mac - pip install pymssql error

Question

I use Mac (OS X 10.11.5). I want to install module pymssql for python. In Terminal.app, I input sudo -H pip install pymssql, pip install pymssql, sudo pip install pymssql . But error occur.

The directory /Users/janghyunsoo/Library/Caches/pip/http or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.

The directory /Users/janghyunsoo/Library/Caches/pip or its parent directory is not owned by the current user and caching wheels has been disabled. Check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.

Collecting pymssql
  Downloading pymssql-2.1.2.tar.gz (898kB)
    100% |████████████████████████████████| 901kB 955kB/s 
Installing collected packages: pymssql
  Running setup.py install for pymssql ... error
    Complete output from command /Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python -u -c "import setuptools, tokenize;__file__='/private/tmp/pip-build-KA5ksi/pymssql/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-A3wRBy-record/install-record.txt --single-version-externally-managed --compile:
    setup.py: platform.system() => 'Darwin'
    setup.py: platform.architecture() => ('64bit', '')
    setup.py: platform.libc_ver() => ('', '')
    setup.py: Detected Darwin/Mac OS X.
        You can install FreeTDS with Homebrew or MacPorts, or by downloading
        and compiling it yourself.
    
        Homebrew (http://brew.sh/)
        --------------------------
        brew install freetds
    
        MacPorts (http://www.macports.org/)
        -----------------------------------
        sudo port install freetds
    
    setup.py: Not using bundled FreeTDS
    setup.py: include_dirs = ['/usr/local/include', '/opt/local/include', '/opt/local/include/freetds']
    setup.py: library_dirs = ['/usr/local/lib', '/opt/local/lib']
    running install
    running build
    running build_ext
    building '_mssql' extension
    creating build
    creating build/temp.macosx-10.6-intel-2.7
    /usr/bin/clang -fno-strict-aliasing -fno-common -dynamic -arch i386 -arch x86_64 -g -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/usr/local/include -I/opt/local/include -I/opt/local/include/freetds -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c _mssql.c -o build/temp.macosx-10.6-intel-2.7/_mssql.o -DMSDBLIB
    _mssql.c:18924:15: error: use of undeclared identifier 'DBVERSION_80'
        __pyx_r = DBVERSION_80;
                  ^
    1 error generated.
    error: command '/usr/bin/clang' failed with exit status 1
    
    ----------------------------------------
Command "/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python -u -c "import setuptools, tokenize;__file__='/private/tmp/pip-build-KA5ksi/pymssql/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-A3wRBy-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /private/tmp/pip-build-KA5ksi/pymssql/

Answer 1

The top voted solution did not work for me as brew did not link the older version of freetds on its own. I did this to solve the problem:

brew unlink freetds; 
brew install [email protected];
brew link --force [email protected]