dbus - not extensively tested at all but seems to work. Does not

auto-start or is in any way integrated to the OS.

sys-apps/dbus/dbus-1.6.8.bep

@@ -0,0 +1,29 @@
+DESCRIPTION="dbus message bus system" 
+HOMEPAGE="http://www.freedesktop.org/wiki/Software/dbus"
+SRC_URI="http://dbus.freedesktop.org/releases/dbus/dbus-1.6.8.tar.gz"
+CHECKSUM_MD5="3bf059c7dd5eda5f539a1b7cfe7a14a2"
+REVISION="1"
+STATUS_HAIKU="untested"
+DEPEND=""
+MESSAGE="This port only builds with gcc4. Use 'setgcc gcc4' before building."
+
+BUILD {
+	cd dbus-1.6.8
+	./configure --prefix="$(finddir B_COMMON_DIRECTORY)" \
+	--datarootdir="$(finddir B_COMMON_DATA_DIRECTORY)" \
+	--mandir="$(finddir B_COMMON_DOCUMENTATION_DIRECTORY)/man" 
+	make
+}
+
+INSTALL {
+	cd dbus-1.6.8
+	make install
+}
+
+TEST {
+	cd dbus-1.6.8
+	make check
+}
+
+LICENSE="GNU GPL v2"
+

sys-apps/dbus/patches/dbus-1.6.8.patch

@@ -0,0 +1,11 @@
+--- dbus-1.6.8/dbus/sd-daemon.c	2011-07-13 20:42:21.040108032 +0000
++++ dbus-1.6.8-haiku/dbus/sd-daemon.c	2013-02-12 18:57:28.067108864 +0000
+@@ -32,7 +32,7 @@
+ #include <sys/stat.h>
+ #include <sys/socket.h>
+ #include <sys/un.h>
+-#include <sys/fcntl.h>
++#include <fcntl.h>
+ #include <netinet/in.h>
+ #include <stdlib.h>
+ #include <errno.h>