Pandas no longer builds on OS X after installing Xcode 5.1

[fonnesbeck]

After "upgrading" to Xcode 5.1, I can no longer build Pandas on OS X 10.9.2. I'm wondering if anyone has successfully done so. I get the following when running build_ext:

python setup.py build_ext --inplace
running build_ext
skipping 'pandas/index.c' Cython extension (up-to-date)
building 'pandas.index' extension
creating build
creating build/temp.macosx-10.9-intel-2.7
creating build/temp.macosx-10.9-intel-2.7/pandas
creating build/temp.macosx-10.9-intel-2.7/pandas/src
creating build/temp.macosx-10.9-intel-2.7/pandas/src/datetime
cc -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -arch i386 -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 -arch x86_64 -arch i386 -pipe -Ipandas/src/klib -Ipandas/src -I/Library/Python/2.7/site-packages/numpy-1.9.0.dev_297f54b-py2.7-macosx-10.9-intel.egg/numpy/core/include -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c pandas/index.c -o build/temp.macosx-10.9-intel-2.7/pandas/index.o
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
make: *** [tseries] Error 1

After a little digging around, I noticed some folks got rid of some clang problems with export ARCHFLAGS="-Wno-error=unused-command-line-argument-hard-error-in-future", so I did that. I got a little further, but it still failed.

Any suggestions for a fix are most welcome!

[TomAugspurger]

setting theses flags:

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

was suggested in a thread for pillow. Maybe give those a shot. I'm not getting the failures on my Mac, and I don't know much in this area.

[fonnesbeck]

I think that did it, thanks. It was still failing because of a bad algos.c file that was generated the previous time, but was not removed by make clean. Manually removing it did the trick.

[jreback]

@TomAugspurger if you want to make a wiki entry on mac-isms...would be great (if you have time/inclination)

[cpcloud]

Should we also have make clean remove cythonized files? Currently it doesn't remove any C files since there are some that aren't generated, simple solution might be to just make all cython files output to a particular directory instead of wherever they're located.

[cpcloud]

I ran into this when doing some work with Float64Index

[jreback]

hmm....it should be removing all c-files (except the _clean_exclude ones)....is it not?

[cpcloud]

it uses find to do the cleaning there's no python setup.py clean ... i can do that

[jreback]

oh...ok....(and have make clean actually run python setup.py clean)? which knows about the excluded c files

[Buttonwood]

I come across the question when I‘m trying to install pandas on OSX10.9, and here is the error info:

when
"""
sudo pip install pandas
"""

error: command 'cc' failed with exit status 1

[TomAugspurger]

Ideally you shouldn't need to use sudo in the first place. You should look into using virtualenv

You may have more luck with conda. But if you want to use pip, you'll need to post a bit more of the error message.

[Buttonwood]

virtualenv works ! And many tanks!