[zeromq-dev] Building PyZmq on Mac

[MinRK]

I think to properly find the libzmq.dylib during the checks when libzmq is
not installed somewhere it will be found

On Thu, Apr 16, 2015 at 12:22 PM, Thomas Maslach <tom at altair.com> wrote:


>
> I’m attempting to build pyzmq where it’ll automatically put the zeromq
> libraries within in the pyzmq ‘zmq’ folder.
>
>
>
> I am using my own build of python located in my home dir.  It will move
> around.
>
>
>
> I first did the following:
>
>
>
> ../python27/python setup.py configure –zmq=../zeromq-4.0.4
>
> ../python27/python setup.py install
>
>
>
> This installs everything, but does not put libzmq.dylib into the zmq
> folder.  Running otools –L libzmq.dylib also gives the id of that dylib as
> the full path to zeromq-4.04 + libzmq.3.dylib.  (Sorry about any confusing
> terminology – my mac knowledge is slim).
>
That’s correct. When you do this, you are telling pyzmq where you have
*installed* libzmq. It should be loadable from that location, and pyzmq
shouldn’t touch it.


>
> After looking on line some and at the setup.py code, I tried the following:
>
>
>
> ../python27/python setup.py configure –zmq=../zeromq-4.0.4
>
> ../python27/python setup.py bdist
>
>
>
> It looks like bdist will make the bundle_libzmq_dylib property in setup.py
> return True, which will copy libzmq.dylib into pyzmq’s zmq folder and call
> install_name_tool to change the id of zmq.  This seems to work.  But, I
> then get the following error in the output.  It seems that it is trying to
> build in the build folder, which means libzmq isn’t up a level.
>
Does it work if you specify an absolute path? I haven’t spent any time
working on bdists other than the official ones I use, which always build
libzmq, rather than linking to an existing one. It’s possible some args or
flags should be different.


>
> Any idea of how I use setup.py to accomplish what I want?  I just want a
> pyzmq build with my zeromq linked into it, and the python folder can be
> located anywhere on disk (and not necessarily on my machine).  I believe I
> can manually go to all the *.so files and call install_name_tool to
> redirect to my libzmq.  But, that doesn’t seem like a clean solution.
>
There’s a great tool called delocate <https://pypi.python.org/pypi/delocate>
that automates exactly this install_name_tool process. It may be what you
are after.

-MinRK


>
> Any help would be greatly appreciated – I’ve struggled on this for quite a
> bit!
>
>
>
> Here is the output I got from running ../python27/python setup.py bdist
>
> ************************************************
>
> Configure: Autodetecting ZMQ settings...
>
>     Custom ZMQ dir:       ../zeromq-4.0.4
>
> gcc -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall
> -Wstrict-prototypes -I../zeromq-4.0.4/include -Izmq/utils
> -Izmq/backend/cython -Izmq/devices -c
> build/temp.macosx-10.4-x86_64-2.7/scratch/vers.c -o
> build/temp.macosx-10.4-x86_64-2.7/scratch/vers.o
>
> gcc -undefined dynamic_lookup
> build/temp.macosx-10.4-x86_64-2.7/scratch/vers.o -Lzmq -lzmq -o
> build/temp.macosx-10.4-x86_64-2.7/scratch/vers
>
> Error running version detection script:
>
>
>
> dyld: Library not loaded: @loader_path/../libzmq.dylib
>
>   Referenced from:
> /users/tom/software/ipython_mac/python/pyzmq-14.1.1/build/temp.macosx-10.4-x86_64-2.7/scratch/vers
>
>   Reason: image not found
>
>
>
>
>
> error: Error running version detection script:
>
>
>
> dyld: Library not loaded: @loader_path/../libzmq.dylib
>
>   Referenced from:
> /users/tom/software/ipython_mac/python/pyzmq-14.1.1/build/temp.macosx-10.4-x86_64-2.7/scratch/vers
>
>   Reason: image not found
>
>
>
>
>
> Fatal: Falling back on bundled libzmq, but setup.cfg has explicitly
> prohibited building the libzmq extension.
>
> hwbldmac-64-02 tom /users/tom/software/ipython_mac/python/pyzmq-14.1.1 240
> > otool -L ../zeromq-4.0.4/lib/libzmq.dylib
>
> ../zeromq-4.0.4/lib/libzmq.dylib:
>
>
> /users/tom/software/ipython_mac/python/zeromq-4.0.4/lib/libzmq.3.dylib
> (compatibility version 5.0.0, current version 5.0.0)
>
>                 /usr/lib/libSystem.B.dylib (compatibility version 1.0.0,
> current version 159.1.0)
>
>                 /usr/lib/libstdc++.6.dylib (compatibility version 7.0.0,
> current version 52.0.0)
>
>
>
>
>
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