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From: Jan Nieuwenhuizen <janneke@gnu.org>
To: guix-devel@gnu.org
Subject: [PATCH 04/12] gnu: Add function libiconv-if-needed.
Date: Thu, 18 Aug 2016 08:08:43 +0200	[thread overview]
Message-ID: <20160818060851.2853-5-janneke@gnu.org> (raw)
In-Reply-To: <20160818060851.2853-1-janneke@gnu.org>

* gnu/packages/base.scm (libiconv-if-needed): New function.
---
 gnu/packages/base.scm | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/base.scm b/gnu/packages/base.scm
index a476837..fe11a87 100644
--- a/gnu/packages/base.scm
+++ b/gnu/packages/base.scm
@@ -46,7 +46,8 @@
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system trivial)
   #:use-module (ice-9 match)
-  #:export (glibc))
+  #:export (glibc
+            libiconv-if-needed))
 
 ;;; Commentary:
 ;;;
@@ -997,6 +998,16 @@ 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)))
+  "Return either a libiconv package specification to include in a dependency
+list for platforms that have an incomplete libc, or the empty list.  If a
+package needs iconv ,@(libiconv-if-needed) should be added."
+  ;; POSIX C libraries provide iconv.  Platforms with an incomplete libc
+  ;; without iconv, such as MinGW, must return the then clause.
+  (if (target-mingw? target)
+      `(("libiconv" ,libiconv))
+      '()))
+
 (define-public (canonical-package package)
   ;; Avoid circular dependency by lazily resolving 'commencement'.
   (let* ((iface (resolve-interface '(gnu packages commencement)))
-- 
2.9.2

  parent reply	other threads:[~2016-08-18  6:09 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-18  6:08 MinGW guile.exe cross build patch series v10 Jan Nieuwenhuizen
2016-08-18  6:08 ` [PATCH 01/12] gnu: Add gcc-cross-x86_64 packages for testing Jan Nieuwenhuizen
2016-08-18  6:08 ` [PATCH 02/12] gnu: Add mingw-w64 Jan Nieuwenhuizen
2016-08-18  7:42   ` Alex Kost
2016-08-18  9:48     ` Jan Nieuwenhuizen
2016-08-18  6:08 ` [PATCH 03/12] gnu: cross-build: i686-w64-mingw32: new cross target Jan Nieuwenhuizen
2016-08-18  6:08 ` Jan Nieuwenhuizen [this message]
2016-08-18  6:08 ` [PATCH 05/12] gnu: libunistring: support mingw: propagate libiconv if needed Jan Nieuwenhuizen
2016-08-18  6:08 ` [PATCH 06/12] gnu: gmp: build shared library for mingw Jan Nieuwenhuizen
2016-08-18  6:08 ` [PATCH 07/12] gnu: ncurses: support mingw Jan Nieuwenhuizen
2016-08-18  6:08 ` [PATCH 08/12] gnu: cross-base: Add cross-libtool Jan Nieuwenhuizen
2016-08-18  6:08 ` [PATCH 09/12] gnu: libtool: support cross-libtool mingw Jan Nieuwenhuizen
2016-08-18  6:08 ` [PATCH 10/12] gnu: ncurses: build mingw with libtool Jan Nieuwenhuizen
2016-12-07  9:36   ` MinGW cross-compilation support Ludovic Courtès
2016-12-07 10:53     ` Manolis Ragkousis
2016-12-07 21:34       ` Ludovic Courtès
2016-12-07 11:17     ` Chris Marusich
2016-12-07 14:09     ` Jan Nieuwenhuizen
2016-12-07 21:39       ` Ludovic Courtès
2016-08-18  6:08 ` [PATCH 11/12] gnu: readline: support mingw Jan Nieuwenhuizen
2016-08-18  6:08 ` [PATCH 12/12] gnu: guile-2.0: " Jan Nieuwenhuizen

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