Index: head/comms/Makefile
===================================================================
--- head/comms/Makefile
+++ head/comms/Makefile
@@ -154,6 +154,7 @@
     SUBDIR += rtl-sdr
     SUBDIR += rubygem-callsign
     SUBDIR += rubygem-ruby-termios
+    SUBDIR += rubygem-serialport
     SUBDIR += rxtx
     SUBDIR += scmxx
     SUBDIR += sdr-wspr
Index: head/comms/rubygem-serialport/Makefile
===================================================================
--- head/comms/rubygem-serialport/Makefile
+++ head/comms/rubygem-serialport/Makefile
@@ -0,0 +1,16 @@
+# $FreeBSD$
+
+PORTNAME=	serialport
+PORTVERSION=	1.3.1
+CATEGORIES=	comms rubygems
+MASTER_SITES=	RG
+
+MAINTAINER=	tj+freebsd_ports@a13.fr
+COMMENT=	Library for using RS-232 serial ports
+
+LICENSE=	GPLv2
+
+USE_RUBY=	yes
+USES=		gem
+
+.include <bsd.port.mk>
Index: head/comms/rubygem-serialport/distinfo
===================================================================
--- head/comms/rubygem-serialport/distinfo
+++ head/comms/rubygem-serialport/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1485022418
+SHA256 (rubygem/serialport-1.3.1.gem) = 59293f68d8d6fe8e54726a238f46143f0e5541d4232cc211f10cb627c8219747
+SIZE (rubygem/serialport-1.3.1.gem) = 25088
Index: head/comms/rubygem-serialport/pkg-descr
===================================================================
--- head/comms/rubygem-serialport/pkg-descr
+++ head/comms/rubygem-serialport/pkg-descr
@@ -0,0 +1,4 @@
+Ruby-SerialPort is a Ruby library that provides a class for using
+RS-232 serial ports.
+
+WWW: https://rubygems.org/gems/serialport