[PATCH 06/10] gnu: Add libiconv.

[Jan Nieuwenhuizen <janneke@gnu.org>]

* gnu/packages/base.scm (libiconv): New variable.
(libiconv-if-needed): New function.
---
 gnu/packages/base.scm | 33 +++++++++++++++++++++++++++++++--
 1 file changed, 31 insertions(+), 2 deletions(-)

diff --git a/gnu/packages/base.scm b/gnu/packages/base.scm
index 1c4ebbf..8137918 100644
--- a/gnu/packages/base.scm
+++ b/gnu/packages/base.scm
@@ -6,6 +6,7 @@
 ;;; Copyright © 2014 Alex Kost <alezost@gmail.com>
 ;;; Copyright © 2014, 2015 Manolis Fragkiskos Ragkousis <manolis837@gmail.com>
 ;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -24,7 +25,7 @@
 
 (define-module (gnu packages base)
   #:use-module ((guix licenses)
-                #:select (gpl3+ lgpl2.0+ public-domain))
+                #:select (gpl3+ lgpl2.0+ lgpl3+ public-domain))
   #:use-module (gnu packages)
   #:use-module (gnu packages acl)
   #:use-module (gnu packages bash)
@@ -43,7 +44,9 @@
   #:use-module (guix download)
   #:use-module (guix git-download)
   #:use-module (guix build-system gnu)
-  #:use-module (guix build-system trivial))
+  #:use-module (guix build-system trivial)
+  #:export (glibc
+            libiconv-if-needed))
 
 ;;; Commentary:
 ;;;
@@ -936,6 +939,32 @@ reflect changes made by political bodies to time zone boundaries, UTC offsets,
 and daylight-saving rules.")
     (license public-domain)))
 
+(define-public libiconv
+  (package
+   (name "libiconv")
+   (version "1.14")
+   (source (origin
+            (method url-fetch)
+            (uri (string-append
+                  "mirror://gnu/libiconv/libiconv-"
+                  version ".tar.gz"))
+            (sha256
+             (base32
+              "04q6lgl3kglmmhw59igq1n7v3rp1rpkypl366cy1k1yn2znlvckj"))))
+   (build-system gnu-build-system)
+   (synopsis "Character set conversion library")
+   (description
+     "libiconv provides an implementation of the iconv function for systems
+that lack it.  iconv is used to convert between character encodings in a
+program.  It supports a wide variety of different encodings.")
+   (home-page "http://www.gnu.org/software/libiconv/")
+   (license lgpl3+)))
+
+(define* (libiconv-if-needed #:optional (target (%current-target-system)))
+  (if (mingw-target? target)
+      `(("libiconv" ,libiconv))
+      '()))
+
 (define-public (canonical-package package)
   ;; Avoid circular dependency by lazily resolving 'commencement'.
   (let* ((iface (resolve-interface '(gnu packages commencement)))
-- 
2.7.3