mac - pip install pymssql error

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/

I was able to work around this by reverting to an older version of FreeTDS through Homebrew before running the pip install.

brew unlink freetds; brew install homebrew/versions/freetds091

The solution was found by andrewmwhite at: https://github.com/pymssql/pymssql/issues/432

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 freetds@0.91;
brew link --force freetds@0.91

Himanshu dua

Found Detailed and simple answer with step by step installation of pymssql on http://gree2.github.io/python/setup/2017/04/19/python-instal-pymssql-on-mac.

brew unlink freetds; brew install homebrew/core/freetds091
brew link --force freetds@0.91
pip install pymssql

"brew install homebrew/python/pymssql" also worked but will install older 2.1.1 as of today.

Found a solution for pip/python2 & pip3/python3

Problem:

I was Unable to get a successful build from pip3 following @siva & @himanshu workaround works for python2 but not for python3.

pip3 install pymssql

    ..._mssql.c:21155:15: error: use of undeclared identifier 'DBVERSION_80'
        __pyx_r = DBVERSION_80;
                  ^
    1 error generated.
    error: command 'clang' failed with exit status 1

Your issue is not a permission issue, but, a code-compiling issue with dependent code for pymssql.

Here's the discussion, Where I found the Solution on github.

It has been around for a while at this point, just placing here for visibility.

Just use the newest build of pymssql from gitub:

    pip3 install git+https://github.com/pymssql/pymssql

Also works for python2

    pip install git+https://github.com/pymssql/pymssql

    pip2 install git+https://github.com/pymssql/pymssql

I Tested on Mac OS X (10.13.6) & Homebrew (1.7.1-62-gddbefee) multiple times. The command works for both versions of freetds (0.91) or (1.00.94)

This worked for me on mac:

pip install cython

then

pip install git+https://github.com/pymssql/pymssql.git

来源：https://stackoverflow.com/questions/37771434/mac-pip-install-pymssql-error

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python

macos

python-2.7

pymssql