgresql
我已經安裝並使用Python 2.7
工作當我運行
pip install -r requirements.txt
我'm得到這個錯誤信息：
Running setup.py install for PyGreSQL ... error
Complete output from command /Users/user/Development/Projects/flask/ws/myenv/bin/python -u -c "import setuptools, tokenize;__file__='/private/var/folders/t1/x7lrbmyd3lq0k8ngknwg1zx00000gn/T/pip-build-KjQgiU/PyGreSQL/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /var/folders/t1/x7lrbmyd3lq0k8ngknwg1zx00000gn/T/pip-3lBp1N-record/install-record.txt --single-version-externally-managed --compile --install-headers /Users/user/Development/Projects/flask/ws/myenv/include/site/python2.7/PyGreSQL:
running install
running build
running build_py
creating build
creating build/lib.macosx-10.12-intel-2.7
copying pg.py -> build/lib.macosx-10.12-intel-2.7
copying pgdb.py -> build/lib.macosx-10.12-intel-2.7
running build_ext
building '_pg' extension
creating build/temp.macosx-10.12-intel-2.7
cc -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -arch i386 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -arch i386 -pipe -DPYGRESQL_VERSION=5.0.3 -DDIRECT_ACCESS -DLARGE_OBJECTS -DDEFAULT_VARS -DESCAPING_FUNCS -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -I/usr/local/Cellar/postgresql/9.6.1/include -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c pgmodule.c -o build/temp.macosx-10.12-intel-2.7/pgmodule.o -O2 -funsigned-char -Wall -Werror
pgmodule.c:4143:9: error: implicit conversion loses integer precision: 'long' to 'int' [-Werror,-Wshorten-64-to-32]
num = PyInt_AsLong(param);
~ ^~~~~~~~~~~~~~~~~~~
pgmodule.c:4448:12: error: implicit conversion loses integer precision: 'long' to 'int' [-Werror,-Wshorten-64-to-32]
pgport = PyInt_AsLong(pg_default_port);
~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2 errors generated.
error: command 'cc' failed with exit status 1
----------------------------------------
正如您所看到的，此錯誤源自編譯和構建軟件包，但我已安裝postgresql庫，在其他情況下我將其視爲常見問題。在另一方面，我已經安裝了Mac的命令行工具，我改變了我的編譯器cc到gcc，我有同樣的錯誤
不知道如何解決它，謝謝你提前