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authorJan Nieuwenhuizen <janneke@gnu.org>2016-05-03 18:49:33 +0200
committerLudovic Courtès <ludo@gnu.org>2016-12-07 10:23:16 +0100
commit4dab8c590650af0e78647e6e13fb9ac772e51db7 (patch)
tree1531db92cab4e4c17b6d14440b79607cedafeac8
parentcba36e6482a39d9b7e3a61fb2251664a86cb492e (diff)
gnu: Add function libiconv-if-needed.
* gnu/packages/base.scm (libiconv-if-needed): New function.
-rw-r--r--gnu/packages/base.scm13
1 files changed, 12 insertions, 1 deletions
diff --git a/gnu/packages/base.scm b/gnu/packages/base.scm
index 1c01874bb0..8b8134c822 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:
;;;
@@ -1032,6 +1033,16 @@ 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)))