zeromq: add recipe for version 4.2.1.

* would need libunwind to be more complete.

net-libs/zeromq/patches/zeromq-4.2.1.patchset

@@ -0,0 +1,36 @@
+From c7fd95dbd48ddffaf5477cd4b831a6cdbb4f9008 Mon Sep 17 00:00:00 2001
+From: Jerome Duval <jerome.duval@gmail.com>
+Date: Tue, 18 Apr 2017 21:52:36 +0200
+Subject: Haiku patch
+
+
+diff --git a/configure.ac b/configure.ac
+index 915d795..61d1426 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -212,6 +212,9 @@ case "${host_os}" in
+         LIBZMQ_CHECK_LANG_FLAG_PREPEND([-Wno-uninitialized])
+         AC_LANG_POP([C++])
+         ;;
++    *haiku*)
++        AC_DEFINE(ZMQ_HAVE_HAIKU, 1, [Have Haiku OS])
++        ;;
+     *netbsd*)
+         # Define on NetBSD to enable all library features
+         CPPFLAGS="-D_NETBSD_SOURCE $CPPFLAGS"
+diff --git a/src/ip.cpp b/src/ip.cpp
+index a2a8582..4242ae5 100644
+--- a/src/ip.cpp
++++ b/src/ip.cpp
+@@ -174,7 +174,7 @@ void zmq::set_ip_type_of_service (fd_t s_, int iptos)
+ #endif
+ 
+     //  Windows does not support IPV6_TCLASS
+-#ifndef ZMQ_HAVE_WINDOWS
++#if !defined(ZMQ_HAVE_WINDOWS) && !defined(ZMQ_HAVE_HAIKU)
+     rc = setsockopt(
+         s_,
+         IPPROTO_IPV6,
+-- 
+2.12.2
+

net-libs/zeromq/zeromq-4.2.1.recipe

@@ -0,0 +1,85 @@
+SUMMARY="A lightweight messaging kernel"
+DESCRIPTION="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."
+HOMEPAGE="http://www.zeromq.org/"
+COPYRIGHT="2007-2014 iMatix Corporation
+2009-2011 250bpm s.r.o.
+2010-2011 Miru Limited
+2011 VMware, Inc.
+2012 Spotify AB
+2013 Ericsson AB
+2014 AppDynamics Inc.
+2015-2016 Brocade Communications Systems Inc.
+"
+LICENSE="GNU LGPL v3"
+REVISION="1"
+SOURCE_URI="https://github.com/zeromq/libzmq/releases/download/v$portVersion/zeromq-$portVersion.tar.gz"
+CHECKSUM_SHA256="27d1e82a099228ee85a7ddb2260f40830212402c605a4a10b5e5498a7e0e9d03"
+SOURCE_URI_2="https://raw.githubusercontent.com/zeromq/cppzmq/1fdf3d1/zmq.hpp#noarchive"
+CHECKSUM_SHA256_2="88d5978e7c7220e71aa7aa255081e7e01502d18d89f2eb9d42b96a43bb642293"
+PATCHES="zeromq-$portVersion.patchset"
+
+ARCHITECTURES="?x86_gcc2 ?x86 x86_64"
+SECONDARY_ARCHITECTURES="?x86_gcc2 ?x86"
+
+PROVIDES="
+	zeromq$secondaryArchSuffix = $portVersion
+	cmd:curve_keygen$secondaryArchSuffix
+	lib:libzmq$secondaryArchSuffix = 5.1.1 compat >= 5
+	"
+REQUIRES="
+	haiku$secondaryArchSuffix
+	"
+
+PROVIDES_devel="
+	zeromq${secondaryArchSuffix}_devel = $portVersion
+	devel:libzmq$secondaryArchSuffix = 5.1.1 compat >= 5
+	"
+REQUIRES_devel="
+	zeromq$secondaryArchSuffix == $portVersion base
+	"
+
+BUILD_REQUIRES="
+	haiku${secondaryArchSuffix}_devel
+	"
+BUILD_PREREQUIRES="
+	cmd:aclocal
+	cmd:autoconf
+	cmd:automake
+	cmd:gcc$secondaryArchSuffix
+	cmd:make
+	cmd:libtoolize$secondaryArchSuffix
+	cmd:pkg_config$secondaryArchSuffix
+	"
+
+BUILD()
+{
+	autoreconf -fi
+	runConfigure ./configure
+	make $jobArgs
+}
+
+INSTALL()
+{
+	make install
+
+	rm $libDir/libzmq.la
+
+	cp $sourceDir2/zmq.hpp $includeDir
+
+	# prepare development lib links
+	prepareInstalledDevelLib libzmq
+	fixPkgconfig
+
+	# devel package
+	packageEntries devel $developDir $manDir
+}
+
+TEST()
+{
+	make check
+}