Add :ld64 dependency

This allows formulae which won't build with Tiger's ld to conditionally
request a dependency on the ld64 formula. This modifies the build
environment appropriately, and will only be active on Tiger.

1 files changed, 7 insertions, 0 deletions

diff --git a/Library/Homebrew/extend/ENV.rb b/Library/Homebrew/extend/ENV.rb
index 35f14bf0d..db17f2255 100644
--- a/Library/Homebrew/extend/ENV.rb
+++ b/Library/Homebrew/extend/ENV.rb
@@ -375,6 +375,13 @@ module HomebrewEnvExtension
       Hardware.processor_count
     end
   end
+
+  # ld64 is a newer linker provided for Xcode 2.5
+  def ld64
+    ld64 = Formula.factory('ld64')
+    self['LD'] = ld64.bin/'ld'
+    append "LDFLAGS", "-B#{ld64.bin.to_s+"/"}"
+  end
 end
 
 class << ENV