Index: head/devel/Makefile
===================================================================
--- head/devel/Makefile
+++ head/devel/Makefile
@@ -1554,6 +1554,7 @@
     SUBDIR += libtool
     SUBDIR += libtpl
     SUBDIR += libtrue
+    SUBDIR += libtsm
     SUBDIR += libtuntap
     SUBDIR += libublio
     SUBDIR += libudev-devd
Index: head/devel/libtsm/Makefile
===================================================================
--- head/devel/libtsm/Makefile
+++ head/devel/libtsm/Makefile
@@ -0,0 +1,27 @@
+# $FreeBSD$
+
+PORTNAME=	libtsm
+DISTVERSION=	3
+CATEGORIES=	devel
+MASTER_SITES=	http://freedesktop.org/software/kmscon/releases/
+
+MAINTAINER=	angus@agibson.me
+COMMENT=	Terminal-emulator state machine
+
+LICENSE=	MIT
+LICENSE_FILE=	${WRKSRC}/COPYING
+
+USES=		gmake libtool tar:xz
+GNU_CONFIGURE=	yes
+USE_LDCONFIG=	yes
+CONFIGURE_ARGS=	--disable-debug --disable-static
+CONFIGURE_ENV=	PKG_CONFIG=/dev/null # disable tests
+INSTALL_TARGET=	install-strip
+
+PLIST_FILES=	include/libtsm.h \
+		lib/libtsm.so \
+		lib/libtsm.so.3 \
+		lib/libtsm.so.3.0.0 \
+		libdata/pkgconfig/libtsm.pc
+
+.include <bsd.port.mk>
Index: head/devel/libtsm/distinfo
===================================================================
--- head/devel/libtsm/distinfo
+++ head/devel/libtsm/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1497389678
+SHA256 (libtsm-3.tar.xz) = 114115d84a2bc1802683871ea2d70a16ddeec8d2f8cde89ebd2046d775e6cf07
+SIZE (libtsm-3.tar.xz) = 293264
Index: head/devel/libtsm/pkg-descr
===================================================================
--- head/devel/libtsm/pkg-descr
+++ head/devel/libtsm/pkg-descr
@@ -0,0 +1,18 @@
+TSM is a state machine for DEC VT100-VT520 compatible terminal emulators. It
+tries to support all common standards while keeping compatibility to existing
+emulators like xterm, gnome-terminal, konsole, etc.
+
+TSM itself does not provide any rendering nor window management. It is a simple
+plain state machine without any external dependencies. It can be used to
+implement terminal emulators, but also to implement other applications that
+need to interpret terminal escape sequences.
+
+This library is very similar to libvte of the gnome project. However, libvte is
+highly bound to GTK+, which makes it unsuitable for non-graphics projects that
+need to parse escape sequences. Instead, TSM tries to restrict its API to
+terminal emulation only. Furthermore, TSM does not try to establish a new
+terminal emulation standard, but instead keeps compatibility as close to xterm
+as possible. This is why the TERM variable can be set to xterm-color256 with
+any TSM based terminal emulator.
+
+WWW: https://www.freedesktop.org/wiki/Software/kmscon/libtsm/