py27-scipy fails to build with -faltivec flag error

[martinzinkin@…]

py27-scipy fails to build on my Mac with the errors below - apparently complaining about an unsupported -faltivec compiler flag

I am on OS X Lion 10.7.2, Xcode 4.2 (both fully up to date), and I have just run selfupdate and have no outdated ports.

I have tried both gcc44 and gcc variants of py27-scipy with the same results.

​this old numpy issue looks similar, but I am afraid I am not sufficiently familiar with macports to make further progress.

:info:build compiling C sources
:info:build C compiler: /opt/local/bin/gcc-mp-4.4 -fno-strict-aliasing -fno-common -dynamic -pipe -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes
:info:build 
:info:build compile options: '-DNO_ATLAS_INFO=3 -I/Library/Python/2.7/site-packages/numpy-2.0.0.dev_e2af7b7_20110721-py2.7-macosx-10.7-x86_64.egg/numpy/core/include -I/opt/local/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c'
:info:build extra options: '-faltivec -I/System/Library/Frameworks/vecLib.framework/Headers'
:info:build gcc-mp-4.4: scipy/integrate/_odepackmodule.c
:info:build cc1: error: unrecognized command line option "-faltivec"
:info:build cc1: error: unrecognized command line option "-faltivec"
:info:build error: Command "/opt/local/bin/gcc-mp-4.4 -fno-strict-aliasing -fno-common -dynamic -pipe -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -DNO_ATLAS_INFO=3 -I/Library/Python/2.7/site-packages/numpy-2.0.0.dev_e2af7b7_20110721-py2.7-macosx-10.7-x86_64.egg/numpy/core/include -I/opt/local/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c scipy/integrate/_odepackmodule.c -o build/temp.macosx-10.7-x86_64-2.7/scipy/integrate/_odepackmodule.o -faltivec -I/System/Library/Frameworks/vecLib.framework/Headers" failed with exit status 1

[martinzinkin@…]

Log file

[martinzinkin@…]

Log file

[martinzinkin@…]

Log file

[ryandesign (Ryan Carsten Schmidt)]

AltiVec is of course a feature of PowerPC G4 and G5 processors; it seem silly that anyone is requesting AltiVec features when compiling on Intel processors.

[skymoo (Adam Mercer)]

I notice that in the log message there is reference to a numpy-2.0.0 development snapshot install in /Library/Python, this is clearly interfering with the build. I would advise removing this and trying the build again.

[martinzinkin@…]

Replying to ram@…:

I notice that in the log message there is reference to a numpy-2.0.0 development snapshot install in /Library/Python, this is clearly interfering with the build. I would advise removing this and trying the build again.

Excellent, that was it. Thanks very much.

[samaburden@…]

Replying to ram@…:

I have the same build error, but I can't find similar reference to old numpy development snapshot as the original post (see attached log file).

I've tried removing py27-numpy (& deps) and reinstalling, but receive the same error. Thoughts?

[skymoo (Adam Mercer)]

Look like it's using stuff from the system numpy:

:info:build building 'scipy.integrate._odepack' extension
:info:build compiling C sources
:info:build C compiler: /opt/local/bin/gcc-mp-4.4 -fno-strict-aliasing -fno-common -dynamic -pipe -O2 -fwrapv -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes
:info:build 
:info:build compile options: '-DNO_ATLAS_INFO=3 -I/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/numpy/core/include -I/opt/local/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c'
:info:build extra options: '-faltivec -I/System/Library/Frameworks/vecLib.framework/Headers'
:info:build gcc-mp-4.4: scipy/integrate/_odepackmodule.c
:info:build cc1: error: unrecognized command line option "-faltivec"
:info:build cc1: error: unrecognized command line option "-faltivec"

I imagine you're getting this error because the system numpy is being used instead of the MacPorts version. Not sure why this is the case though. I'll do a little digging and see if I can find anything...

[samaburden@…]

Replying to ram@…:

Look like it's using stuff from the system numpy:

I imagine you're getting this error because the system numpy is being used instead of the MacPorts version. Not sure why this is the case though. I'll do a little digging and see if I can find anything...

Gotcha -- is there a way to prevent the system numpy from being found? I haven't added it to my PYTHONPATH . . .

Thanks!

[samaburden@…]

Replying to ram@…:

Look like it's using stuff from the system numpy:

You were absolutely right -- I hid /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python and py27-scipy installed successfully.

Thanks for the help!

[skymoo (Adam Mercer)]

Great, now got to figure out why it was picking up the system numpy and not the MacPorts version...

[samaburden@…]

Replying to ram@…:

Great, now got to figure out why it was picking up the system numpy and not the MacPorts version...

In case it's relevant: for some reason, the system's Python libraries show up before MacPorts' Python libraries in sys.path. I originally tried installing numpy & scipy without MacPorts, so maybe I tweaked my path along the way?

[calsaiwing@…]

Cc Me!

[calsaiwing@…]

(probably is expected) still happens with MacPorts 2.0.4.

[skymoo (Adam Mercer)]

This is only expected if you try and link against the system numpy, if you use the MacPorts version then it will build successfully. If you have modified sys.path then I imagine that will cause the problem.

[gwoptics@…]

Replying to samaburden@…:

Replying to ram@…:

I have the same build error, but I can't find similar reference to old numpy development snapshot as the original post (see attached log file).

I've tried removing py27-numpy (& deps) and reinstalling, but receive the same error. Thoughts?

Another possibility: a numpy version installed previously via easy_install-2.7 causes a `port install py27-scipy' to fail similarly (for me). After:

• sudo port install py27-pip
• sudo pip-2.7 uninstall numpy
• sudo port install py27-scipy

it worked. Maybe that helps.

[skymoo (Adam Mercer)]

Is this still a problem?