* On Darwin, don't link Perl against /usr/lib/libutil.dylib. Libutil

uses /usr/lib/libstdc++.dylib, and so we get segfaults when using
  Perl modules that depend on another libstdc++.dylib (like Nix's Perl
  bindings).  It doesn't appear that libutil provides useful
  functionality for Perl on Darwin.

svn path=/nixpkgs/branches/stdenv-updates/; revision=32364

pkgs/development/interpreters/perl/5.14/default.nix

@@ -17,7 +17,8 @@ stdenv.mkDerivation rec {
   patches = 
     [ # Do not look in /usr etc. for dependencies.
       ./no-sys-dirs.patch
-    ];
+    ] 
+    ++ stdenv.lib.optional stdenv.isDarwin ./no-libutil.patch;
 
   # Build a thread-safe Perl with a dynamic libperls.o.  We need the
   # "installstyle" option to ensure that modules are put under

pkgs/development/interpreters/perl/5.14/no-libutil.patch

@@ -0,0 +1,12 @@
+diff -ru -x '*~' perl-5.14.2-orig/Configure perl-5.14.2/Configure
+--- perl-5.14.2-orig/Configure	2011-09-26 11:44:34.000000000 +0200
++++ perl-5.14.2/Configure	2012-02-16 17:24:50.779839039 +0100
+@@ -1368,7 +1368,7 @@
+ : List of libraries we want.
+ : If anyone needs extra -lxxx, put those in a hint file.
+ libswanted="sfio socket bind inet nsl nm ndbm gdbm dbm db malloc dl dld ld sun"
+-libswanted="$libswanted m crypt sec util c cposix posix ucb bsd BSD"
++libswanted="$libswanted m crypt sec c cposix posix ucb bsd BSD"
+ : We probably want to search /usr/shlib before most other libraries.
+ : This is only used by the lib/ExtUtils/MakeMaker.pm routine extliblist.
+ glibpth=`echo " $glibpth " | sed -e 's! /usr/shlib ! !'`