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installationzeromq
Dave
Dave

Reputation: 9373

Errors from "easy_install zeromq"?

Apparently this is a known problem but I'm relatively new to installing stuff on Linux so I don't know what I'm supposed to do. Can someone help explain what I should do differently?

The problem:

When I run "easy_install zeromq" I get this error.

Error running version detection script:

detect/vers: error while loading shared libraries: libzmq.so.1: cannot open shared object file: No such file or directory

Fatal: 
    Failed to run ZMQ test program.  Please check to make sure:

    You have a C compiler installed
    A development version of Python is installed (including header files)
    A development version of ZMQ >= 2.1.4 is installed (including header files)
    If ZMQ is not in a default location, supply the argument --zmq=<path>
    If you did recently install ZMQ to a default location, 
      try rebuilding the ld cache with `sudo ldconfig`
      or specify zmq's location with `--zmq=/usr/local`

I found these links online:

http://lists.zeromq.org/pipermail/zeromq-dev/2010-November/007545.html

http://blog.boxedice.com/2010/05/23/building-zeromq-and-pyzmq-on-red-hat/

http://mail.scipy.org/pipermail/ipython-dev/2010-March/005900.html

What am I supposed to do? I've tried a bunch of stuff from those links but I don't think I'm doing it right.

Upvotes: 1

Views: 3454

Answers (3)

Lorenzo Bevilacqua
Lorenzo Bevilacqua

Reputation: 365

If you continue having problems, take a look at the output of the command

sudo /sbin/ldconfig -v | grep libzmq

If ldconfig did his job, you should see something like

libzmq.so.1 -> libzmq.so.1.0.1

If not, then maybe ldconfig doesn't scan /usr/local/lib, where libzmq is located. To make it scan /usr/local/lib too do the following, su edit /etc/ld.so.conf, add at the end of the file

/usr/local/lib

and save.

Then sudo /sbin/ldconfig -v | grep libzmq should rebuild the cache including zmq too.

Upvotes: 4

Asbj&#248;rn A. Fellinghaug
Asbj&#248;rn A. Fellinghaug

Reputation: 21

If you have a custom installation of ZeroMQ installed, you can give "pip" that information when trying to install the 'pyzmq' package.

I installed my ZeroMQ here: $HOME/.local/, so I ran the following pip command: pip install --install-option="--zmq=$HOME/.local" pyzmq

The "--install-option" forwards whatever you type in there to the "python setup.py install" command.

Upvotes: 0

Michael Dillon
Michael Dillon

Reputation: 32392

This recipe works for me:

cd ~
wget http://download.zeromq.org/zeromq-2.1.11.tar.gz
tar zxvf zeromq-2.1.11.tar.gz
cd zeromq-2.1.11
./configure --prefix=/usr
make
sudo make install

pip install pyzmq

Upvotes: 1

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