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Welcome
-------
Crossroads I/O ("libxs") is a library for building scalable and high
performance distributed applications. It fits between classic BSD sockets,
JMS/AMQP-style message queues, and enterprise message-oriented middleware.
Crossroads I/O extends the standard socket interfaces with features
traditionally provided by specialised messaging middleware products,
providing an abstraction of asynchronous message queues, multiple messaging
patterns, message filtering (subscriptions), seamless access to multiple
transport protocols, and more.
Crossroads I/O provides a native C API for applications. Support for many
more languages is provided by the community through language bindings which
can be found at the Crossroads website.
Building and Installation
-------------------------
The following instructions apply to building libxs from an official release
downloaded from the Crossroads I/O website. For building directly from Git,
refer to the `INSTALL` file included with the libxs distribution.
On POSIX platforms, libxs uses the standard autotools build system. To
build and install the library, ensure your system has a C++ compiler
installed, and proceed with the following steps:
1. Run `./configure`, then `make` to build the library.
2. Optionally, run `make check` to run the built in test suite.
3. Run `make install` as root.
4. On Linux or other platforms which use ld.so for dynamic linking, run
`ldconfig` or equivalent as root to update your systems shared library
cache.
On Windows, solution files for Visual C++ 2010 are provided in the
`builds/msvc/` subdirectory of the distribution.
Refer to the `INSTALL` file included with the libxs distribution for more
detailed installation instructions.
ZeroMQ Compatibility
--------------------
Crossroads I/O provides a drop-in 'libzmq' compatibility library for ZeroMQ
language bindings and applications. To enable 'libzmq' compatibility, you
must build your copy of libxs with the `--enable-libzmq` option to
configure, or on Windows by building the appropriate solution file.
For further details refer to the `doc/xs_zmq.html` or the 'xs_zmq(7)'
manual page included with this distribution.
NOTE: Enabling this option will *overwrite* any existing installation of
`libzmq` on your system.
Reporting Bugs
--------------
To report a bug, sign up to the Crossroads I/O development discussion group
at <http://groups.crossroads.io> and post a topic or send an email
describing your problem.
Prefix the subject of your post with `[BUG]` to catch the developers
attention.
To ensure that your report is dealt with promptly, please attach a minimal
test case reproducing the bug, ideally written in C.
Resources
---------
The libxs development Git tree can be found on Github at
<http://github.com/crossroads-io/libxs>.
Development is coordinated on the <crossroads-dev@groups.crossroads.io>
mailing list. Vist <http://groups.crossroads.io/> to join or view archives
of previous discussion.
Extensive documentation is provided with the distribution. Refer to
doc/xs.html, or "man xs" after you have installed libxs on your system.
Further resources, language bindings, tutorials, and more can be found on
the Crossroads website at <http://www.crossroads.io/>.
Copying
-------
Free use of this software is granted under the terms of the GNU Lesser General
Public License (LGPL). For details see the files `COPYING` and `COPYING.LESSER`
included with the libxs distribution.
As a special exception, the copyright holders of libxs grant you the right
to link the library statically with your software. Refer to the end of
the `COPYING.LESSER` file included with the libxs distribution for details.
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