Re: [Visualpython-users] VPython 6.02 with buttons, sliders, and new event handling capabilities

[Steve S. <st...@sp...>]

Hi Dan,

When you built boost did you use the bootstrap/b2 parameters suggest in MAC-OSX.txt or some variation?

I think __ZN5boost6python7objects15function_objectERKNS1_11py_functionERKSt4pairIPKNS0_6detail7keywordES9_E is a c++ mangled name for some specific method, but it's not included in your library somehow. 

-steve

On Feb 13, 2013, at 6:18 AM, "boy...@gm..." <boy...@gm...> wrote:

> Hello Steve, Tom,
> 
> find /usr/local/lib -name *boost_python* -ls reveals that there is a .dylib and .a versions, symlinked to /usr/local/lib,
> 
> /usr/local/lib/libboost_python-mt.a -> ../Cellar/boost/1.52.0/lib/libboost_python-mt.a
> /usr/local/lib/libboost_python-mt.dylib -> ../Cellar/boost/1.52.0/lib/libboost_python-mt.dylib
> 
> So Tom suggestion was right, the libraries have a "-mt" appended.
> 
> I changed line 135 of setup.py to read,
> 
> libraries = ['boost_python-mt','boost_signals-mt'] 
> 
> I re-built. This time the build finishes successfully, but there is error when import visual in python:
> 
> ----------------------------------
>  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/VPython-6.02-py2.7-macosx-10.8-x86_64.egg/visual/__init__.py", line 33, in <module>
>    from visual.visual_all import * # this statement not included in vis/__init__.py
>  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/VPython-6.02-py2.7-macosx-10.8-x86_64.egg/visual/visual_all.py", line 10, in <module>
>    from visual_common.cvisual import vector
> ImportError: dlopen(/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/VPython-6.02-py2.7-macosx-10.8-x86_64.egg/visual_common/cvisual.so, 2): Symbol not found: __ZN5boost6python7objects15function_objectERKNS1_11py_functionERKSt4pairIPKNS0_6detail7keywordES9_E
>  Referenced from: /usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/VPython-6.02-py2.7-macosx-10.8-x86_64.egg/visual_common/cvisual.so
>  Expected in: flat namespace
> in /usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/VPython-6.02-py2.7-macosx-10.8-x86_64.egg/visual_common/cvisual.so
> ---------------------------------
> 
> I think the function named "__ZN5boost6python7objects15function_objectERKNS1_11py_functionERKSt4pairIPKNS0_6detail7keywordES9_E" is a hint that headers didn't get processed or some obscure problem with building against a dynamic library (the .dylib) files.
> 
> Any suggestions? 
> 
> The includes directory has the following structure,
> 
> /usr/local/include/boost/<all boost files and folders>
> 
> Should I specify the boost subdirectory as,
> 
> [build_ext]
> include-dirs=/usr/local/include/boost <---- ?
> library-dirs=/usr/local/lib
> 
> Should I only link against the static library (is that what the .a files are?). If so, how to do that?
> 
> Best wishes,
> 
> Dan
> 
> PS. I should probably say, this is a fresh install of 10.8.2, with a latest Xcode (4.6), and latest homebrew (0.9.4, completely up-to-date).
>