distro: Add GDB.

* distro/packages/gdb.scm: New file.
* Makefile.am (MODULES): Add it.

Makefile.am

@@ -63,6 +63,7 @@ MODULES =					\
   distro/packages/ed.scm			\
   distro/packages/flex.scm			\
   distro/packages/gawk.scm			\
+  distro/packages/gdb.scm			\
   distro/packages/gdbm.scm			\
   distro/packages/gettext.scm			\
   distro/packages/global.scm			\

distro/packages/gdb.scm

@@ -0,0 +1,63 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2013 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 (distro packages gdb)
+  #:use-module (distro packages ncurses)
+  #:use-module (distro packages readline)
+  #:use-module (distro packages dejagnu)
+  #:use-module (distro packages texinfo)
+  #:use-module (distro packages multiprecision)
+  #:use-module (guix licenses)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu))
+
+(define-public gdb
+  (package
+    (name "gdb")
+    (version "7.5")
+    (source (origin
+             (method url-fetch)
+             (uri (string-append "mirror://gnu/gdb/gdb-"
+                                 version ".tar.bz2"))
+             (sha256
+              (base32
+               "0chrws5ga90b50kp06yll6zy42fhnx9yr87r4i7swsc369fc8y6i"))))
+    (build-system gnu-build-system)
+    (arguments
+     '(#:phases (alist-cons-after
+                 'configure 'post-configure
+                 (lambda _
+                   (patch-makefile-SHELL "gdb/gdbserver/Makefile.in"))
+                 %standard-phases)))
+    (inputs
+     `(;; ("expat" ,expat)
+       ("mpfr" ,mpfr)
+       ("gmp" ,gmp)
+       ("readline" ,readline)
+       ("ncurses" ,ncurses)
+       ;; ("python" ,python)    ; TODO: Add dependency on Python.
+       ("texinfo" ,texinfo)
+       ("dejagnu" ,dejagnu)))
+    (home-page "http://www.gnu.org/software/gdb/")
+    (synopsis "GDB, the GNU Project debugger")
+    (description
+     "GDB, the GNU Project debugger, allows you to see what is going
+on `inside' another program while it executes -- or what another
+program was doing at the moment it crashed.")
+    (license gpl3+)))