[IPython-dev] Qt/Curses interfaces future: results of the weekend mini-sprint (or having fun with 0mq)

[Brian Granger]

Darren,

> This sounds really exciting. I am having some trouble installing pyzmq:

OK, let's get this figured out.  Should be simple.

> On Tue, Mar 23, 2010 at 5:01 PM, Fernando Perez <fperez.net at gmail.com> wrote:
>> git://github.com/sustrik/zeromq2.git
>>
>> then run
>>
>> ./autogen.sh
>> ./configure --prefix=your_favorite_installation_prefix
>> make
>> make install
>>
>> This should give you a fully working 0mq.
>
> I used --prefix=/usr/local
>
>> Then for the python
>> bindings, clone Brian's repo and get the kernel branch:
>>
>> git clone git://github.com/ellisonbg/pyzmq.git
>> cd pyzmq
>> git co -b kernel origin/kernel
>>
>> then
>>
>> cp setup.cfg.template setup.cfg
>>
>> and edit setup.cfg to indicate where you put your libraries.  This is
>> basically the prefix above with /lib and /include appended.
>
> [build_ext]
> # Edit these to point to your installed zeromq library and header dirs.
> library_dirs = /usr/local/lib
> include_dirs = /usr/local/include
>
> I checked that libzmq.so* exist in /usr/local/lib, same for zmq.* in
> /usr/local/include
>
>> Then you can do the usual
>>
>> python setup.py install --prefix=your_favorite_installation_prefix
>
> First I did "python setup.py build":
>
> running build
> running build_py
> creating build
> creating build/lib.linux-x86_64-2.6
> creating build/lib.linux-x86_64-2.6/zmq
> copying zmq/__init__.py -> build/lib.linux-x86_64-2.6/zmq
> running build_ext
> building 'zmq._zmq' extension
> creating build/temp.linux-x86_64-2.6
> creating build/temp.linux-x86_64-2.6/zmq
> gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall
> -Wstrict-prototypes -fPIC -I/usr/local/include
> -I/usr/include/python2.6 -c zmq/_zmq.c -o
> build/temp.linux-x86_64-2.6/zmq/_zmq.o
> gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions
> build/temp.linux-x86_64-2.6/zmq/_zmq.o -L/usr/local/lib -lzmq -o
> build/lib.linux-x86_64-2.6/zmq/_zmq.so
>
> Next I used "python setup.py install --user" (which is equivalent to
> "--prefix=~/.local"):
>
> running install
> running build
> running build_py
> running build_ext
> running install_lib
> copying build/lib.linux-x86_64-2.6/zmq/_zmq.so ->
> /home/darren/.local/lib/python2.6/site-packages/zmq
> running install_egg_info
> Removing /home/darren/.local/lib/python2.6/site-packages/pyzmq-0.1.egg-info
> Writing /home/darren/.local/lib/python2.6/site-packages/pyzmq-0.1.egg-info
>
>> The prototype we wrote lives in examples/kernel.  To play with it,
>> open 3 terminals:
>>
>> - T1: run kernel.py, just leave it there.
>
> Here is where I run into trouble:
>
> Traceback (most recent call last):
>  File "kernel.py", line 21, in <module>
>    import zmq
>  File "/home/darren/.local/lib/python2.6/site-packages/zmq/__init__.py",
> line 26, in <module>
>    from zmq import _zmq
> ImportError: libzmq.so.0: cannot open shared object file: No such file
> or directory

We link to libzmq.so dynamically so on Linux you have to set
LD_LIBRARY_PATH to point to /usr/local/lib.  Let me know if that
doesn't help.  I am also on #ipython right now.

Cheers,

Brian

-- 
Brian E. Granger, Ph.D.
Assistant Professor of Physics
Cal Poly State University, San Luis Obispo
bgranger at calpoly.edu
ellisonbg at gmail.com