Fixes glib

It compiles, but I am not sure this is safe frankly. The problem is that the OS X iconv is bugged and doesn't have a 64 bit symbol for libiconv_open.

Now we must build 64 bit as otherwise everything that links to iconv must be 32 bit too. So we build a static libiconv and link glib to that. This fills in the missing symbol.

However glib still dynamically links to /usr/lib/libiconv.dylib, this is the bit I'm not happy with. It can be fixed but I'm guessing it's ok. At least at this stage of Homebrew.

Formula/glib.rb

@@ -1,5 +1,12 @@
 require 'brewkit'
 
+class Libiconv <Formula
+  @url='http://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.13.1.tar.gz'
+  @homepage='http://www.gnu.org/software/libiconv/'
+  @md5='7ab33ebd26687c744a37264a330bbe9a'
+end
+
+
 class Glib <Formula
   @url='http://ftp.acc.umu.se/pub/gnome/sources/glib/2.20/glib-2.20.5.tar.bz2'
   @md5='4c178b91d82ef80a2da3c26b772569c0'
@@ -11,13 +18,32 @@ class Glib <Formula
   end
 
   def install
+    
+    # Snow Leopard libiconv doesn't have a 64bit version of the libiconv_open
+    # function, which breaks things for us, so we build our own
+    # http://www.mail-archive.com/gtk-list@gnome.org/msg28747.html
+    
+    iconvd = Pathname.getwd+'iconv'
+    iconvd.mkpath
+
+    Libiconv.new.brew do
+      system "./configure", "--prefix=#{iconvd}", "--disable-debug", "--disable-dependency-tracking",
+                            "--enable-static", "--disable-shared"
+      system "make install"
+    end
+
     # indeed, amazingly, -w causes gcc to emit spurious errors for this package!
     ENV.enable_warnings
 
+    # basically we are going to statically link to the symbols that glib doesn't
+    # find in the bugged GNU libiconv that ships with 10.6
+    ENV['LDFLAGS'] += " #{iconvd}/lib/libiconv.a"
+
     system "./configure", "--disable-debug",
                           "--prefix=#{prefix}",
                           "--disable-dependency-tracking",
-                          "--disable-rebuilds"
+                          "--disable-rebuilds",
+                          "--with-libiconv=gnu"
     system "make"
     system "make install"