Thank you very much Robert,
I recently upgrade my Ubuntu 9.04 to 9.10 and because I have no problems
with my binary Sage Version 4.1, Release Date: 2009-07-09 installation I
thought I could stay with it, (last time I upgrade sage I had too many problems
with other spkg's I had working, which I need to rebuilt -process which took me
more time I am able to spend now- so I am a little affraid to make this new
upgrade, although I know it deserves the pain).
I have just tried the import zlib, within sage shell and got:
/usr/bin/python: /opt/sage/local/lib/libz.so.1: no version information
available (required by /usr/bin/python)
Traceback (most recent call last):
File "/usr/lib/command-not-found", line 8, in <module>
import CommandNotFound
ImportError: No module named CommandNotFound
so there must be a compatibility problem with my 4.1sage binary installation
and the upgrade to Ubuntu 9.10,
what would you recommend me in my circumstances.
Jorge
> From: rober...@math.washington.edu
> To: sage-support@googlegroups.com
> Subject: Re: [sage-support] Can't run Cython's hello world example
> Date: Thu, 19 Nov 2009 19:16:31 -0800
>
> On Nov 19, 2009, at 1:57 PM, Jorge E. ´Sanchez Sanchez wrote:
>
> > Hi dear sage-support group:
> >
> > I was working a Differential equations problem with few elements
> > in some regular 3D-mesh which needed not too much calculations but I
> > am upgrading it to a bigger system. Then I shall need to do some
> > calculations using cython, so my first task is to build the simplest
> > Hello world example to understand how to proceed with my
> > implementation.
> > But I think something is missing in my Cython installation or
> > perhaps I am doing something wrong, because I cannot accomplish to
> > build even this simplest cython example. I am using sage 4.1 in a
> > Karmic Ubuntu 9.10.
> >
> > In my first try I just follow the directions in the Cython's manual;
> > first save a file with just the line:
> >
> > print "hello world"
> >
> > as hello.pyx and then from the command line:
> >
> > python setup.py build_ext --inplace
> >
> > where the setup.py file is the same as in the manual.
> >
> > But I get the message:
> >
> > Traceback (most recent call last):
> > File "setup.py", line 3, in <module>
> > from Cython.Distutils import build_ext
> > ImportError: No module named Cython.Distutils
>
> That is because Cython is not installed into your system Python, but
> the Sage one. Try running
>
> sage -python setup.py build_ext --inplace
>
>
> > within sage:
> > sage -sh
>
> OK, this should be the same as running sage -python ...
>
> >
> > running build_ext
> > cythoning helloworld.pyx to helloworld.c
> > building 'helloworld' extension
> > gcc -fno-strict-aliasing -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-
> > prototypes -fPIC -I/opt/sage/local/include/python2.6 -c helloworld.c
> > -o build/temp.linux-x86_64-2.6/helloworld.o
> > gcc -pthread -shared build/temp.linux-x86_64-2.6/helloworld.o -o
> > helloworld.so
> >
> > it finally got built the file helloworld.c and compile and link them
> > until reach helloworld.so
> >
> > but when I try the next step:
> > import helloworld
> >
> > /usr/bin/python: /opt/sage/local/lib/libz.so.1: no version
> > information available (required by /usr/bin/python)
> > Traceback (most recent call last):
> > File "/usr/lib/command-not-found", line 8, in <module>
> > import CommandNotFound
> > ImportError: No module named CommandNotFound
>
> I have never heard of this error. Sounds like libz was somehow
> miscompiled. Did you get your sage as a binary, or build from source?
> What happens if you do "import zlib" directly?
>
>
> > My next try was following the directions in:
> > http://behnel.de/cython200910/talk.html
>
> [...]
>
> > it seems that I don't have the option --embed, to create an embedded
> > main() function.
>
> Sounds like you're using an old version of Sage (and Cython), the --
> embedd option was added this spring. In fact, if it looks like 4.1.1
> was the first to include this new feature.
>
> > If I ignore this and proceed:
> > cython hw.py
> > I get the hw.c and from here:
> >
> > gcc -fno-strict-aliasing -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-
> > prototypes -fPIC -I/opt/sage/local/include/python2.6 \
> > /opt/sage/local/lib/libpython2.6.a -o hw hw.c -lpthread -lm
> > -lutil -ldl
> >
> > (may be I exagerate a little with all the compilation parameters,
> > but I get a
> >
> > /usr/lib/gcc/x86_64-linux-gnu/4.4.1/../../../../lib/crt1.o: In
> > function `_start':
> > /build/buildd/eglibc-2.10.1/csu/../sysdeps/x86_64/elf/start.S:109:
> > undefined reference to `main'
> > /tmp/ccLFKVfV.o: In function `__Pyx_AddTraceback':
> > /home/george/hw.c:995: undefined reference to `PyString_FromString'
> >
> > ...
> > ...
> > a bunch of more similar complains and finally
> > /home/george/hw.c:612: undefined reference to `PyErr_SetObject'
> > collect2: ld returned 1 exit status
> >
> > so I need the embedded main(), could you tell me how I can proceed?
> > (I am sorry if I extended too much).
>
> To use the --embed option, you'll need to upgrade to a newer version
> of Sage. Then try the above and it may just work (if not, let us know).
>
> - Robert
>
> --
> To post to this group, send email to sage-support@googlegroups.com
> To unsubscribe from this group, send email to
> sage-support-unsubscr...@googlegroups.com
> For more options, visit this group at
> http://groups.google.com/group/sage-support
> URL: http://www.sagemath.org
_________________________________________________________________
Otto te muestra IE8
www.otto.com.mx
--
To post to this group, send email to sage-support@googlegroups.com
To unsubscribe from this group, send email to
sage-support-unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/sage-support
URL: http://www.sagemath.org
