From 0cd87229b3bc27631f85c435afaa019dfb1bd36d Mon Sep 17 00:00:00 2001
From: Adam Vandenberg <flangy@gmail.com>
Date: Sat, 7 Jul 2012 11:07:50 -0700
Subject: [PATCH] All symbols for autotools dependencies

The symbol versions of :autoconf, :automake and :libtool only activate
for OS X / Xcode combinations that do not provide autotools.
---
 Library/Homebrew/dependencies.rb | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Library/Homebrew/dependencies.rb b/Library/Homebrew/dependencies.rb
index adcd4f4ede..053de0b9ca 100644
--- a/Library/Homebrew/dependencies.rb
+++ b/Library/Homebrew/dependencies.rb
@@ -59,6 +59,9 @@ private
 
   def parse_symbol_spec spec, tag
     case spec
+    when :autoconf, :automake, :libtool
+      # Xcode no longer comes with autotools
+      MacOS.xcode_version >= "4.3" ? Dependency.new(spec.to_s) : nil
     when :x11, :libpng
       X11Dependency.new(tag)
     else