title: Cannot import zmq in python (install issue)
body: <p>I can't seem to install pyzmq on my macbook (OSX 10.9.1)</p>
  
  <p>First call was to run:</p>
  
  <pre><code>sudo pip install pyzmq
  </code></pre>
  
  <p>There was an error that libzmq couldn't be found, and it appeared to try and compile the bundled version:</p>
  
  <pre><code>jono@air:~ $ sudo pip install pyzmq
  Password:
  Downloading/unpacking pyzmq
    Downloading pyzmq-14.0.1.tar.gz (867kB): 867kB downloaded
    Running setup.py egg_info for package pyzmq
  
      no previously-included directories found matching 'docs/build'
      no previously-included directories found matching 'docs/gh-pages'
      warning: no directories found matching 'bundled/uuid'
      warning: no previously-included files found matching 'bundled/uuid/Makefile*'
      warning: no previously-included files found matching 'bundled/zeromq/src/Makefile*'
      warning: no previously-included files found matching 'bundled/zeromq/src/platform.hpp'
      warning: no previously-included files found matching 'setup.cfg'
      warning: no previously-included files found matching 'zmq/libzmq*'
      warning: no previously-included files matching '__pycache__/*' found anywhere in distribution
      warning: no previously-included files matching '.deps/*' found anywhere in distribution
      warning: no previously-included files matching '*.so' found anywhere in distribution
      warning: no previously-included files matching '*.pyd' found anywhere in distribution
      warning: no previously-included files matching '.git*' found anywhere in distribution
      warning: no previously-included files matching '.DS_Store' found anywhere in distribution
      warning: no previously-included files matching '.mailmap' found anywhere in distribution
  Installing collected packages: pyzmq
    Running setup.py install for pyzmq
      Did not find libzmq via pkg-config:
      Package libzmq was not found in the pkg-config search path.
      Perhaps you should add the directory containing `libzmq.pc'
      to the PKG_CONFIG_PATH environment variable
      No package 'libzmq' found
  
      xcrun clang -fno-strict-aliasing -fno-common -dynamic -I/usr/local/include -I/usr/local/opt/sqlite/include -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -c build/temp.macosx-10.8-x86_64-2.7/scratch/check_sys_un.c -o build/temp.macosx-10.8-x86_64-2.7/scratch/check_sys_un.o
      xcrun clang -undefined dynamic_lookup build/temp.macosx-10.8-x86_64-2.7/scratch/check_sys_un.o -o build/temp.macosx-10.8-x86_64-2.7/scratch/check_sys_un
      Configure: Autodetecting ZMQ settings...
          Custom ZMQ dir:
      ************************************************
      xcrun clang -fno-strict-aliasing -fno-common -dynamic -I/usr/local/include -I/usr/local/opt/sqlite/include -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -Izmq/utils -Izmq/backend/cython -Izmq/devices -c build/temp.macosx-10.8-x86_64-2.7/scratch/vers.c -o build/temp.macosx-10.8-x86_64-2.7/scratch/vers.o
      build/temp.macosx-10.8-x86_64-2.7/scratch/vers.c:4:10: fatal error: 'zmq.h' file not found
      #include "zmq.h"
               ^
      1 error generated.
  
      error: command 'xcrun' failed with exit status 1
  
      Failed with default libzmq, trying again with /usr/local
      Configure: Autodetecting ZMQ settings...
          Custom ZMQ dir:       /usr/local
      ************************************************
      xcrun clang -fno-strict-aliasing -fno-common -dynamic -I/usr/local/include -I/usr/local/opt/sqlite/include -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/usr/local/include -Izmq/utils -Izmq/backend/cython -Izmq/devices -c build/temp.macosx-10.8-x86_64-2.7/scratch/vers.c -o build/temp.macosx-10.8-x86_64-2.7/scratch/vers.o
      build/temp.macosx-10.8-x86_64-2.7/scratch/vers.c:4:10: fatal error: 'zmq.h' file not found
      #include "zmq.h"
               ^
      1 error generated.
  
      error: command 'xcrun' failed with exit status 1
  
      Warning: Failed to build or run libzmq detection test.
  
      If you expected pyzmq to link against an installed libzmq, please check to make sure:
  
          * You have a C compiler installed
          * A development version of Python is installed (including headers)
          * A development version of ZMQ &gt;= 2.1.4 is installed (including headers)
          * If ZMQ is not in a default location, supply the argument --zmq=&lt;path&gt;
          * 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`
  
      If you expected to get a binary install (egg), we have those for
      current Pythons on OS X and Windows. These can be installed with
      easy_install, but PIP DOES NOT SUPPORT EGGS.
  
      You can skip all this detection/waiting nonsense if you know
      you want pyzmq to bundle libzmq as an extension by passing:
  
          `--zmq=bundled`
  
      I will now try to build libzmq as a Python extension
      unless you interrupt me (^C) in the next 10 seconds...
  
      ************************************************
   1...
      Using bundled libzmq
      already have bundled/zeromq
      attempting ./configure to generate platform.hpp
      Warning: failed to configure libzmq:
      /bin/sh: ./configure: No such file or directory
  
      staging platform.hpp from: buildutils/include_darwin
      ************************************************
      cc -c /tmp/crypto_box_keypairpmO9ft.c -o build/temp.macosx-10.8-x86_64-2.7/tmp/crypto_box_keypairpmO9ft.o
      /tmp/crypto_box_keypairpmO9ft.c:1:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
      main (int argc, char **argv) {
      ^~~~
      /tmp/crypto_box_keypairpmO9ft.c:2:5: warning: implicit declaration of function 'crypto_box_keypair' is invalid in C99 [-Wimplicit-function-declaration]
          crypto_box_keypair();
          ^
      2 warnings generated.
      cc build/temp.macosx-10.8-x86_64-2.7/tmp/crypto_box_keypairpmO9ft.o -lsodium -o build/temp.macosx-10.8-x86_64-2.7/a.out
      ld: library not found for -lsodium
      clang: error: linker command failed with exit code 1 (use -v to see invocation)
      Warning: libsodium not found, zmq.CURVE security will be unavailable
      ************************************************
      building 'zmq.libzmq' extension
      xcrun clang -fno-strict-aliasing -fno-common -dynamic -I/usr/local/include -I/usr/local/opt/sqlite/include -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -Ibundled/zeromq/include -Ibundled -I/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c buildutils/initlibzmq.c -o build/temp.macosx-10.8-x86_64-2.7/buildutils/initlibzmq.o
  ...
  ... (lots more compiling)
  ...
      xcrun clang -bundle -undefined dynamic_lookup -L/usr/local/lib -L/usr/local/opt/sqlite/lib -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk build/temp.macosx-10.8-x86_64-2.7/zmq/backend/cython/utils.o -o build/lib.macosx-10.8-x86_64-2.7/zmq/backend/cython/utils.so
  
      no previously-included directories found matching 'docs/build'
      no previously-included directories found matching 'docs/gh-pages'
      warning: no directories found matching 'bundled/uuid'
      warning: no previously-included files found matching 'bundled/uuid/Makefile*'
      warning: no previously-included files found matching 'bundled/zeromq/src/Makefile*'
      warning: no previously-included files found matching 'setup.cfg'
      warning: no previously-included files found matching 'zmq/libzmq*'
      warning: no previously-included files matching '__pycache__/*' found anywhere in distribution
      warning: no previously-included files matching '.deps/*' found anywhere in distribution
      warning: no previously-included files matching '*.so' found anywhere in distribution
      warning: no previously-included files matching '*.pyd' found anywhere in distribution
      warning: no previously-included files matching '.git*' found anywhere in distribution
      warning: no previously-included files matching '.DS_Store' found anywhere in distribution
      warning: no previously-included files matching '.mailmap' found anywhere in distribution
  Successfully installed pyzmq
  Cleaning up...
  </code></pre>
  
  <p>This didn't work:</p>
  
  <pre><code>jono@air:~ $ python
  Python 2.7.3 (default, Mar 15 2013, 22:53:11) 
  [GCC 4.2.1 Compatible Apple LLVM 4.2 (clang-425.0.27)] on darwin
  Type "help", "copyright", "credits" or "license" for more information.
  &gt;&gt;&gt; import zmq
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
    File "/usr/local/lib/python2.7/site-packages/zmq/__init__.py", line 35, in &lt;module&gt;
      _libzmq = ctypes.CDLL(bundled[0], mode=ctypes.RTLD_GLOBAL)
    File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ctypes/__init__.py", line 365, in __init__
      self._handle = _dlopen(self._name, mode)
  OSError: dlopen(/usr/local/lib/python2.7/site-packages/zmq/libzmq.so, 10): Symbol not found: __ZNSiD0Ev
    Referenced from: /usr/local/lib/python2.7/site-packages/zmq/libzmq.so
    Expected in: flat namespace
   in /usr/local/lib/python2.7/site-packages/zmq/libzmq.so
  &gt;&gt;&gt; 
  </code></pre>
  
  <p>So I interpreted the errors in the install process as not having libzmq. Following the instructions at <a href="https://github.com/zeromq/pyzmq/wiki/Building-and-Installing-PyZMQ" rel="noreferrer">https://github.com/zeromq/pyzmq/wiki/Building-and-Installing-PyZMQ</a>, I uninstalled it, and tried:</p>
  
  <pre><code>jono@air:~ $ brew install zeromq
  ==&gt; Downloading http://download.zeromq.org/zeromq-3.2.3.tar.gz
  ######################################################################## 100.0%
  ==&gt; Patching
  patching file tests/test_disconnect_inproc.cpp
  ==&gt; ./configure --prefix=/usr/local/Cellar/zeromq/3.2.3
  ==&gt; make
  ==&gt; make install
  ==&gt; Caveats
  To install the zmq gem on 10.6 with the system Ruby on a 64-bit machine,
  you may need to do:
  
      ARCHFLAGS="-arch x86_64" gem install zmq -- --with-zmq-dir=/usr/local/opt/zeromq
  ==&gt; Summary
    /usr/local/Cellar/zeromq/3.2.3: 54 files, 2.4M, built in 52 seconds
  </code></pre>
  
  <p>Followed by:</p>
  
  <pre><code>jono@air:~ $ sudo pip install pyzmq
  Password:
  Downloading/unpacking pyzmq
    Running setup.py egg_info for package pyzmq
  
      no previously-included directories found matching 'docs/build'
      no previously-included directories found matching 'docs/gh-pages'
      warning: no directories found matching 'bundled/uuid'
      warning: no previously-included files found matching 'bundled/uuid/Makefile*'
      warning: no previously-included files found matching 'bundled/zeromq/src/Makefile*'
      warning: no previously-included files found matching 'setup.cfg'
      warning: no previously-included files found matching 'zmq/libzmq*'
      warning: no previously-included files matching '__pycache__/*' found anywhere in distribution
      warning: no previously-included files matching '.deps/*' found anywhere in distribution
      warning: no previously-included files matching '*.so' found anywhere in distribution
      warning: no previously-included files matching '*.pyd' found anywhere in distribution
      warning: no previously-included files matching '.git*' found anywhere in distribution
      warning: no previously-included files matching '.DS_Store' found anywhere in distribution
      warning: no previously-included files matching '.mailmap' found anywhere in distribution
  Installing collected packages: pyzmq
    Running setup.py install for pyzmq
      Using bundled libzmq
      already have bundled/zeromq
      already have platform.hpp
      ************************************************
      cc -c /tmp/crypto_box_keypairLbTEQR.c -o build/temp.macosx-10.8-x86_64-2.7/tmp/crypto_box_keypairLbTEQR.o
      /tmp/crypto_box_keypairLbTEQR.c:1:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
      main (int argc, char **argv) {
      ^~~~
      /tmp/crypto_box_keypairLbTEQR.c:2:5: warning: implicit declaration of function 'crypto_box_keypair' is invalid in C99 [-Wimplicit-function-declaration]
          crypto_box_keypair();
          ^
      2 warnings generated.
      cc build/temp.macosx-10.8-x86_64-2.7/tmp/crypto_box_keypairLbTEQR.o -lsodium -o build/temp.macosx-10.8-x86_64-2.7/a.out
      ld: library not found for -lsodium
      clang: error: linker command failed with exit code 1 (use -v to see invocation)
      Warning: libsodium not found, zmq.CURVE security will be unavailable
      ************************************************
  
      no previously-included directories found matching 'docs/build'
      no previously-included directories found matching 'docs/gh-pages'
      warning: no directories found matching 'bundled/uuid'
      warning: no previously-included files found matching 'bundled/uuid/Makefile*'
      warning: no previously-included files found matching 'bundled/zeromq/src/Makefile*'
      warning: no previously-included files found matching 'setup.cfg'
      warning: no previously-included files found matching 'zmq/libzmq*'
      warning: no previously-included files matching '__pycache__/*' found anywhere in distribution
      warning: no previously-included files matching '.deps/*' found anywhere in distribution
      warning: no previously-included files matching '*.so' found anywhere in distribution
      warning: no previously-included files matching '*.pyd' found anywhere in distribution
      warning: no previously-included files matching '.git*' found anywhere in distribution
      warning: no previously-included files matching '.DS_Store' found anywhere in distribution
      warning: no previously-included files matching '.mailmap' found anywhere in distribution
  Successfully installed pyzmq
  Cleaning up...
  </code></pre>
  
  <p>I keep getting the error:</p>
  
  <pre><code>&gt;&gt;&gt; import zmq
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
    File "/usr/local/lib/python2.7/site-packages/zmq/__init__.py", line 35, in &lt;module&gt;
      _libzmq = ctypes.CDLL(bundled[0], mode=ctypes.RTLD_GLOBAL)
    File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ctypes/__init__.py", line 365, in __init__
      self._handle = _dlopen(self._name, mode)
  OSError: dlopen(/usr/local/lib/python2.7/site-packages/zmq/libzmq.so, 10): Symbol not found: __ZNSiD0Ev
    Referenced from: /usr/local/lib/python2.7/site-packages/zmq/libzmq.so
    Expected in: flat namespace
   in /usr/local/lib/python2.7/site-packages/zmq/libzmq.so
  </code></pre>
  
  <p>Regardless of what I do.</p>