gnu: Add doxygen.

* gnu/packages/doxygen.scm: New file.
* gnu/packages/patches/doxygen-test.patch,
  gnu/packages/patches/doxygen-tmake.patch: New files.
* gnu-system.am (GNU_SYSTEM_MODULES, dist_patch_DATA): Register the new files.

gnu/packages/doxygen.scm

@@ -0,0 +1,75 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2014 Andreas Enge <andreas@enge.fr>
+;;;
+;;; 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 doxygen)
+  #:use-module ((guix licenses) #:select (gpl3+))
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages bison)
+  #:use-module (gnu packages flex)
+  #:use-module (gnu packages perl)
+  #:use-module (gnu packages xml)
+  #:use-module (gnu packages python))
+
+(define-public doxygen
+  (package
+    (name "doxygen")
+    (version "1.8.7")
+    (source (origin
+             (method url-fetch)
+             (uri (string-append "http://ftp.stack.nl/pub/users/dimitri/"
+                                 name "-" version ".src.tar.gz"))
+             (sha256
+              (base32
+               "1ng3dv5fninhfi2fj75ghkr5jwsl653fxv2sxhaswj11x2vcdsn6"))
+             (patches (list (search-patch "doxygen-tmake.patch")
+                            (search-patch "doxygen-test.patch")))))
+    (build-system gnu-build-system)
+    ;; The presence of graphviz is checked, but it does not seem to influence
+    ;; the output: Even after adding it as an input, no reference to it is
+    ;; retained. It might be an option to add it as a propagated input,
+    ;; only so that it becomes installed in the user profile.
+    (native-inputs
+     `(("bison" ,bison)
+       ("flex" ,flex)
+       ("libxml2" ,libxml2) ; provides xmllint for the tests
+       ("perl" ,perl) ; for the tests
+       ("python" ,python-2))) ; for creating the documentation
+    (arguments
+     `(#:test-target "test"
+       #:phases
+         (alist-replace
+          'configure
+          (lambda* (#:key outputs #:allow-other-keys)
+            (let ((out (assoc-ref outputs "out")))
+              ;; do not pass "--enable-fast-install", which makes the
+              ;; configure process fail
+              (zero? (system*
+                      "./configure"
+                      "--prefix" out))))
+          %standard-phases)))
+    (home-page "http://www.stack.nl/~dimitri/doxygen/")
+    (synopsis "tool for generating documentation from annotated sources")
+    (description "Doxygen is the de facto standard tool for generating
+documentation from annotated C++ sources, but it also supports other popular
+programming languages such as C, Objective-C, C#, PHP, Java, Python,
+IDL (Corba, Microsoft, and UNO/OpenOffice flavors), Fortran, VHDL, Tcl,
+and to some extent D.")
+    (license gpl3+)))