gnu: Add mitlm.

* gnu/packages/speech.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

gnu/local.mk

@@ -311,6 +311,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/slang.scm			\
   %D%/packages/slim.scm				\
   %D%/packages/smalltalk.scm			\
+  %D%/packages/speech.scm			\
   %D%/packages/ssh.scm				\
   %D%/packages/stalonetray.scm			\
   %D%/packages/statistics.scm			\

gnu/packages/speech.scm

@@ -0,0 +1,51 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2016 David Thompson <davet@gnu.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 speech)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages gcc))
+
+(define-public mitlm
+  (package
+    (name "mitlm")
+    (version "0.4.1")
+    ;; No official release tarballs, so for now we use the one from Debian
+    ;; that is maintained by one of the project developers.
+    ;;
+    ;; See: https://github.com/mitlm/mitlm/issues/54
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "mirror://debian/pool/main/m/mitlm/mitlm_"
+                                  version ".orig.tar.gz"))
+              (sha256
+               (base32
+                "12m09xxx8jbir9cnzzaysvni5sfijpfj96z1x1520qqvmpc8lmn7"))))
+    (build-system gnu-build-system)
+    (native-inputs
+     `(("gfortran" ,gfortran)))
+    (synopsis "The MIT Language Modeling toolkit")
+    (description "The MIT Language Modeling (MITLM) toolkit is a set of
+tools designed for the efficient estimation of statistical n-gram language
+models involving iterative parameter estimation.  It achieves much of its
+efficiency through the use of a compact vector representation of n-grams.")
+    (home-page "https://github.com/mitlm/mitlm")
+    (license license:expat)))