gnu: Add GPSBabel.

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

gnu-system.am

@@ -115,6 +115,7 @@ GNU_SYSTEM_MODULES =				\
   gnu/packages/gnu-pw-mgr.scm			\
   gnu/packages/gperf.scm			\
   gnu/packages/gprolog.scm			\
+  gnu/packages/gps.scm				\
   gnu/packages/graphviz.scm			\
   gnu/packages/groff.scm			\
   gnu/packages/grub.scm				\

gnu/packages/gps.scm

@@ -0,0 +1,67 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2014 Ludovic Courtès <ludo@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 gps)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (gnu packages which)
+  #:use-module (gnu packages compression)
+  #:use-module (gnu packages xml)
+  #:use-module (gnu packages qt))
+
+(define-public gpsbabel
+  (package
+    (name "gpsbabel")
+    (version "1.5.0")
+    (source (origin
+              (method url-fetch)
+              ;; XXX: Downloads from gpsbabel.org are hidden behind a POST, so
+              ;; get it from elsewhere.
+              (uri (string-append
+                    "mirror://debian/pool/main/g/gpsbabel/gpsbabel_"
+                    version ".orig.tar.gz"))
+              (sha256
+               (base32
+                "1pd01kra9l5ihy1by87qia0mpbpcif7g5yg7r9z2bnw7711jm3yb"))))
+    (build-system gnu-build-system)
+    (arguments
+     '(#:configure-flags '("--with-zlib=system")
+       #:phases (alist-cons-before
+                 'configure 'pre-configure
+                 (lambda _
+                   (chdir "gpsbabel"))
+                 ;; TODO: "make doc" requires Docbook & co.
+                 %standard-phases)))
+    (inputs
+     `(("expat" ,expat)
+       ("zlib" ,zlib)
+       ("qt4" ,qt-4)))
+    (native-inputs
+     `(("which" ,which)
+       ("libxml2" ,libxml2)))              ;'xmllint' needed for the KML tests
+    (home-page "http://www.gpsbabel.org/")
+    (synopsis "Convert and exchange data with GPS and map programs")
+    (description
+     "GPSBabel converts waypoints, tracks, and routes between hundreds of
+popular GPS receivers and mapping programs.  It contains extensive data
+manipulation abilities making it a convenient for server-side processing or as
+the back-end for other tools.  It does not convert, transfer, send, or
+manipulate maps.")
+    (license license:gpl2+)))