ZeroMQ

Welcome

The ZeroMQ lightweight messaging kernel is a library which extends the standard socket interfaces with features traditionally provided by specialised messaging middleware products. ZeroMQ sockets provide an abstraction of asynchronous message queues, multiple messaging patterns, message filtering (subscriptions), seamless access to multiple transport protocols and more.

Supported platforms

Libzmq is mainly written in C++98 with some optional C++11-fragments. For configuration either autotools or CMake is employed. See below for some lists of platforms, where libzmq has been successfully compiled on.

Supported platforms with primary CI

OS and version	Architecture	Compiler and version	Build system	Remarks
Android NDK r20	arm, arm64, x86, x86_64	llvm (see NDK)	autotools	DRAFT
Ubuntu 14.04.5 LTS (trusty)	amd64	clang 5.0.0	autotools	STABLE, extras: GSSAPI, PGM, NORM, C++98 mode only
Ubuntu 14.04.5 LTS (trusty)	amd64	gcc 4.8.4	autotools	STABLE, DRAFT, extras: GSSAPI, PGM, NORM, TIPC, IPV6, also POLLER=poll, POLLER=select, also valgrind and address sanitizer executions
Ubuntu 14.04.5 LTS (trusty)	amd64	gcc 4.8.4	CMake 3.12.2	STABLE
Windows Server 2012 R2	x86	Visual Studio 2008	CMake 3.12.2	DRAFT
Windows Server 2012 R2	x86	Visual Studio 2010 SP1	CMake 3.12.2	DRAFT
Windows Server 2012 R2	x86	Visual Studio 2012 Update 5	CMake 3.12.2	DRAFT
Windows Server 2012 R2	x86, amd64	Visual Studio 2013 Update 5	CMake 3.12.2	DRAFT, STABLE (x86 Release only), also POLLER=epoll
Windows Server 2012 R2	x86	Visual Studio 2015 Update 3	CMake 3.12.2	DRAFT
Windows Server 2016	x86	Visual Studio 2017 15.9.6	CMake 3.13.3	DRAFT
cygwin 3.0.0 on Windows Server 2012 R2	amd64	gcc 7.4.0	CMake 3.6.2	DRAFT
MSYS2 ? on Windows Server 2012 R2	amd64	gcc 6.4.0	CMake ?	DRAFT
Mac OS X 10.13	amd64	Xcode 9.4.1, Apple LLVM 9.1.0	autotools	STABLE, DRAFT
Mac OS X 10.13	amd64	Xcode 9.4.1, Apple LLVM 9.1.0	CMake 3.11.4	DRAFT

Note: the platforms are regularly updated by the service providers, so this information might get out of date without any changes on the side of libzmq. For Appveyor, refer to https://www.appveyor.com/updates/ regarding platform updates. For travis-ci, refer to https://changelog.travis-ci.com/ regarding platform updates.

Supported platforms with secondary CI

OS and version	Architecture	Compiler and version	Build system	Remarks
CentOS 6	x86, amd64	?	autotools
CentOS 7	amd64	?	autotools
Debian 8.0	x86, amd64	?	autotools
Debian 9.0	ARM64, x86, amd64	?	autotools
Fedora 28	ARM64, ARM32, amd64	?	autotools
Fedora 29	ARM64, ARM32, amd64	?	autotools
Fedora Rawhide	ARM64, ARM32, amd64	?	autotools
RedHat Enterprise Linux 7	amd64, ppc64	?	autotools
SuSE Linux Enterprise 12 SP4	ARM64, amd64, ppc64, s390x	?	autotools
SuSE Linux Enterprise 15	amd64	?	autotools
xUbuntu 12.04	x86, amd64	?	autotools
xUbuntu 14.04	x86, amd64	?	autotools
xUbuntu 16.04	x86, amd64	?	autotools
xUbuntu 18.04	x86, amd64	?	autotools
xUbuntu 18.10	x86, amd64	?	autotools

Supported platforms with known active users

At the time of writing, no explicit reports have been available. Please report your experiences by opening a PR adding an entry or moving an entry from the section below.

Under "last report", please name either the SHA1 in case of an unreleased version, or the version number in case of a released version.

OS and version	Architecture	Compiler and version	Build system	Last report	Remarks
Solaris 10	x86, amd64, sparc	GCC 8.1.0	CMake	2019/03/18
DragonFly BSD	amd64	gcc 8.3	autotools	2018/08/07 git-72854e63
IBM i	ppc64	gcc 6.3	autotools	2019/10/02 git-25320a3
QNX 7.0	x86_64	gcc 5.4.0	CMake	4.3.2

Supported platforms without known active users

Note: this list is incomplete and inaccurate and still needs some work.

OS and version	Architecture	Compiler and version	Build system	Remarks
Any Linux distribution	x86, amd64	gcc ?+, clang ?+, icc ?+	autotools, CMake
SunOS, Solaris	x86, amd64	SunPro	autotools, CMake
GNU/kFreeBSD	?	?	autotools, CMake
FreeBSD	?	?	autotools, CMake
NetBSD	?	?	autotools, CMake
OpenBSD	?	?	autotools, CMake
DragonFly BSD	amd64	gcc 8.3	autotools, CMake
HP-UX	?	?	autotools, CMake
GNU/Hurd	?	?	autotools
VxWorks 6.8	?	?	?
Windows CE	?	?	?
Windows UWP	?	?	?
OpenVMS	?	?	?

Unsupported platforms

OS and version	Architecture	Compiler and version	Remarks
QNX 6.3	?	gcc 3.3.5	see #3371, support was added by a user, but not contributed to upstream
Windows 10	ARM, ARM64	Visual Studio 2017	see #3366, probably only minor issues

For more details, see here.

For some platforms (Linux, Mac OS X), prebuilt binary packages are supplied by the ZeroMQ organization. For other platforms, you need to build your own binaries.

Installation of binary packages

Linux

For Linux users, pre-built binary packages are available for most distributions. Note that DRAFT APIs can change at any time without warning, pick a STABLE build to avoid having them enabled.

Latest releases

DEB

RPM

Bleeding edge packages

DEB

RPM

Example: Debian 9 latest release, no DRAFT apis

echo "deb http://download.opensuse.org/repositories/network:/messaging:/zeromq:/release-stable/Debian_9.0/ ./" >> /etc/apt/sources.list
wget https://download.opensuse.org/repositories/network:/messaging:/zeromq:/release-stable/Debian_9.0/Release.key -O- | sudo apt-key add
apt-get install libzmq3-dev

OSX

For OSX users, packages are available via brew.

brew install zeromq

Build from sources

To build from sources, see the INSTALL file included with the distribution.

Android

To build from source, see README file in the android build directory.

Resources

Extensive documentation is provided with the distribution. Refer to doc/zmq.html, or "man zmq" after you have installed libzmq on your system.

Website: http://www.zeromq.org/

Development mailing list: zeromq-dev@lists.zeromq.org Announcements mailing list: zeromq-announce@lists.zeromq.org

Git repository: http://github.com/zeromq/libzmq

ZeroMQ developers can also be found on the IRC channel #zeromq, on the Freenode network (irc.freenode.net).

License

The project license is specified in COPYING and COPYING.LESSER.

libzmq is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License (LGPL) as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

As a special exception, the Contributors give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you must extend this exception to your version of the library.

libzmq is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

Contributing

This project uses C4(Collective Code Construction Contract) process for contributions.