Hello,

I am quite new to this list, but I am really interested in working with the
Ryu SDN controller. I have been through the tutorials and code and the
project seems exciting.

I have a question regarding the possibility to install Ryu on a Mac OSX
machine. Right now, I am running a Mac OSX 10.9.3 machine, with Python
2.7.5 and GCC 4.2.1. I am trying to install Ryu using the pip install
method.

As Ryu requires libxml2 and libxslt, I have installed and linked both
libraries using Homebrew, typing:

brew install --with-python libxml2

brew install --with-python libxslt

brew link libxml2 libxslt --force
I used the force option to make sure that both libraries are linked in the
brew version.

Then, when launching Ryu's installation, I get an error

In file included from src/lxml/lxml.etree.c:346:


/private/tmp/pip_build_root/lxml/src/lxml/includes/etree_defs.h:9:10: fatal
error: 'libxml/xmlversion.h' file not found


#include "libxml/xmlversion.h"

         ^

1 error generated.


error: command 'cc' failed with exit status 1

----------------------------------------

Cleaning up...

Command /usr/bin/python -c "import setuptools,
tokenize;__file__='/private/tmp/pip_build_root/lxml/setup.py';exec(compile(getattr(tokenize,
'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))"
install --record /tmp/pip-KPekqh-record/install-record.txt
--single-version-externally-managed --compile failed with error code 1 in
/private/tmp/pip_build_root/lxml

Has anyone experienced a similar error? Did you manage to install Ryu on an
OSX machine?

Thanks in advance for your help,

Antoine Fressancourt
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