[NumPy-Tickets] [NumPy] #2103: Binary incompatibility warning

[NumPy Trac]

#2103: Binary incompatibility warning
-------------------------------+--------------------------------------------
  Reporter:  fonnesbeck_chris  |       Owner:  somebody   
      Type:  defect            |      Status:  closed     
  Priority:  normal            |   Milestone:  Unscheduled
 Component:  Other             |     Version:  1.6.1      
Resolution:  invalid           |    Keywords:             
-------------------------------+--------------------------------------------

Old description:

> I have built numpy from the master branch source today (I make new builds
> every couple of weeks), and am seeing a new warning that I have not seen
> before:
>
> In [1]: import numpy
> /Library/Python/2.7/site-
> packages/numpy-1.7.0.dev_0c5f480_20120412-py2.7-macosx-10.7-x86_64.egg/numpy/random/__init__.py:91:
> RuntimeWarning: numpy.ndarray size changed, may indicate binary
> incompatibility
>   from mtrand import *
>
> I am using the same build script as I always do. I am on OS X 10.7.3, and
> am using the following env variables:
>
> export MACOSX_DEPLOYMENT_TARGET=10.7
> export CFLAGS="-arch x86_64"
> export ARCHFLAGS="-arch x86_64"
> export FFLAGS="-static -ff2c"
> export LDFLAGS="-Wall -undefined dynamic_lookup -bundle -arch x86_64"
> export PYTHONPATH="/Library/Python/2.7/site-packages/"
> export CC=gcc-4.2
> export CXX=g++-4.2
>
> Again, nothing has changed here since last I built the package, which did
> not have this message last time.

New description:

 I have built numpy from the master branch source today (I make new builds
 every couple of weeks), and am seeing a new warning that I have not seen
 before:
 {{{
 In [1]: import numpy
 /Library/Python/2.7/site-
 packages/numpy-1.7.0.dev_0c5f480_20120412-py2.7-macosx-10.7-x86_64.egg/numpy/random/__init__.py:91:
 RuntimeWarning: numpy.ndarray size changed, may indicate binary
 incompatibility
   from mtrand import *
 }}}
 I am using the same build script as I always do. I am on OS X 10.7.3, and
 am using the following env variables:

 export MACOSX_DEPLOYMENT_TARGET=10.7
 export CFLAGS="-arch x86_64"
 export ARCHFLAGS="-arch x86_64"
 export FFLAGS="-static -ff2c"
 export LDFLAGS="-Wall -undefined dynamic_lookup -bundle -arch x86_64"
 export PYTHONPATH="/Library/Python/2.7/site-packages/"
 export CC=gcc-4.2
 export CXX=g++-4.2

 Again, nothing has changed here since last I built the package, which did
 not have this message last time.

--

Comment(by rgommers):

 It's strange though that you get this warning when importing numpy itself.
 It should come from another package compiled against older numpy, that
 then sees a change in numpy.

-- 
Ticket URL: <http://projects.scipy.org/numpy/ticket/2103#comment:2>
NumPy <http://projects.scipy.org/numpy>
My example project