gnu: Add libffcall.

* gnu/packages/libffcall.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

Co-Authored-By: Joshua S. Grant <jgrant@parenthetical.io>

gnu-system.am

@@ -157,6 +157,7 @@ GNU_SYSTEM_MODULES =				\
   gnu/packages/libcanberra.scm			\
   gnu/packages/libdaemon.scm			\
   gnu/packages/libevent.scm			\
+  gnu/packages/libffcall.scm			\
   gnu/packages/libffi.scm			\
   gnu/packages/libftdi.scm			\
   gnu/packages/libidn.scm			\

gnu/packages/libffcall.scm

@@ -0,0 +1,49 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2015 Joshua S. Grant <jgrant@parenthetical.io>
+;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix 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 General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages libffcall)
+  #:use-module ((guix licenses) #:prefix l:)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix cvs-download)
+  #:use-module (guix build-system gnu))
+
+(define-public libffcall
+   (package
+    (name "libffcall")
+    (version "1.10+cvs-2015-01-15")
+    (source
+     (origin
+       (method cvs-fetch)
+       (uri (cvs-reference
+             (root-directory
+              ":pserver:anonymous@cvs.savannah.gnu.org:/sources/libffcall")
+             (module "ffcall")
+             (revision "2015-01-15")))
+       (sha256
+        (base32
+         "1lwdskc2w4rr98x9flr2726lmj4190l16r0izg7gqxy50801wwgd"))))
+    (build-system gnu-build-system)
+    (arguments `(#:parallel-build? #f))
+    (synopsis "Foreign function call libraries")
+    (description
+     "GNU Libffcall is a collection of libraries that can be used to build
+foreign function call interfaces in embedded interpreters.")
+    (home-page "http://www.gnu.org/software/libffcall/")
+    (license l:gpl2)))