distro: Add icu4c (International Components for Unicode).

* distro/packages/icu4c.scm: New file.
* Makefile.am (MODULES): Add it.

Makefile.am

@@ -75,6 +75,7 @@ MODULES =					\
   distro/packages/gsasl.scm			\
   distro/packages/guile.scm			\
   distro/packages/help2man.scm			\
+  distro/packages/icu4c.scm			\
   distro/packages/idutils.scm			\
   distro/packages/ld-wrapper.scm		\
   distro/packages/less.scm			\

distro/packages/icu4c.scm

@@ -0,0 +1,66 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2013 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 (distro packages icu4c)
+  #:use-module (distro)
+  #:use-module (distro packages perl)
+  #:use-module (guix licenses)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu))
+
+(define-public icu4c
+  (package
+   (name "icu4c")
+   (version "50.1.1")
+   (source (origin
+            (method url-fetch)
+            (uri (string-append "http://download.icu-project.org/files/icu4c/"
+                   version
+                   "/icu4c-"
+                   (string-map (lambda (x) (if (char=? x #\.) #\_ x)) version)
+                   "-src.tgz"))
+            (sha256 (base32
+                     "13yz0kk6zsgj94idnlr3vbg8iph5z4ly4b4xrd5wfja7q3ijdx56"))))
+   (build-system gnu-build-system)
+   (inputs `(("perl" ,perl)))
+   (arguments
+    `(#:phases
+      (alist-replace
+       'unpack
+       (lambda* (#:key source #:allow-other-keys)
+        (and (zero? (system* "tar" "xvf" source))
+             (chdir "icu/source")))
+       (alist-replace
+        'configure
+        (lambda* (#:key #:allow-other-keys #:rest args)
+         (let ((configure (assoc-ref %standard-phases 'configure)))
+           ;; patch out two occurrences of /bin/sh from configure script
+           ;; that might have disappeared in a release later than 50.1.1
+           (substitute* "configure"
+             (("`/bin/sh")
+             (string-append "`" (which "bash"))))
+           (apply configure args)))
+       %standard-phases))))
+   (synopsis "ICU, International Components for Unicode")
+   (description
+    "ICU is a set of C/C++ and Java libraries providing Unicode and
+globalisation support for software applications. This package contains the
+C/C++ part.")
+   (license x11)
+   (home-page "http://site.icu-project.org/")))