django - Can't install python mysql library on Mac Mavericks

Question

It was working like a charm before the update from Mountain Lion.

After the update it is broken and I cannot get the environment up again.

Does anybody know how to fix this?

The error is bolded, below.

fedorius@this:~$ pip install mysql-python
Downloading/unpacking mysql-python
  Downloading MySQL-python-1.2.5.zip (108kB): 108kB downloaded
  Running setup.py (path:/private/var/folders/21/zjvwzn891jnf4rnp526y13200000gn/T/pip_build_fedorius/mysql-python/setup.py) egg_info for package mysql-python

Installing collected packages: mysql-python
  Running setup.py install for mysql-python
    building '_mysql' extension
    cc -fno-strict-aliasing -fno-common -dynamic -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -mno-fused-madd -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -pipe -Dversion_info=(1,2,5,'final',1) -D__version__=1.2.5 -I/usr/local/mysql/include -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c _mysql.c -o build/temp.macosx-10.9-intel-2.7/_mysql.o -Os -g -fno-strict-aliasing -arch x86_64
    clang: error: unknown argument: '-mno-fused-madd' [-Wunused-command-line-argument-hard-error-in-future]
    clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
    error: command 'cc' failed with exit status 1
    Complete output from command /usr/bin/python -c "import setuptools, tokenize;__file__='/private/var/folders/21/zjvwzn891jnf4rnp526y13200000gn/T/pip_build_fedorius/mysql-python/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('
', '
'), __file__, 'exec'))" install --record /var/folders/21/zjvwzn891jnf4rnp526y13200000gn/T/pip-_yi6sy-record/install-record.txt --single-version-externally-managed --compile:
    running install

running build

running build_py

creating build

creating build/lib.macosx-10.9-intel-2.7

copying _mysql_exceptions.py -> build/lib.macosx-10.9-intel-2.7

creating build/lib.macosx-10.9-intel-2.7/MySQLdb

copying MySQLdb/__init__.py -> build/lib.macosx-10.9-intel-2.7/MySQLdb

copying MySQLdb/converters.py -> build/lib.macosx-10.9-intel-2.7/MySQLdb

copying MySQLdb/connections.py -> build/lib.macosx-10.9-intel-2.7/MySQLdb

copying MySQLdb/cursors.py -> build/lib.macosx-10.9-intel-2.7/MySQLdb

copying MySQLdb/release.py -> build/lib.macosx-10.9-intel-2.7/MySQLdb

copying MySQLdb/times.py -> build/lib.macosx-10.9-intel-2.7/MySQLdb

creating build/lib.macosx-10.9-intel-2.7/MySQLdb/constants

copying MySQLdb/constants/__init__.py -> build/lib.macosx-10.9-intel-2.7/MySQLdb/constants

copying MySQLdb/constants/CR.py -> build/lib.macosx-10.9-intel-2.7/MySQLdb/constants

copying MySQLdb/constants/FIELD_TYPE.py -> build/lib.macosx-10.9-intel-2.7/MySQLdb/constants

copying MySQLdb/constants/ER.py -> build/lib.macosx-10.9-intel-2.7/MySQLdb/constants

copying MySQLdb/constants/FLAG.py -> build/lib.macosx-10.9-intel-2.7/MySQLdb/constants

copying MySQLdb/constants/REFRESH.py -> build/lib.macosx-10.9-intel-2.7/MySQLdb/constants

copying MySQLdb/constants/CLIENT.py -> build/lib.macosx-10.9-intel-2.7/MySQLdb/constants

running build_ext

building '_mysql' extension

creating build/temp.macosx-10.9-intel-2.7

cc -fno-strict-aliasing -fno-common -dynamic -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -mno-fused-madd -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -pipe -Dversion_info=(1,2,5,'final',1) -D__version__=1.2.5 -I/usr/local/mysql/include -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c _mysql.c -o build/temp.macosx-10.9-intel-2.7/_mysql.o -Os -g -fno-strict-aliasing -arch x86_64

**clang: error: unknown argument: '-mno-fused-madd' [-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
error: command 'cc' failed with exit status 1**

----------------------------------------
Cleaning up...
Command /usr/bin/python -c "import setuptools, tokenize;__file__='/private/var/folders/21/zjvwzn891jnf4rnp526y13200000gn/T/pip_build_fedorius/mysql-python/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('
', '
'), __file__, 'exec'))" install --record /var/folders/21/zjvwzn891jnf4rnp526y13200000gn/T/pip-_yi6sy-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /private/var/folders/21/zjvwzn891jnf4rnp526y13200000gn/T/pip_build_fedorius/mysql-python
Storing debug log for failure in /var/folders/21/zjvwzn891jnf4rnp526y13200000gn/T/tmp5QBn55

UPDATE:

As suggested, I've added

export CFLAGS=-Qunused-arguments export CPPFLAGS=-Qunused-arguments

But it changed the error to

error: /Library/Python/2.7/site-packages/_mysql.so: Permission denied

I just chmoded this directory to allow writing and it worked :) This is due to mixing macports, easy_install and pip... shame on me.

Answer 1

The problem is due to changes introduced in Xcode 5.1 and due to the way the Apple-supplied system Python 2.7 is built. Try adding these environment variable values before running pip:

export CFLAGS=-Qunused-arguments
export CPPFLAGS=-Qunused-arguments

See clang error: unknown argument: '-mno-fused-madd' (python package installation failure) for more information.

UPDATE [2014-05-16]: As expected, Apple has fixed this problem with updated system Pythons (2.7, 2.6, and 2.5) in OS X 10.9.3 so the workaround is no longer necessary when using the latest Mavericks and Xcode 5.1+. However, as of now, the workaround is still required for OS X 10.8.x (Mountain Lion, currently 10.8.5) if you are using Xcode 5.1+ there.